diff --git a/pcbs/analog_board_v0.22/analog_board_v0.22-cache.lib b/pcbs/analog_board_v0.22/analog_board_v0.22-cache.lib
index 5f572c2..fd92092 100644
--- a/pcbs/analog_board_v0.22/analog_board_v0.22-cache.lib
+++ b/pcbs/analog_board_v0.22/analog_board_v0.22-cache.lib
@@ -32,38 +32,6 @@ X +5V 1 0 0 0 U 50 50 1 1 W N
 ENDDRAW
 ENDDEF
 #
-# AD8616
-#
-DEF AD8616 U 0 10 Y Y 1 F N
-F0 "U" -621 -296 50 H V L CNN
-F1 "AD8616" 300 -300 50 H V L CNN
-F2 "" -197 50 50 H V C CNN
-F3 "" -297 150 50 H V C CNN
-DRAW
-T 0 -436 -92 60 0 0 0 + Normal 0 C C
-T 0 436 -92 60 0 0 0 + Normal 0 C C
-T 0 -444 104 60 0 0 0 - Normal 0 C C
-T 0 444 104 60 0 0 0 - Normal 0 C C
-P 2 0 0 0 -700 -100 -500 -100 N
-P 2 0 0 0 -700 100 -500 100 N
-P 2 0 0 0 500 100 650 100 N
-P 2 0 0 0 650 -100 500 -100 N
-P 4 0 0 0 -100 0 -50 0 -50 300 -700 300 N
-P 4 0 0 0 100 0 50 0 50 300 650 300 N
-S -700 400 650 -400 0 1 0 N
-P 4 0 1 10 -500 -200 -100 0 -500 200 -500 -200 f
-P 4 0 1 10 500 -200 100 0 500 200 500 -200 f
-X V- 4 0 -550 150 U 50 50 0 1 W
-X V+ 8 0 550 150 D 50 50 0 1 W
-X ~ 1 -800 300 100 R 50 50 1 1 O
-X ~ 2 -800 100 100 R 50 50 1 1 I
-X ~ 3 -800 -100 100 R 50 50 1 1 I
-X ~ 5 750 -100 100 L 50 50 1 1 I
-X ~ 6 750 100 100 L 50 50 1 1 I
-X ~ 7 750 300 100 L 50 50 1 1 O
-ENDDRAW
-ENDDEF
-#
 # ADA4522-2
 #
 DEF ADA4522-2 U 0 10 Y Y 1 F N
@@ -134,35 +102,11 @@ X P1 1 -200 0 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# CONN_01X03
-#
-DEF CONN_01X03 J 0 40 Y N 1 F N
-F0 "J" 0 200 50 H V C CNN
-F1 "CONN_01X03" 100 0 50 V V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-$FPLIST
- Pin_Header_Straight_1X*
- Pin_Header_Angled_1X*
- Socket_Strip_Straight_1X*
- Socket_Strip_Angled_1X*
-$ENDFPLIST
-DRAW
-S -50 -95 10 -105 0 1 0 N
-S -50 5 10 -5 0 1 0 N
-S -50 105 10 95 0 1 0 N
-S -50 150 50 -150 0 1 0 N
-X P1 1 -200 100 150 R 50 50 1 1 P
-X P2 2 -200 0 150 R 50 50 1 1 P
-X P3 3 -200 -100 150 R 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
-# CONN_01X04
+# CONN_01X02
 #
-DEF CONN_01X04 J 0 40 Y N 1 F N
-F0 "J" 0 250 50 H V C CNN
-F1 "CONN_01X04" 100 0 50 V V C CNN
+DEF CONN_01X02 J 0 40 Y N 1 F N
+F0 "J" 0 150 50 H V C CNN
+F1 "CONN_01X02" 100 0 50 V V C CNN
 F2 "" 0 0 50 H I C CNN
 F3 "" 0 0 50 H I C CNN
 $FPLIST
@@ -172,15 +116,11 @@ $FPLIST
  Socket_Strip_Angled_1X*
 $ENDFPLIST
 DRAW
-S -50 -145 10 -155 0 1 0 N
 S -50 -45 10 -55 0 1 0 N
 S -50 55 10 45 0 1 0 N
-S -50 155 10 145 0 1 0 N
-S -50 200 50 -200 0 1 0 N
-X P1 1 -200 150 150 R 50 50 1 1 P
-X P2 2 -200 50 150 R 50 50 1 1 P
-X P3 3 -200 -50 150 R 50 50 1 1 P
-X P4 4 -200 -150 150 R 50 50 1 1 P
+S -50 100 50 -100 0 1 0 N
+X P1 1 -200 50 150 R 50 50 1 1 P
+X P2 2 -200 -50 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
@@ -341,6 +281,34 @@ X A 2 150 0 100 L 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# LM358
+#
+DEF LM358 U 0 20 Y Y 2 F N
+F0 "U" 0 200 50 H V L CNN
+F1 "LM358" 0 -200 50 H V L CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS LMC6062 LMC6082 LM358N TL072 TL082 NE5532 4558 LMV358 TS912 TLC272 MCP602
+$FPLIST
+ SOIC*Pitch1.27mm*
+ DIP*W7.62mm*
+ TSSOP*Pitch0.65mm*
+ TO-99*
+ DSBGA*
+$ENDFPLIST
+DRAW
+P 4 0 1 10 -200 200 200 0 -200 -200 -200 200 f
+X V- 4 -100 -300 150 U 50 50 0 1 W
+X V+ 8 -100 300 150 D 50 50 0 1 W
+X ~ 1 300 0 100 L 50 50 1 1 O
+X - 2 -300 -100 100 R 50 50 1 1 I
+X + 3 -300 100 100 R 50 50 1 1 I
+X + 5 -300 100 100 R 50 50 2 1 I
+X - 6 -300 -100 100 R 50 50 2 1 I
+X ~ 7 300 0 100 L 50 50 2 1 O
+ENDDRAW
+ENDDEF
+#
 # LTC6268
 #
 DEF LTC6268 U 0 10 Y Y 1 F N
@@ -390,23 +358,6 @@ X C 3 100 200 100 D 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# POT
-#
-DEF POT RV 0 40 N N 1 F N
-F0 "RV" -175 0 50 V V C CNN
-F1 "POT" -100 0 50 V V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-DRAW
-S 40 100 -40 -100 0 1 10 N
-P 2 0 1 0 100 0 60 0 N
-P 3 0 1 0 45 0 90 20 90 -20 F
-X 1 1 0 150 50 D 50 50 1 1 P
-X 2 2 150 0 50 L 50 50 1 1 P
-X 3 3 0 -150 50 U 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
 # PWR_FLAG
 #
 DEF PWR_FLAG #FLG 0 0 N N 1 F P
@@ -420,68 +371,6 @@ P 6 0 1 0 0 0 0 50 -40 75 0 100 40 75 0 50 N
 ENDDRAW
 ENDDEF
 #
-# Q_NMOS_GSD
-#
-DEF Q_NMOS_GSD Q 0 0 Y N 1 F N
-F0 "Q" 200 50 50 H V L CNN
-F1 "Q_NMOS_GSD" 200 -50 50 H V L CNN
-F2 "" 200 100 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-DRAW
-C 65 0 111 0 1 10 N
-C 100 -70 11 0 1 0 F
-C 100 70 11 0 1 0 F
-P 2 0 1 0 30 -70 100 -70 N
-P 2 0 1 10 30 -50 30 -90 N
-P 2 0 1 0 30 0 100 0 N
-P 2 0 1 10 30 20 30 -20 N
-P 2 0 1 0 30 70 100 70 N
-P 2 0 1 10 30 90 30 50 N
-P 2 0 1 0 100 -70 100 -100 N
-P 2 0 1 0 100 -70 100 0 N
-P 2 0 1 0 100 100 100 70 N
-P 3 0 1 10 10 75 10 -75 10 -75 N
-P 4 0 1 0 40 0 80 15 80 -15 40 0 F
-P 4 0 1 0 100 -70 130 -70 130 70 100 70 N
-P 4 0 1 0 110 20 115 15 145 15 150 10 N
-P 4 0 1 0 130 15 115 -10 145 -10 130 15 N
-X G 1 -200 0 210 R 50 50 1 1 I
-X S 2 100 -200 100 U 50 50 1 1 P
-X D 3 100 200 100 D 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
-# Q_PMOS_GSD
-#
-DEF Q_PMOS_GSD Q 0 0 Y N 1 F N
-F0 "Q" 200 50 50 H V L CNN
-F1 "Q_PMOS_GSD" 200 -50 50 H V L CNN
-F2 "" 200 100 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-DRAW
-C 65 0 111 0 1 10 N
-C 100 -70 11 0 1 0 F
-C 100 70 11 0 1 0 F
-P 2 0 1 0 30 -70 100 -70 N
-P 2 0 1 10 30 -50 30 -90 N
-P 2 0 1 0 30 0 100 0 N
-P 2 0 1 10 30 20 30 -20 N
-P 2 0 1 0 30 70 100 70 N
-P 2 0 1 10 30 90 30 50 N
-P 2 0 1 0 100 -70 100 -100 N
-P 2 0 1 0 100 -70 100 0 N
-P 2 0 1 0 100 100 100 70 N
-P 3 0 1 10 10 75 10 -75 10 -75 N
-P 4 0 1 0 90 0 50 -15 50 15 90 0 F
-P 4 0 1 0 100 -70 130 -70 130 70 100 70 N
-P 4 0 1 0 110 -20 115 -15 145 -15 150 -10 N
-P 4 0 1 0 130 -15 115 10 145 10 130 -15 N
-X G 1 -200 0 210 R 50 50 1 1 I
-X S 2 100 -200 100 U 50 50 1 1 P
-X D 3 100 200 100 D 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
 # R
 #
 DEF R R 0 0 N Y 1 F N
diff --git a/pcbs/analog_board_v0.22/analog_board_v0.22.bak b/pcbs/analog_board_v0.22/analog_board_v0.22.bak
index c102568..76f09ad 100644
--- a/pcbs/analog_board_v0.22/analog_board_v0.22.bak
+++ b/pcbs/analog_board_v0.22/analog_board_v0.22.bak
@@ -91,7 +91,8 @@ F4 "GPIO_COIL_4" I L 7675 3575 60
 F5 "GPIO_COIL_1" I L 7675 3275 60 
 F6 "GPIO_COIL_2" I L 7675 3375 60 
 F7 "LED_CONTROLL" I L 7675 3025 60 
-F8 "-3.3V" O R 9375 3825 60 
+F8 "V_SENS_POS" O R 9375 3575 60 
+F9 "V_SENS_NEG" O R 9375 3700 60 
 $EndSheet
 $Comp
 L GND #PWR01
@@ -182,16 +183,6 @@ Wire Wire Line
 	3550 3625 4825 3625
 Wire Wire Line
 	3550 3725 4825 3725
-Wire Wire Line
-	9375 3825 9725 3825
-Wire Wire Line
-	9725 3825 9725 2375
-Wire Wire Line
-	9725 2375 1375 2375
-Wire Wire Line
-	1375 2375 1375 3175
-Wire Wire Line
-	1375 3175 1850 3175
 $Comp
 L +3.3V #PWR03
 U 1 1 59593859
diff --git a/pcbs/analog_board_v0.22/analog_board_v0.22.sch b/pcbs/analog_board_v0.22/analog_board_v0.22.sch
index c102568..76f09ad 100644
--- a/pcbs/analog_board_v0.22/analog_board_v0.22.sch
+++ b/pcbs/analog_board_v0.22/analog_board_v0.22.sch
@@ -91,7 +91,8 @@ F4 "GPIO_COIL_4" I L 7675 3575 60
 F5 "GPIO_COIL_1" I L 7675 3275 60 
 F6 "GPIO_COIL_2" I L 7675 3375 60 
 F7 "LED_CONTROLL" I L 7675 3025 60 
-F8 "-3.3V" O R 9375 3825 60 
+F8 "V_SENS_POS" O R 9375 3575 60 
+F9 "V_SENS_NEG" O R 9375 3700 60 
 $EndSheet
 $Comp
 L GND #PWR01
@@ -182,16 +183,6 @@ Wire Wire Line
 	3550 3625 4825 3625
 Wire Wire Line
 	3550 3725 4825 3725
-Wire Wire Line
-	9375 3825 9725 3825
-Wire Wire Line
-	9725 3825 9725 2375
-Wire Wire Line
-	9725 2375 1375 2375
-Wire Wire Line
-	1375 2375 1375 3175
-Wire Wire Line
-	1375 3175 1850 3175
 $Comp
 L +3.3V #PWR03
 U 1 1 59593859
diff --git a/pcbs/analog_board_v0.22/highCurrentPart.bak b/pcbs/analog_board_v0.22/highCurrentPart.bak
index 753a4f2..5151ec2 100644
--- a/pcbs/analog_board_v0.22/highCurrentPart.bak
+++ b/pcbs/analog_board_v0.22/highCurrentPart.bak
@@ -49,944 +49,736 @@ Comment3 ""
 Comment4 ""
 $EndDescr
 $Comp
-L GND #PWR020
-U 1 1 5940A4E3
-P 8150 3325
-F 0 "#PWR020" H 8150 3075 50  0001 C CNN
-F 1 "GND" H 8150 3175 50  0000 C CNN
-F 2 "" H 8150 3325 50  0000 C CNN
-F 3 "" H 8150 3325 50  0000 C CNN
-	1    8150 3325
-	1    0    0    -1  
-$EndComp
-$Comp
-L AD8616 U4
-U 1 1 5940A4EA
-P 8150 2650
-F 0 "U4" H 7529 2354 50  0000 L CNN
-F 1 "AD8616" H 8450 2350 50  0000 L CNN
-F 2 "SMD_Packages:SOIC-8-N" H 7953 2700 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/1841629.pdf" H 7853 2800 50  0001 C CNN
-F 4 "1581952" H 8150 2650 60  0001 C CNN "Farnell"
-	1    8150 2650
-	1    0    0    -1  
-$EndComp
-$Comp
 L R R13
 U 1 1 5940A522
-P 9375 2350
-F 0 "R13" V 9455 2350 50  0000 C CNN
-F 1 "1M" V 9375 2350 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 9305 2350 50  0001 C CNN
-F 3 "" H 9375 2350 50  0000 C CNN
-F 4 "1576507" V 9375 2350 60  0001 C CNN "Farnell"
-	1    9375 2350
+P 7675 2575
+F 0 "R13" V 7755 2575 50  0000 C CNN
+F 1 "1M" V 7675 2575 50  0000 C CNN
+F 2 "Resistors_SMD:R_0805" V 7605 2575 50  0001 C CNN
+F 3 "" H 7675 2575 50  0000 C CNN
+F 4 "1576507" V 7675 2575 60  0001 C CNN "Farnell"
+	1    7675 2575
 	0    1    -1   0   
 $EndComp
 $Comp
 L D_Photo D3
 U 1 1 5940A54D
-P 9725 3025
-F 0 "D3" H 9745 3095 50  0000 L CNN
-F 1 "BPW34" H 9685 2915 50  0000 C CNN
-F 2 "Photodiodes:BPW34FA" H 9675 3025 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2046123.pdf" H 9675 3025 50  0001 C CNN
-F 4 "1045425" H 9725 3025 60  0001 C CNN "Farnell"
-	1    9725 3025
+P 8450 3425
+F 0 "D3" H 8470 3495 50  0000 L CNN
+F 1 "BPW34" H 8410 3315 50  0000 C CNN
+F 2 "Photodiodes:BPW34FA" H 8400 3425 50  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2046123.pdf" H 8400 3425 50  0001 C CNN
+F 4 "1045425" H 8450 3425 60  0001 C CNN "Farnell"
+	1    8450 3425
 	0    -1   1    0   
 $EndComp
 $Comp
-L GND #PWR021
-U 1 1 5940A554
-P 9725 3325
-F 0 "#PWR021" H 9725 3075 50  0001 C CNN
-F 1 "GND" H 9725 3175 50  0000 C CNN
-F 2 "" H 9725 3325 50  0000 C CNN
-F 3 "" H 9725 3325 50  0000 C CNN
-	1    9725 3325
-	-1   0    0    -1  
-$EndComp
-Wire Wire Line
-	8900 2350 9225 2350
-Wire Wire Line
-	8150 3200 8150 3325
-$Comp
 L LED D2
 U 1 1 5940A5C4
-P 6775 1900
-F 0 "D2" H 6775 2000 50  0000 C CNN
-F 1 "LED" H 6775 1800 50  0000 C CNN
-F 2 "LEDs:LED_D5.0mm" H 6775 1900 50  0001 C CNN
-F 3 "" H 6775 1900 50  0000 C CNN
-	1    6775 1900
+P 4300 2250
+F 0 "D2" H 4300 2350 50  0000 C CNN
+F 1 "LED" H 4300 2150 50  0000 C CNN
+F 2 "LEDs:LED_D5.0mm" H 4300 2250 50  0001 C CNN
+F 3 "" H 4300 2250 50  0000 C CNN
+	1    4300 2250
 	0    -1   -1   0   
 $EndComp
 $Comp
-L POT RV1
-U 1 1 5940A5CC
-P 7900 3925
-F 0 "RV1" V 7725 3925 50  0000 C CNN
-F 1 "T73YE103KT20" V 7800 3925 50  0000 C CNN
-F 2 "MyPotis:Vishay_T73YE103KT20" H 7900 3925 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2243711.pdf" H 7900 3925 50  0001 C CNN
-F 4 "2550676" V 7900 3925 60  0001 C CNN "Farnell"
-	1    7900 3925
-	0    1    1    0   
-$EndComp
-$Comp
 L R R9
 U 1 1 5940A5D3
-P 6775 3075
-F 0 "R9" V 6855 3075 50  0000 C CNN
-F 1 "100R" V 6775 3075 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 6705 3075 50  0001 C CNN
-F 3 "" H 6775 3075 50  0000 C CNN
-F 4 "1632456" V 6775 3075 60  0001 C CNN "Farnell"
-	1    6775 3075
+P 4300 3300
+F 0 "R9" V 4380 3300 50  0000 C CNN
+F 1 "100R" V 4300 3300 50  0000 C CNN
+F 2 "Resistors_SMD:R_0805" V 4230 3300 50  0001 C CNN
+F 3 "" H 4300 3300 50  0000 C CNN
+F 4 "1632456" V 4300 3300 60  0001 C CNN "Farnell"
+	1    4300 3300
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	6775 2550 6775 2925
-Wire Wire Line
-	6775 2050 6775 2150
 $Comp
 L +5V #PWR022
 U 1 1 5940A5DC
-P 6775 1675
-F 0 "#PWR022" H 6775 1525 50  0001 C CNN
-F 1 "+5V" H 6775 1815 50  0000 C CNN
-F 2 "" H 6775 1675 50  0000 C CNN
-F 3 "" H 6775 1675 50  0000 C CNN
-	1    6775 1675
+P 4300 2025
+F 0 "#PWR022" H 4300 1875 50  0001 C CNN
+F 1 "+5V" H 4300 2165 50  0000 C CNN
+F 2 "" H 4300 2025 50  0000 C CNN
+F 3 "" H 4300 2025 50  0000 C CNN
+	1    4300 2025
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	6775 1675 6775 1750
 $Comp
 L GND #PWR023
 U 1 1 5940A5E4
-P 6775 3350
-F 0 "#PWR023" H 6775 3100 50  0001 C CNN
-F 1 "GND" H 6775 3200 50  0000 C CNN
-F 2 "" H 6775 3350 50  0000 C CNN
-F 3 "" H 6775 3350 50  0000 C CNN
-	1    6775 3350
-	1    0    0    -1  
+P 5400 2925
+F 0 "#PWR023" H 5400 2675 50  0001 C CNN
+F 1 "GND" H 5400 2775 50  0000 C CNN
+F 2 "" H 5400 2925 50  0000 C CNN
+F 3 "" H 5400 2925 50  0000 C CNN
+	1    5400 2925
+	-1   0    0    1   
 $EndComp
-Wire Wire Line
-	6775 3225 6775 3350
 $Comp
 L MMBT3904 Q9
 U 1 1 5940A5EB
-P 6875 2350
-F 0 "Q9" H 7075 2425 50  0000 L CNN
-F 1 "MMBT3904" H 7075 2350 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 7075 2275 50  0001 L CIN
-F 3 "https://www.fairchildsemi.com/datasheets/MM/MMBT3904.pdf" H 6875 2350 50  0001 L CNN
-F 4 "1757935" H 6875 2350 60  0001 C CNN "Farnell"
-	1    6875 2350
+P 4400 2675
+F 0 "Q9" H 4600 2750 50  0000 L CNN
+F 1 "MMBT3904" H 4600 2675 50  0000 L CNN
+F 2 "TO_SOT_Packages_SMD:SOT-23" H 4600 2600 50  0001 L CIN
+F 3 "https://www.fairchildsemi.com/datasheets/MM/MMBT3904.pdf" H 4400 2675 50  0001 L CNN
+F 4 "1757935" H 4400 2675 60  0001 C CNN "Farnell"
+	1    4400 2675
 	-1   0    0    -1  
 $EndComp
-Wire Wire Line
-	9725 3125 9725 3325
-Wire Wire Line
-	7075 2350 7350 2350
-Text GLabel 7350 2750 0    60   Input ~ 0
+Text GLabel 4875 3325 0    60   Input ~ 0
 Signal
-$Comp
-L GND #PWR024
-U 1 1 5940A601
-P 7675 3925
-F 0 "#PWR024" H 7675 3675 50  0001 C CNN
-F 1 "GND" H 7675 3775 50  0000 C CNN
-F 2 "" H 7675 3925 50  0000 C CNN
-F 3 "" H 7675 3925 50  0000 C CNN
-	1    7675 3925
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	8100 3925 8050 3925
-Wire Wire Line
-	7750 3925 7675 3925
-Text GLabel 9825 4450 2    60   Output ~ 0
+Text GLabel 5150 4150 2    60   Output ~ 0
 Signal
 $Comp
-L +5V #PWR025
-U 1 1 5940A60A
-P 8450 3925
-F 0 "#PWR025" H 8450 3775 50  0001 C CNN
-F 1 "+5V" H 8450 4065 50  0000 C CNN
-F 2 "" H 8450 3925 50  0000 C CNN
-F 3 "" H 8450 3925 50  0000 C CNN
-	1    8450 3925
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	8450 3925 8400 3925
-Wire Wire Line
-	6900 2550 7350 2550
-Wire Wire Line
-	6775 2775 6900 2775
-Wire Wire Line
-	6900 2775 6900 2550
-Connection ~ 6775 2775
-$Comp
-L GND #PWR026
-U 1 1 5940EF10
-P 8900 3325
-F 0 "#PWR026" H 8900 3075 50  0001 C CNN
-F 1 "GND" H 8900 3175 50  0000 C CNN
-F 2 "" H 8900 3325 50  0000 C CNN
-F 3 "" H 8900 3325 50  0000 C CNN
-	1    8900 3325
-	-1   0    0    -1  
-$EndComp
-Wire Wire Line
-	8900 2750 8900 3325
-$Comp
 L C C20
 U 1 1 594122D8
-P 7350 1750
-F 0 "C20" H 7375 1850 50  0000 L CNN
-F 1 "1u" H 7375 1650 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 7388 1600 50  0001 C CNN
-F 3 "" H 7350 1750 50  0000 C CNN
-F 4 "2496946" H 7350 1750 60  0001 C CNN "Farnell"
-	1    7350 1750
+P 5900 1250
+F 0 "C20" H 5925 1350 50  0000 L CNN
+F 1 "1u" H 5925 1150 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 5938 1100 50  0001 C CNN
+F 3 "" H 5900 1250 50  0000 C CNN
+F 4 "2496946" H 5900 1250 60  0001 C CNN "Farnell"
+	1    5900 1250
 	1    0    0    -1  
 $EndComp
 $Comp
 L C C21
 U 1 1 594122E0
-P 7600 1750
-F 0 "C21" H 7625 1850 50  0000 L CNN
-F 1 "100n" H 7625 1650 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 7638 1600 50  0001 C CNN
-F 3 "" H 7600 1750 50  0000 C CNN
-F 4 "499687" H 7600 1750 60  0001 C CNN "Farnell"
-	1    7600 1750
+P 6150 1250
+F 0 "C21" H 6175 1350 50  0000 L CNN
+F 1 "100n" H 6175 1150 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 6188 1100 50  0001 C CNN
+F 3 "" H 6150 1250 50  0000 C CNN
+F 4 "499687" H 6150 1250 60  0001 C CNN "Farnell"
+	1    6150 1250
 	1    0    0    -1  
 $EndComp
 $Comp
 L C C22
 U 1 1 594122E8
-P 7850 1750
-F 0 "C22" H 7875 1850 50  0000 L CNN
-F 1 "10n" H 7875 1650 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 7888 1600 50  0001 C CNN
-F 3 "" H 7850 1750 50  0000 C CNN
-F 4 "1414662" H 7850 1750 60  0001 C CNN "Farnell"
-	1    7850 1750
+P 6400 1250
+F 0 "C22" H 6425 1350 50  0000 L CNN
+F 1 "10n" H 6425 1150 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 6438 1100 50  0001 C CNN
+F 3 "" H 6400 1250 50  0000 C CNN
+F 4 "1414662" H 6400 1250 60  0001 C CNN "Farnell"
+	1    6400 1250
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	7350 1600 8150 1600
-Connection ~ 7600 1600
+	5900 1100 6700 1100
+Connection ~ 6150 1100
 $Comp
 L GND #PWR027
 U 1 1 594122F3
-P 7350 1975
-F 0 "#PWR027" H 7350 1725 50  0001 C CNN
-F 1 "GND" H 7350 1825 50  0000 C CNN
-F 2 "" H 7350 1975 50  0000 C CNN
-F 3 "" H 7350 1975 50  0000 C CNN
-	1    7350 1975
+P 5900 1475
+F 0 "#PWR027" H 5900 1225 50  0001 C CNN
+F 1 "GND" H 5900 1325 50  0000 C CNN
+F 2 "" H 5900 1475 50  0000 C CNN
+F 3 "" H 5900 1475 50  0000 C CNN
+	1    5900 1475
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	7350 1900 7350 1975
+	5900 1400 5900 1475
 Wire Wire Line
-	7350 1900 7850 1900
-Connection ~ 7600 1900
-Text Notes 5725 1450 0    60   ~ 0
+	5900 1400 6400 1400
+Connection ~ 6150 1400
+Text Notes 5300 725  0    60   ~ 0
 Place decoupling capacitors close to component!
+Text HLabel 6825 3225 0    60   Output ~ 0
+BPW34_OUT
+Connection ~ 6400 1100
+Text HLabel 4950 4150 0    60   Input ~ 0
+LED_CONTROLL
 $Comp
-L CONN_01X03 P3
-U 1 1 5941362B
-P 9525 4450
-F 0 "P3" H 9525 4650 50  0000 C CNN
-F 1 "CONN_01X03" V 9625 4450 50  0000 C CNN
-F 2 "Samtec Connectors:Samtec-PHT-1-3-01-L-S" H 9525 4450 50  0001 C CNN
-F 3 "" H 9525 4450 50  0000 C CNN
-	1    9525 4450
-	-1   0    0    -1  
-$EndComp
-$Comp
-L CONN_01X03 P2
-U 1 1 59416658
-P 9200 4450
-F 0 "P2" H 9200 4650 50  0000 C CNN
-F 1 "CONN_01X03" V 9300 4450 50  0000 C CNN
-F 2 "Samtec Connectors:Samtec-PHT-1-3-01-L-S" H 9200 4450 50  0001 C CNN
-F 3 "" H 9200 4450 50  0000 C CNN
-	1    9200 4450
-	1    0    0    -1  
+L C C23
+U 1 1 5956BF7A
+P 7675 2200
+F 0 "C23" H 7700 2300 50  0000 L CNN
+F 1 "100n" H 7700 2100 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 7713 2050 50  0001 C CNN
+F 3 "" H 7675 2200 50  0000 C CNN
+F 4 "499687" H 7675 2200 60  0001 C CNN "Farnell"
+	1    7675 2200
+	0    1    1    0   
 $EndComp
-Wire Wire Line
-	9725 4225 9725 4550
-Connection ~ 9725 4450
-Wire Wire Line
-	9725 4450 9825 4450
+Text Notes 6375 1975 0    60   ~ 0
+Low-pass has a cut-off freq. of approx. 1.6 Hz, ergo DC.
 $Comp
-L TEST SIG1
-U 1 1 594174AB
-P 9725 4225
-F 0 "SIG1" H 9725 4525 50  0000 C BNN
-F 1 "TEST" H 9725 4475 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 9725 4225 50  0001 C CNN
-F 3 "" H 9725 4225 50  0000 C CNN
-	1    9725 4225
+L +3.3V #PWR043
+U 1 1 595BE0DA
+P 6700 1025
+F 0 "#PWR043" H 6700 875 50  0001 C CNN
+F 1 "+3.3V" H 6700 1165 50  0000 C CNN
+F 2 "" H 6700 1025 50  0001 C CNN
+F 3 "" H 6700 1025 50  0001 C CNN
+	1    6700 1025
 	-1   0    0    -1  
 $EndComp
-Connection ~ 9725 4350
-$Comp
-L R R10
-U 1 1 59417DE3
-P 8250 3925
-F 0 "R10" V 8330 3925 50  0000 C CNN
-F 1 "100k" V 8250 3925 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 8180 3925 50  0001 C CNN
-F 3 "" H 8250 3925 50  0000 C CNN
-F 4 "2447551" V 8250 3925 60  0001 C CNN "Farnell"
-	1    8250 3925
-	0    1    1    0   
-$EndComp
 $Comp
-L R R11
-U 1 1 59417DEB
-P 8450 4125
-F 0 "R11" V 8530 4125 50  0000 C CNN
-F 1 "10k" V 8450 4125 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 8380 4125 50  0001 C CNN
-F 3 "" H 8450 4125 50  0000 C CNN
-F 4 "9237755" V 8450 4125 60  0001 C CNN "Farnell"
-	1    8450 4125
-	0    1    1    0   
+L LM358 U?
+U 1 1 5992FDFB
+P 7525 3225
+F 0 "U?" H 7525 3425 50  0000 L CNN
+F 1 "LM358" H 7525 3025 50  0000 L CNN
+F 2 "SMD_Packages:SOIC-8-N" H 7525 3225 50  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2000357.pdf" H 7525 3225 50  0001 C CNN
+F 4 "1564331" H 7525 3225 60  0001 C CNN "Farnell"
+	1    7525 3225
+	-1   0    0    1   
 $EndComp
+Wire Wire Line
+	6700 1100 6700 1025
 $Comp
-L R R12
-U 1 1 594182DF
-P 8900 4125
-F 0 "R12" V 8980 4125 50  0000 C CNN
-F 1 "100k" V 8900 4125 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 8830 4125 50  0001 C CNN
-F 3 "" H 8900 4125 50  0000 C CNN
-F 4 "2447551" V 8900 4125 60  0001 C CNN "Farnell"
-	1    8900 4125
-	0    1    1    0   
+L GND #PWR?
+U 1 1 599308E2
+P 7625 3700
+F 0 "#PWR?" H 7625 3450 50  0001 C CNN
+F 1 "GND" H 7625 3550 50  0000 C CNN
+F 2 "" H 7625 3700 50  0000 C CNN
+F 3 "" H 7625 3700 50  0000 C CNN
+	1    7625 3700
+	1    0    0    -1  
 $EndComp
 $Comp
-L +5V #PWR028
-U 1 1 5941842E
-P 9075 4125
-F 0 "#PWR028" H 9075 3975 50  0001 C CNN
-F 1 "+5V" H 9075 4265 50  0000 C CNN
-F 2 "" H 9075 4125 50  0000 C CNN
-F 3 "" H 9075 4125 50  0000 C CNN
-	1    9075 4125
-	1    0    0    -1  
+L +3.3V #PWR?
+U 1 1 599309A5
+P 7625 2925
+F 0 "#PWR?" H 7625 2775 50  0001 C CNN
+F 1 "+3.3V" H 7625 3065 50  0000 C CNN
+F 2 "" H 7625 2925 50  0001 C CNN
+F 3 "" H 7625 2925 50  0001 C CNN
+	1    7625 2925
+	-1   0    0    -1  
 $EndComp
 Wire Wire Line
-	9075 4125 9050 4125
+	7000 2200 7000 3225
 Wire Wire Line
-	8600 4125 8750 4125
-$Comp
-L GND #PWR029
-U 1 1 5941869D
-P 8225 4125
-F 0 "#PWR029" H 8225 3875 50  0001 C CNN
-F 1 "GND" H 8225 3975 50  0000 C CNN
-F 2 "" H 8225 4125 50  0000 C CNN
-F 3 "" H 8225 4125 50  0000 C CNN
-	1    8225 4125
-	1    0    0    -1  
-$EndComp
+	6825 3225 7225 3225
 Wire Wire Line
-	8300 4125 8225 4125
+	8450 3125 7825 3125
 Wire Wire Line
-	8675 4125 8675 4350
+	7825 2575 8450 2575
 Wire Wire Line
-	8675 4350 9000 4350
-Connection ~ 8675 4125
+	8450 2200 8450 3225
+Connection ~ 8450 3125
 Wire Wire Line
-	7900 4075 7900 4450
+	7525 2575 7000 2575
 Wire Wire Line
-	7900 4450 9000 4450
-Text Notes 6425 5175 0    60   ~ 0
-Constant current source with 100R sensing resistor. Monitoring diode included\nwith 1uA being translated into 1V.\n
-Text Notes 8650 3800 0    60   ~ 0
-Constant current with ca. 4.55 mA.
-Text HLabel 9000 1875 1    60   Output ~ 0
-BPW34_OUT
+	7525 2200 7000 2200
+Connection ~ 7000 2575
+Wire Wire Line
+	7825 2200 8450 2200
+Connection ~ 8450 2575
 $Comp
-L GND #PWR030
-U 1 1 59553CC6
-P 3000 1800
-F 0 "#PWR030" H 3000 1550 50  0001 C CNN
-F 1 "GND" H 3000 1650 50  0000 C CNN
-F 2 "" H 3000 1800 50  0001 C CNN
-F 3 "" H 3000 1800 50  0001 C CNN
-	1    3000 1800
+L GND #PWR?
+U 1 1 5993156D
+P 8450 3700
+F 0 "#PWR?" H 8450 3450 50  0001 C CNN
+F 1 "GND" H 8450 3550 50  0000 C CNN
+F 2 "" H 8450 3700 50  0000 C CNN
+F 3 "" H 8450 3700 50  0000 C CNN
+	1    8450 3700
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2800 1800 3125 1800
+	8450 3700 8450 3525
+Wire Wire Line
+	7625 3525 7625 3700
 $Comp
-L C C17
-U 1 1 5955413D
-P 1400 1800
-F 0 "C17" H 1425 1900 50  0000 L CNN
-F 1 "10u" H 1425 1700 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 1438 1650 50  0001 C CNN
-F 3 "" H 1400 1800 50  0001 C CNN
-F 4 "1833812" H 1400 1800 60  0001 C CNN "Farnell"
-	1    1400 1800
+L GND #PWR?
+U 1 1 5993166E
+P 8025 3700
+F 0 "#PWR?" H 8025 3450 50  0001 C CNN
+F 1 "GND" H 8025 3550 50  0000 C CNN
+F 2 "" H 8025 3700 50  0000 C CNN
+F 3 "" H 8025 3700 50  0000 C CNN
+	1    8025 3700
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	9725 2550 8900 2550
+	7825 3325 8025 3325
 Wire Wire Line
-	9725 2050 9725 2825
+	8025 3325 8025 3700
+Connection ~ 7000 3225
 Wire Wire Line
-	9725 2350 9525 2350
-Connection ~ 9725 2550
+	5800 3225 6000 3225
 Wire Wire Line
-	9000 2050 9225 2050
+	6000 3225 6000 2675
 Wire Wire Line
-	9000 1875 9000 2350
-Connection ~ 9000 2350
+	6000 2675 4600 2675
 Wire Wire Line
-	9525 2050 9725 2050
-Connection ~ 9725 2350
-Connection ~ 9000 2050
-$Comp
-L Q_PMOS_GSD Q3
-U 1 1 59556D86
-P 2275 5475
-F 0 "Q3" H 2475 5525 50  0000 L CNN
-F 1 "DMP2035U" H 2475 5425 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 5575 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 2275 5475 50  0001 C CNN
-F 4 "2061419" H 2275 5475 60  0001 C CNN "Farnell"
-	1    2275 5475
-	1    0    0    1   
-$EndComp
+	4300 2875 4300 3150
+Wire Wire Line
+	5200 3125 4300 3125
+Connection ~ 4300 3125
 Wire Wire Line
-	2375 5675 2375 5925
+	4300 2025 4300 2125
 $Comp
-L GND #PWR031
-U 1 1 59557860
-P 2375 6425
-F 0 "#PWR031" H 2375 6175 50  0001 C CNN
-F 1 "GND" H 2375 6275 50  0000 C CNN
-F 2 "" H 2375 6425 50  0000 C CNN
-F 3 "" H 2375 6425 50  0000 C CNN
-	1    2375 6425
+L GND #PWR?
+U 1 1 59933226
+P 4300 3675
+F 0 "#PWR?" H 4300 3425 50  0001 C CNN
+F 1 "GND" H 4300 3525 50  0000 C CNN
+F 2 "" H 4300 3675 50  0000 C CNN
+F 3 "" H 4300 3675 50  0000 C CNN
+	1    4300 3675
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2375 6325 2375 6425
+	4300 3450 4300 3675
 $Comp
-L +5V #PWR032
-U 1 1 59557DF9
-P 2375 5200
-F 0 "#PWR032" H 2375 5050 50  0001 C CNN
-F 1 "+5V" H 2375 5340 50  0000 C CNN
-F 2 "" H 2375 5200 50  0000 C CNN
-F 3 "" H 2375 5200 50  0000 C CNN
-	1    2375 5200
-	1    0    0    -1  
+L +3.3V #PWR?
+U 1 1 5993334C
+P 5400 3525
+F 0 "#PWR?" H 5400 3375 50  0001 C CNN
+F 1 "+3.3V" H 5400 3665 50  0000 C CNN
+F 2 "" H 5400 3525 50  0001 C CNN
+F 3 "" H 5400 3525 50  0001 C CNN
+	1    5400 3525
+	1    0    0    1   
 $EndComp
 Wire Wire Line
-	2375 5200 2375 5275
-Wire Wire Line
-	2075 5475 1950 5475
-Wire Wire Line
-	1950 5400 1950 6125
-Wire Wire Line
-	1950 6125 2075 6125
-Text HLabel 1875 5800 0    60   Input ~ 0
-GPIO_COIL_3
+	4300 2400 4300 2475
+$Comp
+L R R?
+U 1 1 599338A5
+P 5025 3525
+F 0 "R?" V 5105 3525 50  0000 C CNN
+F 1 "10k" V 5025 3525 50  0000 C CNN
+F 2 "Resistors_SMD:R_0805" V 4955 3525 50  0001 C CNN
+F 3 "" H 5025 3525 50  0000 C CNN
+F 4 "9237755" V 5025 3525 60  0001 C CNN "Farnell"
+	1    5025 3525
+	-1   0    0    1   
+$EndComp
 Wire Wire Line
-	1875 5800 1950 5800
-Connection ~ 1950 5800
+	4875 3325 5200 3325
 Wire Wire Line
-	4025 5675 4025 5925
+	5025 3325 5025 3375
+Connection ~ 5025 3325
 $Comp
-L GND #PWR033
-U 1 1 59558304
-P 4025 6425
-F 0 "#PWR033" H 4025 6175 50  0001 C CNN
-F 1 "GND" H 4025 6275 50  0000 C CNN
-F 2 "" H 4025 6425 50  0000 C CNN
-F 3 "" H 4025 6425 50  0000 C CNN
-	1    4025 6425
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 59933D3E
+P 5025 3675
+F 0 "#PWR?" H 5025 3425 50  0001 C CNN
+F 1 "GND" H 5025 3525 50  0000 C CNN
+F 2 "" H 5025 3675 50  0000 C CNN
+F 3 "" H 5025 3675 50  0000 C CNN
+	1    5025 3675
+	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	4025 6325 4025 6425
 $Comp
-L +5V #PWR034
-U 1 1 5955830B
-P 4025 5200
-F 0 "#PWR034" H 4025 5050 50  0001 C CNN
-F 1 "+5V" H 4025 5340 50  0000 C CNN
-F 2 "" H 4025 5200 50  0000 C CNN
-F 3 "" H 4025 5200 50  0000 C CNN
-	1    4025 5200
-	-1   0    0    -1  
+L LM358 U?
+U 2 1 599346AA
+P 5500 3225
+F 0 "U?" H 5500 3425 50  0000 L CNN
+F 1 "LM358" H 5500 3025 50  0000 L CNN
+F 2 "SMD_Packages:SOIC-8-N" H 5500 3225 50  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2000357.pdf" H 5500 3225 50  0001 C CNN
+F 4 "1564331" H 5500 3225 60  0001 C CNN "Farnell"
+	2    5500 3225
+	1    0    0    1   
 $EndComp
 Wire Wire Line
-	4025 5200 4025 5275
-Wire Wire Line
-	4325 5475 4450 5475
-Wire Wire Line
-	4450 5400 4450 6125
-Wire Wire Line
-	4450 6125 4325 6125
-Text HLabel 4525 5800 2    60   Input ~ 0
-GPIO_COIL_4
-Wire Wire Line
-	4525 5800 4450 5800
-Connection ~ 4450 5800
+	4950 4150 5150 4150
 $Comp
-L Q_PMOS_GSD Q7
-U 1 1 5955D522
-P 4125 5475
-F 0 "Q7" H 4325 5525 50  0000 L CNN
-F 1 "DMP2035U" H 4325 5425 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 5575 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 4125 5475 50  0001 C CNN
-F 4 "2061419" H 4125 5475 60  0001 C CNN "Farnell"
-	1    4125 5475
-	-1   0    0    1   
+L C C?
+U 1 1 59935E81
+P 1125 5650
+F 0 "C?" H 1150 5750 50  0000 L CNN
+F 1 "10u" H 1150 5550 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 1163 5500 50  0001 C CNN
+F 3 "" H 1125 5650 50  0001 C CNN
+F 4 "1833812" H 1125 5650 60  0001 C CNN "Farnell"
+	1    1125 5650
+	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	3350 5700 3350 5800
-Wire Wire Line
-	3350 5800 4025 5800
-Connection ~ 4025 5800
-Wire Wire Line
-	2375 5800 3075 5800
-Connection ~ 2375 5800
-Wire Wire Line
-	3075 5800 3075 5700
-Text Notes 1625 6875 0    60   ~ 0
-H bridge for driving a coil with a rectangular signal in the mHz range. Designed\nfor at least 100 mA. Maximum current unknown.
-Wire Wire Line
-	8150 1525 8150 2100
-Connection ~ 7850 1600
-Connection ~ 8150 1600
 $Comp
-L Q_PMOS_GSD Q1
-U 1 1 5956290B
-P 2275 3775
-F 0 "Q1" H 2475 3825 50  0000 L CNN
-F 1 "DMP2035U" H 2475 3725 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 3875 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 2275 3775 50  0001 C CNN
-F 4 "2061419" H 2275 3775 60  0001 C CNN "Farnell"
-	1    2275 3775
-	1    0    0    1   
+L +3.3V #PWR?
+U 1 1 59935E92
+P 2775 5275
+F 0 "#PWR?" H 2775 5125 50  0001 C CNN
+F 1 "+3.3V" H 2775 5415 50  0000 C CNN
+F 2 "" H 2775 5275 50  0001 C CNN
+F 3 "" H 2775 5275 50  0001 C CNN
+	1    2775 5275
+	1    0    0    -1  
 $EndComp
 $Comp
-L Q_NMOS_GSD Q2
-U 1 1 59562912
-P 2275 4425
-F 0 "Q2" H 2475 4475 50  0000 L CNN
-F 1 "TSM2314" H 2475 4375 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 4525 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 2275 4425 50  0001 C CNN
-F 4 "1864589" H 2275 4425 60  0001 C CNN "Farnell"
-	1    2275 4425
+L C C?
+U 1 1 59935E9B
+P 1650 6100
+F 0 "C?" H 1675 6200 50  0000 L CNN
+F 1 "10u" H 1675 6000 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 1688 5950 50  0001 C CNN
+F 3 "" H 1650 6100 50  0001 C CNN
+F 4 "1833812" H 1650 6100 60  0001 C CNN "Farnell"
+	1    1650 6100
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	2375 3975 2375 4225
 $Comp
-L GND #PWR035
-U 1 1 5956291A
-P 2375 4725
-F 0 "#PWR035" H 2375 4475 50  0001 C CNN
-F 1 "GND" H 2375 4575 50  0000 C CNN
-F 2 "" H 2375 4725 50  0000 C CNN
-F 3 "" H 2375 4725 50  0000 C CNN
-	1    2375 4725
+L GND #PWR?
+U 1 1 59935EA3
+P 1650 6275
+F 0 "#PWR?" H 1650 6025 50  0001 C CNN
+F 1 "GND" H 1650 6125 50  0000 C CNN
+F 2 "" H 1650 6275 50  0001 C CNN
+F 3 "" H 1650 6275 50  0001 C CNN
+	1    1650 6275
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	2375 4625 2375 4725
+NoConn ~ 2575 5500
+Text Notes 1075 4925 0    60   ~ 0
+Place decoupling capacitors close to component!
+$Comp
+L +3.3V #PWR?
+U 1 1 59935EBE
+P 1600 5275
+F 0 "#PWR?" H 1600 5125 50  0001 C CNN
+F 1 "+3.3V" H 1600 5415 50  0000 C CNN
+F 2 "" H 1600 5275 50  0001 C CNN
+F 3 "" H 1600 5275 50  0001 C CNN
+	1    1600 5275
+	-1   0    0    -1  
+$EndComp
 $Comp
-L +5V #PWR036
-U 1 1 59562921
-P 2375 3500
-F 0 "#PWR036" H 2375 3350 50  0001 C CNN
-F 1 "+5V" H 2375 3640 50  0000 C CNN
-F 2 "" H 2375 3500 50  0000 C CNN
-F 3 "" H 2375 3500 50  0000 C CNN
-	1    2375 3500
+L ICL7660S U?
+U 1 1 59935ED1
+P 2175 5350
+F 0 "U?" H 2020 5480 40  0000 C CNN
+F 1 "ICL7660S" H 2300 5480 40  0000 C CNN
+F 2 "SMD_Packages:SOIC-8-N" H 2175 5350 60  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2059962.pdf" H 2175 5350 60  0001 C CNN
+F 4 "1561969" H 2175 5350 60  0001 C CNN "Farnell"
+	1    2175 5350
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2375 3500 2375 3575
-Wire Wire Line
-	2075 3775 1950 3775
+	1600 5350 1775 5350
 Wire Wire Line
-	1950 3700 1950 4425
+	1600 5650 1775 5650
 Wire Wire Line
-	1950 4425 2075 4425
-Text HLabel 1875 4100 0    60   Input ~ 0
-GPIO_COIL_1
+	1650 5650 1650 5950
 Wire Wire Line
-	1875 4100 1950 4100
-Connection ~ 1950 4100
-Wire Wire Line
-	4025 3975 4025 4225
+	1650 6250 1650 6275
 $Comp
-L GND #PWR037
-U 1 1 59562931
-P 4025 4725
-F 0 "#PWR037" H 4025 4475 50  0001 C CNN
-F 1 "GND" H 4025 4575 50  0000 C CNN
-F 2 "" H 4025 4725 50  0000 C CNN
-F 3 "" H 4025 4725 50  0000 C CNN
-	1    4025 4725
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 59936476
+P 2650 6275
+F 0 "#PWR?" H 2650 6025 50  0001 C CNN
+F 1 "GND" H 2650 6125 50  0000 C CNN
+F 2 "" H 2650 6275 50  0001 C CNN
+F 3 "" H 2650 6275 50  0001 C CNN
+	1    2650 6275
+	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	4025 4625 4025 4725
-$Comp
-L +5V #PWR038
-U 1 1 59562938
-P 4025 3500
-F 0 "#PWR038" H 4025 3350 50  0001 C CNN
-F 1 "+5V" H 4025 3640 50  0000 C CNN
-F 2 "" H 4025 3500 50  0000 C CNN
-F 3 "" H 4025 3500 50  0000 C CNN
-	1    4025 3500
-	-1   0    0    -1  
-$EndComp
+	2575 5650 2650 5650
 Wire Wire Line
-	4025 3500 4025 3575
+	2650 5650 2650 6275
 Wire Wire Line
-	4325 3775 4450 3775
+	2575 5800 2650 5800
+Connection ~ 2650 5800
 Wire Wire Line
-	4450 3700 4450 4425
+	1125 5800 1125 5875
 Wire Wire Line
-	4450 4425 4325 4425
-Text HLabel 4525 4100 2    60   Input ~ 0
-GPIO_COIL_2
+	1125 5875 1325 5875
 Wire Wire Line
-	4525 4100 4450 4100
-Connection ~ 4450 4100
-$Comp
-L Q_PMOS_GSD Q5
-U 1 1 59562954
-P 4125 3775
-F 0 "Q5" H 4325 3825 50  0000 L CNN
-F 1 "DMP2035U" H 4325 3725 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 3875 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 4125 3775 50  0001 C CNN
-F 4 "2061419" H 4125 3775 60  0001 C CNN "Farnell"
-	1    4125 3775
-	-1   0    0    1   
-$EndComp
+	1325 5875 1325 5800
 Wire Wire Line
-	3350 4000 3350 4100
+	1325 5800 1775 5800
 Wire Wire Line
-	3350 4100 4025 4100
-Connection ~ 4025 4100
+	1125 5500 1125 5425
 Wire Wire Line
-	2375 4100 3075 4100
-Connection ~ 2375 4100
+	1125 5425 1325 5425
 Wire Wire Line
-	3075 4100 3075 4000
-Text HLabel 9000 4550 0    60   Input ~ 0
-LED_CONTROLL
+	1325 5425 1325 5500
+Wire Wire Line
+	1325 5500 1775 5500
+Wire Wire Line
+	1600 5275 1600 5350
 $Comp
-L GND #PWR039
-U 1 1 59563916
-P 1850 1800
-F 0 "#PWR039" H 1850 1550 50  0001 C CNN
-F 1 "GND" H 1850 1650 50  0000 C CNN
-F 2 "" H 1850 1800 50  0001 C CNN
-F 3 "" H 1850 1800 50  0001 C CNN
-	1    1850 1800
+L GND #PWR?
+U 1 1 59936F44
+P 2900 6275
+F 0 "#PWR?" H 2900 6025 50  0001 C CNN
+F 1 "GND" H 2900 6125 50  0000 C CNN
+F 2 "" H 2900 6275 50  0001 C CNN
+F 3 "" H 2900 6275 50  0001 C CNN
+	1    2900 6275
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2000 1800 1850 1800
-Wire Wire Line
-	2000 1650 1400 1650
+	2900 5975 2900 6275
 Wire Wire Line
-	1400 1950 1400 2025
+	2575 5350 2900 5350
 Wire Wire Line
-	1400 2025 2000 2025
+	2900 5350 2900 5675
+$Comp
+L C C?
+U 1 1 5993721F
+P 2900 5825
+F 0 "C?" H 2925 5925 50  0000 L CNN
+F 1 "10u" H 2925 5725 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 2938 5675 50  0001 C CNN
+F 3 "" H 2900 5825 50  0001 C CNN
+F 4 "1833812" H 2900 5825 60  0001 C CNN "Farnell"
+	1    2900 5825
+	1    0    0    -1  
+$EndComp
 Wire Wire Line
-	2000 2025 2000 1950
+	2775 5275 2775 5350
+Connection ~ 2775 5350
 $Comp
-L +3.3V #PWR040
-U 1 1 59563EC0
-P 3000 1425
-F 0 "#PWR040" H 3000 1275 50  0001 C CNN
-F 1 "+3.3V" H 3000 1565 50  0000 C CNN
-F 2 "" H 3000 1425 50  0001 C CNN
-F 3 "" H 3000 1425 50  0001 C CNN
-	1    3000 1425
+L C C?
+U 1 1 59937E8F
+P 3275 5650
+F 0 "C?" H 3300 5750 50  0000 L CNN
+F 1 "10u" H 3300 5550 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 3313 5500 50  0001 C CNN
+F 3 "" H 3275 5650 50  0001 C CNN
+F 4 "1833812" H 3275 5650 60  0001 C CNN "Farnell"
+	1    3275 5650
 	1    0    0    -1  
 $EndComp
+$Comp
+L GND #PWR?
+U 1 1 59937EA2
+P 3800 6275
+F 0 "#PWR?" H 3800 6025 50  0001 C CNN
+F 1 "GND" H 3800 6125 50  0000 C CNN
+F 2 "" H 3800 6275 50  0001 C CNN
+F 3 "" H 3800 6275 50  0001 C CNN
+	1    3800 6275
+	1    0    0    -1  
+$EndComp
+NoConn ~ 4725 5500
+$Comp
+L ICL7660S U?
+U 1 1 59937EB1
+P 4325 5350
+F 0 "U?" H 4170 5480 40  0000 C CNN
+F 1 "ICL7660S" H 4450 5480 40  0000 C CNN
+F 2 "SMD_Packages:SOIC-8-N" H 4325 5350 60  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2059962.pdf" H 4325 5350 60  0001 C CNN
+F 4 "1561969" H 4325 5350 60  0001 C CNN "Farnell"
+	1    4325 5350
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3750 5350 3925 5350
 Wire Wire Line
-	3000 1425 3000 1500
+	3925 5650 3800 5650
 Wire Wire Line
-	2800 1500 3125 1500
+	3800 5650 3800 6275
 $Comp
-L C C18
-U 1 1 595644A6
-P 2900 2250
-F 0 "C18" H 2925 2350 50  0000 L CNN
-F 1 "10u" H 2925 2150 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 2938 2100 50  0001 C CNN
-F 3 "" H 2900 2250 50  0001 C CNN
-F 4 "1833812" H 2900 2250 60  0001 C CNN "Farnell"
-	1    2900 2250
+L GND #PWR?
+U 1 1 59937EBB
+P 4800 6275
+F 0 "#PWR?" H 4800 6025 50  0001 C CNN
+F 1 "GND" H 4800 6125 50  0000 C CNN
+F 2 "" H 4800 6275 50  0001 C CNN
+F 3 "" H 4800 6275 50  0001 C CNN
+	1    4800 6275
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2800 1950 2900 1950
+	4725 5650 4800 5650
+Wire Wire Line
+	4800 5650 4800 6275
+Wire Wire Line
+	3275 5800 3275 5875
+Wire Wire Line
+	3275 5875 3475 5875
+Wire Wire Line
+	3475 5875 3475 5800
+Wire Wire Line
+	3475 5800 3925 5800
 Wire Wire Line
-	2900 1950 2900 2100
+	3275 5500 3275 5425
+Wire Wire Line
+	3275 5425 3475 5425
+Wire Wire Line
+	3475 5425 3475 5500
+Wire Wire Line
+	3475 5500 3925 5500
+Wire Wire Line
+	3750 5225 3750 5350
 $Comp
-L GND #PWR041
-U 1 1 5956469D
-P 2900 2425
-F 0 "#PWR041" H 2900 2175 50  0001 C CNN
-F 1 "GND" H 2900 2275 50  0000 C CNN
-F 2 "" H 2900 2425 50  0001 C CNN
-F 3 "" H 2900 2425 50  0001 C CNN
-	1    2900 2425
+L GND #PWR?
+U 1 1 59937ECF
+P 5750 6275
+F 0 "#PWR?" H 5750 6025 50  0001 C CNN
+F 1 "GND" H 5750 6125 50  0000 C CNN
+F 2 "" H 5750 6275 50  0001 C CNN
+F 3 "" H 5750 6275 50  0001 C CNN
+	1    5750 6275
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2900 2400 2900 2425
-Text HLabel 3400 2050 2    60   Output ~ 0
--3.3V
+	5750 5975 5750 6275
+Wire Wire Line
+	4725 5350 5750 5350
 Wire Wire Line
-	2900 2050 3400 2050
-Connection ~ 2900 2050
-NoConn ~ 2800 1650
+	5750 5350 5750 5675
 $Comp
-L C C19
-U 1 1 59565F34
-P 3125 1650
-F 0 "C19" H 3150 1750 50  0000 L CNN
-F 1 "1u" H 3150 1550 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 3163 1500 50  0001 C CNN
-F 3 "" H 3125 1650 50  0000 C CNN
-F 4 "1845751" H 3125 1650 60  0001 C CNN "Farnell"
-	1    3125 1650
+L C C?
+U 1 1 59937EDA
+P 5750 5825
+F 0 "C?" H 5775 5925 50  0000 L CNN
+F 1 "10u" H 5775 5725 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 5788 5675 50  0001 C CNN
+F 3 "" H 5750 5825 50  0001 C CNN
+F 4 "1833812" H 5750 5825 60  0001 C CNN "Farnell"
+	1    5750 5825
 	1    0    0    -1  
 $EndComp
-Connection ~ 3000 1500
-Connection ~ 3000 1800
-Text Notes 3325 1650 0    60   ~ 0
-Place decoupling capacitors close to component!
-$Comp
-L CONN_01X03 P1
-U 1 1 59567D00
-P 1450 1225
-F 0 "P1" H 1450 1425 50  0000 C CNN
-F 1 "CONN_01X03" V 1550 1225 50  0000 C CNN
-F 2 "Samtec Connectors:Samtec-PHT-1-3-01-L-S" H 1450 1225 50  0001 C CNN
-F 3 "" H 1450 1225 50  0000 C CNN
-	1    1450 1225
-	-1   0    0    -1  
+Connection ~ 4925 5350
+$Comp
+L C C?
+U 1 1 59938428
+P 5075 6025
+F 0 "C?" H 5100 6125 50  0000 L CNN
+F 1 "10u" H 5100 5925 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 5113 5875 50  0001 C CNN
+F 3 "" H 5075 6025 50  0001 C CNN
+F 4 "1833812" H 5075 6025 60  0001 C CNN "Farnell"
+	1    5075 6025
+	1    0    0    -1  
 $EndComp
 $Comp
-L +3.3V #PWR042
-U 1 1 595680C2
-P 1825 1125
-F 0 "#PWR042" H 1825 975 50  0001 C CNN
-F 1 "+3.3V" H 1825 1265 50  0000 C CNN
-F 2 "" H 1825 1125 50  0001 C CNN
-F 3 "" H 1825 1125 50  0001 C CNN
-	1    1825 1125
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 599384B9
+P 5075 6275
+F 0 "#PWR?" H 5075 6025 50  0001 C CNN
+F 1 "GND" H 5075 6125 50  0000 C CNN
+F 2 "" H 5075 6275 50  0001 C CNN
+F 3 "" H 5075 6275 50  0001 C CNN
+	1    5075 6275
+	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	1825 1125 1650 1125
-NoConn ~ 1650 1325
-Text Notes 1850 1175 0    60   ~ 0
-Boost pin to make the oscillator faster. Enabled when connected to 3.3 V.
-Text Notes 1375 2825 0    60   ~ 0
-Charge pump to generate -3.3 V.
-Text GLabel 3075 4000 1    60   UnSpc ~ 0
-COIL_1
-Text GLabel 3350 4000 1    60   UnSpc ~ 0
-COIL_2
-Text GLabel 3075 5700 1    60   UnSpc ~ 0
-COIL_3
-Text GLabel 3350 5700 1    60   UnSpc ~ 0
-COIL_4
-$Comp
-L CONN_01X04 J3
-U 1 1 5956B77E
-P 5600 4925
-F 0 "J3" H 5600 5175 50  0000 C CNN
-F 1 "CONN_01X04" V 5700 4925 50  0000 C CNN
-F 2 "China Connectors:LED_CONN_1.25_PITCH" H 5600 4925 50  0001 C CNN
-F 3 "" H 5600 4925 50  0001 C CNN
-	1    5600 4925
+	5075 5800 5075 5875
+Wire Wire Line
+	5075 6175 5075 6275
+Text GLabel 1600 5650 0    60   Output ~ 0
+1.65V
+Connection ~ 1650 5650
+Text GLabel 5200 5800 2    60   Output ~ 0
+-1.65V
+Connection ~ 5075 5800
+Wire Wire Line
+	4725 5800 5200 5800
+Text Notes 4150 6700 0    60   ~ 0
+Voltage Inverter
+Text Notes 1850 6675 0    60   ~ 0
+Voltage Divider
+Text GLabel 3750 5225 1    60   Input ~ 0
+1.65V
+Text GLabel 4925 5225 1    60   Input ~ 0
+1.65V
+Wire Wire Line
+	4925 5225 4925 5350
+$Comp
+L CONN_01X02 J?
+U 1 1 5993B030
+P 7825 4975
+F 0 "J?" H 7825 5125 50  0000 C CNN
+F 1 "CONN_01X02" V 7925 4975 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 7825 4975 50  0001 C CNN
+F 3 "" H 7825 4975 50  0001 C CNN
+	1    7825 4975
 	1    0    0    -1  
 $EndComp
-Text GLabel 5400 4775 0    60   UnSpc ~ 0
-COIL_1
-Text GLabel 5400 4875 0    60   UnSpc ~ 0
-COIL_2
-Text GLabel 5400 4975 0    60   UnSpc ~ 0
-COIL_3
-Text GLabel 5400 5075 0    60   UnSpc ~ 0
-COIL_4
-$Comp
-L TEST GPIO1
-U 1 1 59595C55
-P 1950 3700
-F 0 "GPIO1" H 1950 4000 50  0000 C BNN
-F 1 "TEST" H 1950 3950 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 1950 3700 50  0001 C CNN
-F 3 "" H 1950 3700 50  0000 C CNN
-	1    1950 3700
-	-1   0    0    -1  
-$EndComp
-$Comp
-L TEST GPIO2
-U 1 1 59596119
-P 4450 3700
-F 0 "GPIO2" H 4450 4000 50  0000 C BNN
-F 1 "TEST" H 4450 3950 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 4450 3700 50  0001 C CNN
-F 3 "" H 4450 3700 50  0000 C CNN
-	1    4450 3700
-	-1   0    0    -1  
-$EndComp
 $Comp
-L TEST GPIO3
-U 1 1 59596260
-P 1950 5400
-F 0 "GPIO3" H 1950 5700 50  0000 C BNN
-F 1 "TEST" H 1950 5650 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 1950 5400 50  0001 C CNN
-F 3 "" H 1950 5400 50  0000 C CNN
-	1    1950 5400
+L CONN_01X02 J?
+U 1 1 5993B101
+P 8175 4975
+F 0 "J?" H 8175 5125 50  0000 C CNN
+F 1 "CONN_01X02" V 8275 4975 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 8175 4975 50  0001 C CNN
+F 3 "" H 8175 4975 50  0001 C CNN
+	1    8175 4975
 	-1   0    0    -1  
 $EndComp
-$Comp
-L TEST GPIO4
-U 1 1 5959632C
-P 4450 5400
-F 0 "GPIO4" H 4450 5700 50  0000 C BNN
-F 1 "TEST" H 4450 5650 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 4450 5400 50  0001 C CNN
-F 3 "" H 4450 5400 50  0000 C CNN
-	1    4450 5400
-	-1   0    0    -1  
-$EndComp
-$Comp
-L TEST 3V3
-U 1 1 59596507
-P 3250 2150
-F 0 "3V3" H 3250 2450 50  0000 C BNN
-F 1 "TEST" H 3250 2400 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 3250 2150 50  0001 C CNN
-F 3 "" H 3250 2150 50  0000 C CNN
-	1    3250 2150
-	1    0    0    1   
-$EndComp
-Wire Wire Line
-	3250 2150 3250 2050
-Connection ~ 3250 2050
-Connection ~ 4450 3775
-Connection ~ 1950 3775
-Connection ~ 4450 5475
-Connection ~ 1950 5475
-$Comp
-L ICL7660S U3
-U 1 1 5956AD62
-P 2400 1500
-F 0 "U3" H 2245 1630 40  0000 C CNN
-F 1 "ICL7660S" H 2525 1630 40  0000 C CNN
-F 2 "SMD_Packages:SOIC-8-N" H 2400 1500 60  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2059962.pdf" H 2400 1500 60  0001 C CNN
-F 4 "1561969" H 2400 1500 60  0001 C CNN "Farnell"
-	1    2400 1500
+Text GLabel 7625 5025 0    60   Input ~ 0
+1.65V
+$Comp
+L +3.3V #PWR?
+U 1 1 5993B52B
+P 7325 4850
+F 0 "#PWR?" H 7325 4700 50  0001 C CNN
+F 1 "+3.3V" H 7325 4990 50  0000 C CNN
+F 2 "" H 7325 4850 50  0001 C CNN
+F 3 "" H 7325 4850 50  0001 C CNN
+	1    7325 4850
 	1    0    0    -1  
 $EndComp
-$Comp
-L C C23
-U 1 1 5956BF7A
-P 9375 2050
-F 0 "C23" H 9400 2150 50  0000 L CNN
-F 1 "100n" H 9400 1950 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 9413 1900 50  0001 C CNN
-F 3 "" H 9375 2050 50  0000 C CNN
-F 4 "499687" H 9375 2050 60  0001 C CNN "Farnell"
-	1    9375 2050
-	0    1    1    0   
-$EndComp
 Wire Wire Line
-	1650 1225 1825 1225
+	7325 4925 7625 4925
 Wire Wire Line
-	1825 1225 1825 1500
+	7325 4850 7325 4925
+Text HLabel 8525 4925 2    60   Output ~ 0
+V_SENS_POS
 Wire Wire Line
-	1825 1500 2000 1500
-Text Notes 8325 1200 0    60   ~ 0
-Low-pass has a cut-off freq. of approx. 1.6 Hz, ergo DC.
-$Comp
-L +3.3V #PWR043
-U 1 1 595BE0DA
-P 8150 1525
-F 0 "#PWR043" H 8150 1375 50  0001 C CNN
-F 1 "+3.3V" H 8150 1665 50  0000 C CNN
-F 2 "" H 8150 1525 50  0001 C CNN
-F 3 "" H 8150 1525 50  0001 C CNN
-	1    8150 1525
-	-1   0    0    -1  
-$EndComp
+	8525 4925 8375 4925
+Wire Wire Line
+	8375 5025 8450 5025
+Wire Wire Line
+	8450 5025 8450 4925
+Connection ~ 8450 4925
 $Comp
-L Q_NMOS_GSD Q4
-U 1 1 59557415
-P 2275 6125
-F 0 "Q4" H 2475 6175 50  0000 L CNN
-F 1 "TSM2314" H 2475 6075 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 6225 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 2275 6125 50  0001 C CNN
-F 4 "1864589" H 2275 6125 60  0001 C CNN "Farnell"
-	1    2275 6125
+L CONN_01X02 J?
+U 1 1 5993FBA5
+P 7800 5625
+F 0 "J?" H 7800 5775 50  0000 C CNN
+F 1 "CONN_01X02" V 7900 5625 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 7800 5625 50  0001 C CNN
+F 3 "" H 7800 5625 50  0001 C CNN
+	1    7800 5625
 	1    0    0    -1  
 $EndComp
 $Comp
-L Q_NMOS_GSD Q8
-U 1 1 59558B41
-P 4125 6125
-F 0 "Q8" H 4325 6175 50  0000 L CNN
-F 1 "TSM2314" H 4325 6075 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 6225 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 4125 6125 50  0001 C CNN
-F 4 "1864589" H 4125 6125 60  0001 C CNN "Farnell"
-	1    4125 6125
+L CONN_01X02 J?
+U 1 1 5993FBAB
+P 8150 5625
+F 0 "J?" H 8150 5775 50  0000 C CNN
+F 1 "CONN_01X02" V 8250 5625 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 8150 5625 50  0001 C CNN
+F 3 "" H 8150 5625 50  0001 C CNN
+	1    8150 5625
 	-1   0    0    -1  
 $EndComp
+Text HLabel 8500 5575 2    60   Output ~ 0
+V_SENS_NEG
+Wire Wire Line
+	8500 5575 8350 5575
+Wire Wire Line
+	8350 5675 8425 5675
+Wire Wire Line
+	8425 5675 8425 5575
+Connection ~ 8425 5575
+Text GLabel 7600 5575 0    60   Input ~ 0
+-1.65V
 $Comp
-L Q_NMOS_GSD Q6
-U 1 1 5956294D
-P 4125 4425
-F 0 "Q6" H 4325 4475 50  0000 L CNN
-F 1 "TSM2314" H 4325 4375 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 4525 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 4125 4425 50  0001 C CNN
-F 4 "1864589" H 4125 4425 60  0001 C CNN "Farnell"
-	1    4125 4425
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 5993FFC9
+P 7225 5725
+F 0 "#PWR?" H 7225 5475 50  0001 C CNN
+F 1 "GND" H 7225 5575 50  0000 C CNN
+F 2 "" H 7225 5725 50  0001 C CNN
+F 3 "" H 7225 5725 50  0001 C CNN
+	1    7225 5725
+	1    0    0    -1  
 $EndComp
-Text Notes 5550 3700 0    60   ~ 0
-Investigate if AD8616 here can be replaced by the LM358 (most likely yes, footprints match). 
+Wire Wire Line
+	7225 5725 7225 5675
+Wire Wire Line
+	7225 5675 7600 5675
 $EndSCHEMATC
diff --git a/pcbs/analog_board_v0.22/highCurrentPart.sch b/pcbs/analog_board_v0.22/highCurrentPart.sch
index 753a4f2..ef3c5d8 100644
--- a/pcbs/analog_board_v0.22/highCurrentPart.sch
+++ b/pcbs/analog_board_v0.22/highCurrentPart.sch
@@ -40,8 +40,8 @@ $Descr A4 11693 8268
 encoding utf-8
 Sheet 4 4
 Title "High Current Part of Analog Board"
-Date "2017-07-05"
-Rev "v0.2"
+Date "2017-08-15"
+Rev "v0.3"
 Comp "UppSense Heart Failure Diagnostics"
 Comment1 ""
 Comment2 ""
@@ -49,944 +49,736 @@ Comment3 ""
 Comment4 ""
 $EndDescr
 $Comp
-L GND #PWR020
-U 1 1 5940A4E3
-P 8150 3325
-F 0 "#PWR020" H 8150 3075 50  0001 C CNN
-F 1 "GND" H 8150 3175 50  0000 C CNN
-F 2 "" H 8150 3325 50  0000 C CNN
-F 3 "" H 8150 3325 50  0000 C CNN
-	1    8150 3325
-	1    0    0    -1  
-$EndComp
-$Comp
-L AD8616 U4
-U 1 1 5940A4EA
-P 8150 2650
-F 0 "U4" H 7529 2354 50  0000 L CNN
-F 1 "AD8616" H 8450 2350 50  0000 L CNN
-F 2 "SMD_Packages:SOIC-8-N" H 7953 2700 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/1841629.pdf" H 7853 2800 50  0001 C CNN
-F 4 "1581952" H 8150 2650 60  0001 C CNN "Farnell"
-	1    8150 2650
-	1    0    0    -1  
-$EndComp
-$Comp
 L R R13
 U 1 1 5940A522
-P 9375 2350
-F 0 "R13" V 9455 2350 50  0000 C CNN
-F 1 "1M" V 9375 2350 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 9305 2350 50  0001 C CNN
-F 3 "" H 9375 2350 50  0000 C CNN
-F 4 "1576507" V 9375 2350 60  0001 C CNN "Farnell"
-	1    9375 2350
+P 7675 2575
+F 0 "R13" V 7755 2575 50  0000 C CNN
+F 1 "1M" V 7675 2575 50  0000 C CNN
+F 2 "Resistors_SMD:R_0805" V 7605 2575 50  0001 C CNN
+F 3 "" H 7675 2575 50  0000 C CNN
+F 4 "1576507" V 7675 2575 60  0001 C CNN "Farnell"
+	1    7675 2575
 	0    1    -1   0   
 $EndComp
 $Comp
 L D_Photo D3
 U 1 1 5940A54D
-P 9725 3025
-F 0 "D3" H 9745 3095 50  0000 L CNN
-F 1 "BPW34" H 9685 2915 50  0000 C CNN
-F 2 "Photodiodes:BPW34FA" H 9675 3025 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2046123.pdf" H 9675 3025 50  0001 C CNN
-F 4 "1045425" H 9725 3025 60  0001 C CNN "Farnell"
-	1    9725 3025
+P 8450 3425
+F 0 "D3" H 8470 3495 50  0000 L CNN
+F 1 "BPW34" H 8410 3315 50  0000 C CNN
+F 2 "Photodiodes:BPW34FA" H 8400 3425 50  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2046123.pdf" H 8400 3425 50  0001 C CNN
+F 4 "1045425" H 8450 3425 60  0001 C CNN "Farnell"
+	1    8450 3425
 	0    -1   1    0   
 $EndComp
 $Comp
-L GND #PWR021
-U 1 1 5940A554
-P 9725 3325
-F 0 "#PWR021" H 9725 3075 50  0001 C CNN
-F 1 "GND" H 9725 3175 50  0000 C CNN
-F 2 "" H 9725 3325 50  0000 C CNN
-F 3 "" H 9725 3325 50  0000 C CNN
-	1    9725 3325
-	-1   0    0    -1  
-$EndComp
-Wire Wire Line
-	8900 2350 9225 2350
-Wire Wire Line
-	8150 3200 8150 3325
-$Comp
 L LED D2
 U 1 1 5940A5C4
-P 6775 1900
-F 0 "D2" H 6775 2000 50  0000 C CNN
-F 1 "LED" H 6775 1800 50  0000 C CNN
-F 2 "LEDs:LED_D5.0mm" H 6775 1900 50  0001 C CNN
-F 3 "" H 6775 1900 50  0000 C CNN
-	1    6775 1900
+P 4300 2250
+F 0 "D2" H 4300 2350 50  0000 C CNN
+F 1 "LED" H 4300 2150 50  0000 C CNN
+F 2 "LEDs:LED_D5.0mm" H 4300 2250 50  0001 C CNN
+F 3 "" H 4300 2250 50  0000 C CNN
+	1    4300 2250
 	0    -1   -1   0   
 $EndComp
 $Comp
-L POT RV1
-U 1 1 5940A5CC
-P 7900 3925
-F 0 "RV1" V 7725 3925 50  0000 C CNN
-F 1 "T73YE103KT20" V 7800 3925 50  0000 C CNN
-F 2 "MyPotis:Vishay_T73YE103KT20" H 7900 3925 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2243711.pdf" H 7900 3925 50  0001 C CNN
-F 4 "2550676" V 7900 3925 60  0001 C CNN "Farnell"
-	1    7900 3925
-	0    1    1    0   
-$EndComp
-$Comp
 L R R9
 U 1 1 5940A5D3
-P 6775 3075
-F 0 "R9" V 6855 3075 50  0000 C CNN
-F 1 "100R" V 6775 3075 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 6705 3075 50  0001 C CNN
-F 3 "" H 6775 3075 50  0000 C CNN
-F 4 "1632456" V 6775 3075 60  0001 C CNN "Farnell"
-	1    6775 3075
+P 4300 3300
+F 0 "R9" V 4380 3300 50  0000 C CNN
+F 1 "100R" V 4300 3300 50  0000 C CNN
+F 2 "Resistors_SMD:R_0805" V 4230 3300 50  0001 C CNN
+F 3 "" H 4300 3300 50  0000 C CNN
+F 4 "1632456" V 4300 3300 60  0001 C CNN "Farnell"
+	1    4300 3300
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	6775 2550 6775 2925
-Wire Wire Line
-	6775 2050 6775 2150
 $Comp
 L +5V #PWR022
 U 1 1 5940A5DC
-P 6775 1675
-F 0 "#PWR022" H 6775 1525 50  0001 C CNN
-F 1 "+5V" H 6775 1815 50  0000 C CNN
-F 2 "" H 6775 1675 50  0000 C CNN
-F 3 "" H 6775 1675 50  0000 C CNN
-	1    6775 1675
+P 4300 2025
+F 0 "#PWR022" H 4300 1875 50  0001 C CNN
+F 1 "+5V" H 4300 2165 50  0000 C CNN
+F 2 "" H 4300 2025 50  0000 C CNN
+F 3 "" H 4300 2025 50  0000 C CNN
+	1    4300 2025
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	6775 1675 6775 1750
 $Comp
 L GND #PWR023
 U 1 1 5940A5E4
-P 6775 3350
-F 0 "#PWR023" H 6775 3100 50  0001 C CNN
-F 1 "GND" H 6775 3200 50  0000 C CNN
-F 2 "" H 6775 3350 50  0000 C CNN
-F 3 "" H 6775 3350 50  0000 C CNN
-	1    6775 3350
-	1    0    0    -1  
+P 5400 2925
+F 0 "#PWR023" H 5400 2675 50  0001 C CNN
+F 1 "GND" H 5400 2775 50  0000 C CNN
+F 2 "" H 5400 2925 50  0000 C CNN
+F 3 "" H 5400 2925 50  0000 C CNN
+	1    5400 2925
+	-1   0    0    1   
 $EndComp
-Wire Wire Line
-	6775 3225 6775 3350
 $Comp
 L MMBT3904 Q9
 U 1 1 5940A5EB
-P 6875 2350
-F 0 "Q9" H 7075 2425 50  0000 L CNN
-F 1 "MMBT3904" H 7075 2350 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 7075 2275 50  0001 L CIN
-F 3 "https://www.fairchildsemi.com/datasheets/MM/MMBT3904.pdf" H 6875 2350 50  0001 L CNN
-F 4 "1757935" H 6875 2350 60  0001 C CNN "Farnell"
-	1    6875 2350
+P 4400 2675
+F 0 "Q9" H 4600 2750 50  0000 L CNN
+F 1 "MMBT3904" H 4600 2675 50  0000 L CNN
+F 2 "TO_SOT_Packages_SMD:SOT-23" H 4600 2600 50  0001 L CIN
+F 3 "https://www.fairchildsemi.com/datasheets/MM/MMBT3904.pdf" H 4400 2675 50  0001 L CNN
+F 4 "1757935" H 4400 2675 60  0001 C CNN "Farnell"
+	1    4400 2675
 	-1   0    0    -1  
 $EndComp
-Wire Wire Line
-	9725 3125 9725 3325
-Wire Wire Line
-	7075 2350 7350 2350
-Text GLabel 7350 2750 0    60   Input ~ 0
+Text GLabel 4875 3325 0    60   Input ~ 0
 Signal
-$Comp
-L GND #PWR024
-U 1 1 5940A601
-P 7675 3925
-F 0 "#PWR024" H 7675 3675 50  0001 C CNN
-F 1 "GND" H 7675 3775 50  0000 C CNN
-F 2 "" H 7675 3925 50  0000 C CNN
-F 3 "" H 7675 3925 50  0000 C CNN
-	1    7675 3925
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	8100 3925 8050 3925
-Wire Wire Line
-	7750 3925 7675 3925
-Text GLabel 9825 4450 2    60   Output ~ 0
+Text GLabel 5150 4150 2    60   Output ~ 0
 Signal
 $Comp
-L +5V #PWR025
-U 1 1 5940A60A
-P 8450 3925
-F 0 "#PWR025" H 8450 3775 50  0001 C CNN
-F 1 "+5V" H 8450 4065 50  0000 C CNN
-F 2 "" H 8450 3925 50  0000 C CNN
-F 3 "" H 8450 3925 50  0000 C CNN
-	1    8450 3925
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	8450 3925 8400 3925
-Wire Wire Line
-	6900 2550 7350 2550
-Wire Wire Line
-	6775 2775 6900 2775
-Wire Wire Line
-	6900 2775 6900 2550
-Connection ~ 6775 2775
-$Comp
-L GND #PWR026
-U 1 1 5940EF10
-P 8900 3325
-F 0 "#PWR026" H 8900 3075 50  0001 C CNN
-F 1 "GND" H 8900 3175 50  0000 C CNN
-F 2 "" H 8900 3325 50  0000 C CNN
-F 3 "" H 8900 3325 50  0000 C CNN
-	1    8900 3325
-	-1   0    0    -1  
-$EndComp
-Wire Wire Line
-	8900 2750 8900 3325
-$Comp
 L C C20
 U 1 1 594122D8
-P 7350 1750
-F 0 "C20" H 7375 1850 50  0000 L CNN
-F 1 "1u" H 7375 1650 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 7388 1600 50  0001 C CNN
-F 3 "" H 7350 1750 50  0000 C CNN
-F 4 "2496946" H 7350 1750 60  0001 C CNN "Farnell"
-	1    7350 1750
+P 5900 1250
+F 0 "C20" H 5925 1350 50  0000 L CNN
+F 1 "1u" H 5925 1150 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 5938 1100 50  0001 C CNN
+F 3 "" H 5900 1250 50  0000 C CNN
+F 4 "2496946" H 5900 1250 60  0001 C CNN "Farnell"
+	1    5900 1250
 	1    0    0    -1  
 $EndComp
 $Comp
 L C C21
 U 1 1 594122E0
-P 7600 1750
-F 0 "C21" H 7625 1850 50  0000 L CNN
-F 1 "100n" H 7625 1650 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 7638 1600 50  0001 C CNN
-F 3 "" H 7600 1750 50  0000 C CNN
-F 4 "499687" H 7600 1750 60  0001 C CNN "Farnell"
-	1    7600 1750
+P 6150 1250
+F 0 "C21" H 6175 1350 50  0000 L CNN
+F 1 "100n" H 6175 1150 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 6188 1100 50  0001 C CNN
+F 3 "" H 6150 1250 50  0000 C CNN
+F 4 "499687" H 6150 1250 60  0001 C CNN "Farnell"
+	1    6150 1250
 	1    0    0    -1  
 $EndComp
 $Comp
 L C C22
 U 1 1 594122E8
-P 7850 1750
-F 0 "C22" H 7875 1850 50  0000 L CNN
-F 1 "10n" H 7875 1650 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 7888 1600 50  0001 C CNN
-F 3 "" H 7850 1750 50  0000 C CNN
-F 4 "1414662" H 7850 1750 60  0001 C CNN "Farnell"
-	1    7850 1750
+P 6400 1250
+F 0 "C22" H 6425 1350 50  0000 L CNN
+F 1 "10n" H 6425 1150 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 6438 1100 50  0001 C CNN
+F 3 "" H 6400 1250 50  0000 C CNN
+F 4 "1414662" H 6400 1250 60  0001 C CNN "Farnell"
+	1    6400 1250
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	7350 1600 8150 1600
-Connection ~ 7600 1600
+	5900 1100 6700 1100
+Connection ~ 6150 1100
 $Comp
 L GND #PWR027
 U 1 1 594122F3
-P 7350 1975
-F 0 "#PWR027" H 7350 1725 50  0001 C CNN
-F 1 "GND" H 7350 1825 50  0000 C CNN
-F 2 "" H 7350 1975 50  0000 C CNN
-F 3 "" H 7350 1975 50  0000 C CNN
-	1    7350 1975
+P 5900 1475
+F 0 "#PWR027" H 5900 1225 50  0001 C CNN
+F 1 "GND" H 5900 1325 50  0000 C CNN
+F 2 "" H 5900 1475 50  0000 C CNN
+F 3 "" H 5900 1475 50  0000 C CNN
+	1    5900 1475
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	7350 1900 7350 1975
+	5900 1400 5900 1475
 Wire Wire Line
-	7350 1900 7850 1900
-Connection ~ 7600 1900
-Text Notes 5725 1450 0    60   ~ 0
+	5900 1400 6400 1400
+Connection ~ 6150 1400
+Text Notes 5300 725  0    60   ~ 0
 Place decoupling capacitors close to component!
+Text HLabel 6825 3225 0    60   Output ~ 0
+BPW34_OUT
+Connection ~ 6400 1100
+Text HLabel 4950 4150 0    60   Input ~ 0
+LED_CONTROLL
 $Comp
-L CONN_01X03 P3
-U 1 1 5941362B
-P 9525 4450
-F 0 "P3" H 9525 4650 50  0000 C CNN
-F 1 "CONN_01X03" V 9625 4450 50  0000 C CNN
-F 2 "Samtec Connectors:Samtec-PHT-1-3-01-L-S" H 9525 4450 50  0001 C CNN
-F 3 "" H 9525 4450 50  0000 C CNN
-	1    9525 4450
-	-1   0    0    -1  
-$EndComp
-$Comp
-L CONN_01X03 P2
-U 1 1 59416658
-P 9200 4450
-F 0 "P2" H 9200 4650 50  0000 C CNN
-F 1 "CONN_01X03" V 9300 4450 50  0000 C CNN
-F 2 "Samtec Connectors:Samtec-PHT-1-3-01-L-S" H 9200 4450 50  0001 C CNN
-F 3 "" H 9200 4450 50  0000 C CNN
-	1    9200 4450
-	1    0    0    -1  
+L C C23
+U 1 1 5956BF7A
+P 7675 2200
+F 0 "C23" H 7700 2300 50  0000 L CNN
+F 1 "100n" H 7700 2100 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 7713 2050 50  0001 C CNN
+F 3 "" H 7675 2200 50  0000 C CNN
+F 4 "499687" H 7675 2200 60  0001 C CNN "Farnell"
+	1    7675 2200
+	0    1    1    0   
 $EndComp
-Wire Wire Line
-	9725 4225 9725 4550
-Connection ~ 9725 4450
-Wire Wire Line
-	9725 4450 9825 4450
+Text Notes 6375 1975 0    60   ~ 0
+Low-pass has a cut-off freq. of approx. 1.6 Hz, ergo DC.
 $Comp
-L TEST SIG1
-U 1 1 594174AB
-P 9725 4225
-F 0 "SIG1" H 9725 4525 50  0000 C BNN
-F 1 "TEST" H 9725 4475 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 9725 4225 50  0001 C CNN
-F 3 "" H 9725 4225 50  0000 C CNN
-	1    9725 4225
+L +3.3V #PWR043
+U 1 1 595BE0DA
+P 6700 1025
+F 0 "#PWR043" H 6700 875 50  0001 C CNN
+F 1 "+3.3V" H 6700 1165 50  0000 C CNN
+F 2 "" H 6700 1025 50  0001 C CNN
+F 3 "" H 6700 1025 50  0001 C CNN
+	1    6700 1025
 	-1   0    0    -1  
 $EndComp
-Connection ~ 9725 4350
-$Comp
-L R R10
-U 1 1 59417DE3
-P 8250 3925
-F 0 "R10" V 8330 3925 50  0000 C CNN
-F 1 "100k" V 8250 3925 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 8180 3925 50  0001 C CNN
-F 3 "" H 8250 3925 50  0000 C CNN
-F 4 "2447551" V 8250 3925 60  0001 C CNN "Farnell"
-	1    8250 3925
-	0    1    1    0   
-$EndComp
 $Comp
-L R R11
-U 1 1 59417DEB
-P 8450 4125
-F 0 "R11" V 8530 4125 50  0000 C CNN
-F 1 "10k" V 8450 4125 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 8380 4125 50  0001 C CNN
-F 3 "" H 8450 4125 50  0000 C CNN
-F 4 "9237755" V 8450 4125 60  0001 C CNN "Farnell"
-	1    8450 4125
-	0    1    1    0   
+L LM358 U?
+U 1 1 5992FDFB
+P 7525 3225
+F 0 "U?" H 7525 3425 50  0000 L CNN
+F 1 "LM358" H 7525 3025 50  0000 L CNN
+F 2 "SMD_Packages:SOIC-8-N" H 7525 3225 50  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2000357.pdf" H 7525 3225 50  0001 C CNN
+F 4 "1564331" H 7525 3225 60  0001 C CNN "Farnell"
+	1    7525 3225
+	-1   0    0    1   
 $EndComp
+Wire Wire Line
+	6700 1100 6700 1025
 $Comp
-L R R12
-U 1 1 594182DF
-P 8900 4125
-F 0 "R12" V 8980 4125 50  0000 C CNN
-F 1 "100k" V 8900 4125 50  0000 C CNN
-F 2 "Resistors_SMD:R_0805" V 8830 4125 50  0001 C CNN
-F 3 "" H 8900 4125 50  0000 C CNN
-F 4 "2447551" V 8900 4125 60  0001 C CNN "Farnell"
-	1    8900 4125
-	0    1    1    0   
+L GND #PWR?
+U 1 1 599308E2
+P 7625 3700
+F 0 "#PWR?" H 7625 3450 50  0001 C CNN
+F 1 "GND" H 7625 3550 50  0000 C CNN
+F 2 "" H 7625 3700 50  0000 C CNN
+F 3 "" H 7625 3700 50  0000 C CNN
+	1    7625 3700
+	1    0    0    -1  
 $EndComp
 $Comp
-L +5V #PWR028
-U 1 1 5941842E
-P 9075 4125
-F 0 "#PWR028" H 9075 3975 50  0001 C CNN
-F 1 "+5V" H 9075 4265 50  0000 C CNN
-F 2 "" H 9075 4125 50  0000 C CNN
-F 3 "" H 9075 4125 50  0000 C CNN
-	1    9075 4125
-	1    0    0    -1  
+L +3.3V #PWR?
+U 1 1 599309A5
+P 7625 2925
+F 0 "#PWR?" H 7625 2775 50  0001 C CNN
+F 1 "+3.3V" H 7625 3065 50  0000 C CNN
+F 2 "" H 7625 2925 50  0001 C CNN
+F 3 "" H 7625 2925 50  0001 C CNN
+	1    7625 2925
+	-1   0    0    -1  
 $EndComp
 Wire Wire Line
-	9075 4125 9050 4125
+	7000 2200 7000 3225
 Wire Wire Line
-	8600 4125 8750 4125
-$Comp
-L GND #PWR029
-U 1 1 5941869D
-P 8225 4125
-F 0 "#PWR029" H 8225 3875 50  0001 C CNN
-F 1 "GND" H 8225 3975 50  0000 C CNN
-F 2 "" H 8225 4125 50  0000 C CNN
-F 3 "" H 8225 4125 50  0000 C CNN
-	1    8225 4125
-	1    0    0    -1  
-$EndComp
+	6825 3225 7225 3225
 Wire Wire Line
-	8300 4125 8225 4125
+	8450 3125 7825 3125
 Wire Wire Line
-	8675 4125 8675 4350
+	7825 2575 8450 2575
 Wire Wire Line
-	8675 4350 9000 4350
-Connection ~ 8675 4125
+	8450 2200 8450 3225
+Connection ~ 8450 3125
 Wire Wire Line
-	7900 4075 7900 4450
+	7525 2575 7000 2575
 Wire Wire Line
-	7900 4450 9000 4450
-Text Notes 6425 5175 0    60   ~ 0
-Constant current source with 100R sensing resistor. Monitoring diode included\nwith 1uA being translated into 1V.\n
-Text Notes 8650 3800 0    60   ~ 0
-Constant current with ca. 4.55 mA.
-Text HLabel 9000 1875 1    60   Output ~ 0
-BPW34_OUT
+	7525 2200 7000 2200
+Connection ~ 7000 2575
+Wire Wire Line
+	7825 2200 8450 2200
+Connection ~ 8450 2575
 $Comp
-L GND #PWR030
-U 1 1 59553CC6
-P 3000 1800
-F 0 "#PWR030" H 3000 1550 50  0001 C CNN
-F 1 "GND" H 3000 1650 50  0000 C CNN
-F 2 "" H 3000 1800 50  0001 C CNN
-F 3 "" H 3000 1800 50  0001 C CNN
-	1    3000 1800
+L GND #PWR?
+U 1 1 5993156D
+P 8450 3700
+F 0 "#PWR?" H 8450 3450 50  0001 C CNN
+F 1 "GND" H 8450 3550 50  0000 C CNN
+F 2 "" H 8450 3700 50  0000 C CNN
+F 3 "" H 8450 3700 50  0000 C CNN
+	1    8450 3700
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2800 1800 3125 1800
+	8450 3700 8450 3525
+Wire Wire Line
+	7625 3525 7625 3700
 $Comp
-L C C17
-U 1 1 5955413D
-P 1400 1800
-F 0 "C17" H 1425 1900 50  0000 L CNN
-F 1 "10u" H 1425 1700 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 1438 1650 50  0001 C CNN
-F 3 "" H 1400 1800 50  0001 C CNN
-F 4 "1833812" H 1400 1800 60  0001 C CNN "Farnell"
-	1    1400 1800
+L GND #PWR?
+U 1 1 5993166E
+P 8025 3700
+F 0 "#PWR?" H 8025 3450 50  0001 C CNN
+F 1 "GND" H 8025 3550 50  0000 C CNN
+F 2 "" H 8025 3700 50  0000 C CNN
+F 3 "" H 8025 3700 50  0000 C CNN
+	1    8025 3700
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	9725 2550 8900 2550
+	7825 3325 8025 3325
 Wire Wire Line
-	9725 2050 9725 2825
+	8025 3325 8025 3700
+Connection ~ 7000 3225
 Wire Wire Line
-	9725 2350 9525 2350
-Connection ~ 9725 2550
+	5800 3225 6000 3225
 Wire Wire Line
-	9000 2050 9225 2050
+	6000 3225 6000 2675
 Wire Wire Line
-	9000 1875 9000 2350
-Connection ~ 9000 2350
+	6000 2675 4600 2675
 Wire Wire Line
-	9525 2050 9725 2050
-Connection ~ 9725 2350
-Connection ~ 9000 2050
-$Comp
-L Q_PMOS_GSD Q3
-U 1 1 59556D86
-P 2275 5475
-F 0 "Q3" H 2475 5525 50  0000 L CNN
-F 1 "DMP2035U" H 2475 5425 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 5575 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 2275 5475 50  0001 C CNN
-F 4 "2061419" H 2275 5475 60  0001 C CNN "Farnell"
-	1    2275 5475
-	1    0    0    1   
-$EndComp
+	4300 2875 4300 3150
+Wire Wire Line
+	5200 3125 4300 3125
+Connection ~ 4300 3125
 Wire Wire Line
-	2375 5675 2375 5925
+	4300 2025 4300 2125
 $Comp
-L GND #PWR031
-U 1 1 59557860
-P 2375 6425
-F 0 "#PWR031" H 2375 6175 50  0001 C CNN
-F 1 "GND" H 2375 6275 50  0000 C CNN
-F 2 "" H 2375 6425 50  0000 C CNN
-F 3 "" H 2375 6425 50  0000 C CNN
-	1    2375 6425
+L GND #PWR?
+U 1 1 59933226
+P 4300 3675
+F 0 "#PWR?" H 4300 3425 50  0001 C CNN
+F 1 "GND" H 4300 3525 50  0000 C CNN
+F 2 "" H 4300 3675 50  0000 C CNN
+F 3 "" H 4300 3675 50  0000 C CNN
+	1    4300 3675
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2375 6325 2375 6425
+	4300 3450 4300 3675
 $Comp
-L +5V #PWR032
-U 1 1 59557DF9
-P 2375 5200
-F 0 "#PWR032" H 2375 5050 50  0001 C CNN
-F 1 "+5V" H 2375 5340 50  0000 C CNN
-F 2 "" H 2375 5200 50  0000 C CNN
-F 3 "" H 2375 5200 50  0000 C CNN
-	1    2375 5200
-	1    0    0    -1  
+L +3.3V #PWR?
+U 1 1 5993334C
+P 5400 3525
+F 0 "#PWR?" H 5400 3375 50  0001 C CNN
+F 1 "+3.3V" H 5400 3665 50  0000 C CNN
+F 2 "" H 5400 3525 50  0001 C CNN
+F 3 "" H 5400 3525 50  0001 C CNN
+	1    5400 3525
+	1    0    0    1   
 $EndComp
 Wire Wire Line
-	2375 5200 2375 5275
-Wire Wire Line
-	2075 5475 1950 5475
-Wire Wire Line
-	1950 5400 1950 6125
-Wire Wire Line
-	1950 6125 2075 6125
-Text HLabel 1875 5800 0    60   Input ~ 0
-GPIO_COIL_3
+	4300 2400 4300 2475
+$Comp
+L R R?
+U 1 1 599338A5
+P 5025 3525
+F 0 "R?" V 5105 3525 50  0000 C CNN
+F 1 "10k" V 5025 3525 50  0000 C CNN
+F 2 "Resistors_SMD:R_0805" V 4955 3525 50  0001 C CNN
+F 3 "" H 5025 3525 50  0000 C CNN
+F 4 "9237755" V 5025 3525 60  0001 C CNN "Farnell"
+	1    5025 3525
+	-1   0    0    1   
+$EndComp
 Wire Wire Line
-	1875 5800 1950 5800
-Connection ~ 1950 5800
+	4875 3325 5200 3325
 Wire Wire Line
-	4025 5675 4025 5925
+	5025 3325 5025 3375
+Connection ~ 5025 3325
 $Comp
-L GND #PWR033
-U 1 1 59558304
-P 4025 6425
-F 0 "#PWR033" H 4025 6175 50  0001 C CNN
-F 1 "GND" H 4025 6275 50  0000 C CNN
-F 2 "" H 4025 6425 50  0000 C CNN
-F 3 "" H 4025 6425 50  0000 C CNN
-	1    4025 6425
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 59933D3E
+P 5025 3675
+F 0 "#PWR?" H 5025 3425 50  0001 C CNN
+F 1 "GND" H 5025 3525 50  0000 C CNN
+F 2 "" H 5025 3675 50  0000 C CNN
+F 3 "" H 5025 3675 50  0000 C CNN
+	1    5025 3675
+	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	4025 6325 4025 6425
 $Comp
-L +5V #PWR034
-U 1 1 5955830B
-P 4025 5200
-F 0 "#PWR034" H 4025 5050 50  0001 C CNN
-F 1 "+5V" H 4025 5340 50  0000 C CNN
-F 2 "" H 4025 5200 50  0000 C CNN
-F 3 "" H 4025 5200 50  0000 C CNN
-	1    4025 5200
-	-1   0    0    -1  
+L LM358 U?
+U 2 1 599346AA
+P 5500 3225
+F 0 "U?" H 5500 3425 50  0000 L CNN
+F 1 "LM358" H 5500 3025 50  0000 L CNN
+F 2 "SMD_Packages:SOIC-8-N" H 5500 3225 50  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2000357.pdf" H 5500 3225 50  0001 C CNN
+F 4 "1564331" H 5500 3225 60  0001 C CNN "Farnell"
+	2    5500 3225
+	1    0    0    1   
 $EndComp
 Wire Wire Line
-	4025 5200 4025 5275
-Wire Wire Line
-	4325 5475 4450 5475
-Wire Wire Line
-	4450 5400 4450 6125
-Wire Wire Line
-	4450 6125 4325 6125
-Text HLabel 4525 5800 2    60   Input ~ 0
-GPIO_COIL_4
-Wire Wire Line
-	4525 5800 4450 5800
-Connection ~ 4450 5800
+	4950 4150 5150 4150
 $Comp
-L Q_PMOS_GSD Q7
-U 1 1 5955D522
-P 4125 5475
-F 0 "Q7" H 4325 5525 50  0000 L CNN
-F 1 "DMP2035U" H 4325 5425 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 5575 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 4125 5475 50  0001 C CNN
-F 4 "2061419" H 4125 5475 60  0001 C CNN "Farnell"
-	1    4125 5475
-	-1   0    0    1   
+L C C?
+U 1 1 59935E81
+P 1125 5650
+F 0 "C?" H 1150 5750 50  0000 L CNN
+F 1 "10u" H 1150 5550 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 1163 5500 50  0001 C CNN
+F 3 "" H 1125 5650 50  0001 C CNN
+F 4 "1833812" H 1125 5650 60  0001 C CNN "Farnell"
+	1    1125 5650
+	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	3350 5700 3350 5800
-Wire Wire Line
-	3350 5800 4025 5800
-Connection ~ 4025 5800
-Wire Wire Line
-	2375 5800 3075 5800
-Connection ~ 2375 5800
-Wire Wire Line
-	3075 5800 3075 5700
-Text Notes 1625 6875 0    60   ~ 0
-H bridge for driving a coil with a rectangular signal in the mHz range. Designed\nfor at least 100 mA. Maximum current unknown.
-Wire Wire Line
-	8150 1525 8150 2100
-Connection ~ 7850 1600
-Connection ~ 8150 1600
 $Comp
-L Q_PMOS_GSD Q1
-U 1 1 5956290B
-P 2275 3775
-F 0 "Q1" H 2475 3825 50  0000 L CNN
-F 1 "DMP2035U" H 2475 3725 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 3875 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 2275 3775 50  0001 C CNN
-F 4 "2061419" H 2275 3775 60  0001 C CNN "Farnell"
-	1    2275 3775
-	1    0    0    1   
+L +3.3V #PWR?
+U 1 1 59935E92
+P 2775 5275
+F 0 "#PWR?" H 2775 5125 50  0001 C CNN
+F 1 "+3.3V" H 2775 5415 50  0000 C CNN
+F 2 "" H 2775 5275 50  0001 C CNN
+F 3 "" H 2775 5275 50  0001 C CNN
+	1    2775 5275
+	1    0    0    -1  
 $EndComp
 $Comp
-L Q_NMOS_GSD Q2
-U 1 1 59562912
-P 2275 4425
-F 0 "Q2" H 2475 4475 50  0000 L CNN
-F 1 "TSM2314" H 2475 4375 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 4525 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 2275 4425 50  0001 C CNN
-F 4 "1864589" H 2275 4425 60  0001 C CNN "Farnell"
-	1    2275 4425
+L C C?
+U 1 1 59935E9B
+P 1650 6100
+F 0 "C?" H 1675 6200 50  0000 L CNN
+F 1 "10u" H 1675 6000 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 1688 5950 50  0001 C CNN
+F 3 "" H 1650 6100 50  0001 C CNN
+F 4 "1833812" H 1650 6100 60  0001 C CNN "Farnell"
+	1    1650 6100
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	2375 3975 2375 4225
 $Comp
-L GND #PWR035
-U 1 1 5956291A
-P 2375 4725
-F 0 "#PWR035" H 2375 4475 50  0001 C CNN
-F 1 "GND" H 2375 4575 50  0000 C CNN
-F 2 "" H 2375 4725 50  0000 C CNN
-F 3 "" H 2375 4725 50  0000 C CNN
-	1    2375 4725
+L GND #PWR?
+U 1 1 59935EA3
+P 1650 6275
+F 0 "#PWR?" H 1650 6025 50  0001 C CNN
+F 1 "GND" H 1650 6125 50  0000 C CNN
+F 2 "" H 1650 6275 50  0001 C CNN
+F 3 "" H 1650 6275 50  0001 C CNN
+	1    1650 6275
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	2375 4625 2375 4725
+NoConn ~ 2575 5500
+Text Notes 1075 4925 0    60   ~ 0
+Place decoupling capacitors close to component!
+$Comp
+L +3.3V #PWR?
+U 1 1 59935EBE
+P 1600 5275
+F 0 "#PWR?" H 1600 5125 50  0001 C CNN
+F 1 "+3.3V" H 1600 5415 50  0000 C CNN
+F 2 "" H 1600 5275 50  0001 C CNN
+F 3 "" H 1600 5275 50  0001 C CNN
+	1    1600 5275
+	-1   0    0    -1  
+$EndComp
 $Comp
-L +5V #PWR036
-U 1 1 59562921
-P 2375 3500
-F 0 "#PWR036" H 2375 3350 50  0001 C CNN
-F 1 "+5V" H 2375 3640 50  0000 C CNN
-F 2 "" H 2375 3500 50  0000 C CNN
-F 3 "" H 2375 3500 50  0000 C CNN
-	1    2375 3500
+L ICL7660S U?
+U 1 1 59935ED1
+P 2175 5350
+F 0 "U?" H 2020 5480 40  0000 C CNN
+F 1 "ICL7660S" H 2300 5480 40  0000 C CNN
+F 2 "SMD_Packages:SOIC-8-N" H 2175 5350 60  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2059962.pdf" H 2175 5350 60  0001 C CNN
+F 4 "1561969" H 2175 5350 60  0001 C CNN "Farnell"
+	1    2175 5350
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2375 3500 2375 3575
-Wire Wire Line
-	2075 3775 1950 3775
+	1600 5350 1775 5350
 Wire Wire Line
-	1950 3700 1950 4425
+	1600 5650 1775 5650
 Wire Wire Line
-	1950 4425 2075 4425
-Text HLabel 1875 4100 0    60   Input ~ 0
-GPIO_COIL_1
+	1650 5650 1650 5950
 Wire Wire Line
-	1875 4100 1950 4100
-Connection ~ 1950 4100
-Wire Wire Line
-	4025 3975 4025 4225
+	1650 6250 1650 6275
 $Comp
-L GND #PWR037
-U 1 1 59562931
-P 4025 4725
-F 0 "#PWR037" H 4025 4475 50  0001 C CNN
-F 1 "GND" H 4025 4575 50  0000 C CNN
-F 2 "" H 4025 4725 50  0000 C CNN
-F 3 "" H 4025 4725 50  0000 C CNN
-	1    4025 4725
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 59936476
+P 2650 6275
+F 0 "#PWR?" H 2650 6025 50  0001 C CNN
+F 1 "GND" H 2650 6125 50  0000 C CNN
+F 2 "" H 2650 6275 50  0001 C CNN
+F 3 "" H 2650 6275 50  0001 C CNN
+	1    2650 6275
+	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	4025 4625 4025 4725
-$Comp
-L +5V #PWR038
-U 1 1 59562938
-P 4025 3500
-F 0 "#PWR038" H 4025 3350 50  0001 C CNN
-F 1 "+5V" H 4025 3640 50  0000 C CNN
-F 2 "" H 4025 3500 50  0000 C CNN
-F 3 "" H 4025 3500 50  0000 C CNN
-	1    4025 3500
-	-1   0    0    -1  
-$EndComp
+	2575 5650 2650 5650
 Wire Wire Line
-	4025 3500 4025 3575
+	2650 5650 2650 6275
 Wire Wire Line
-	4325 3775 4450 3775
+	2575 5800 2650 5800
+Connection ~ 2650 5800
 Wire Wire Line
-	4450 3700 4450 4425
+	1125 5800 1125 5875
 Wire Wire Line
-	4450 4425 4325 4425
-Text HLabel 4525 4100 2    60   Input ~ 0
-GPIO_COIL_2
+	1125 5875 1325 5875
 Wire Wire Line
-	4525 4100 4450 4100
-Connection ~ 4450 4100
-$Comp
-L Q_PMOS_GSD Q5
-U 1 1 59562954
-P 4125 3775
-F 0 "Q5" H 4325 3825 50  0000 L CNN
-F 1 "DMP2035U" H 4325 3725 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 3875 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2100440.pdf" H 4125 3775 50  0001 C CNN
-F 4 "2061419" H 4125 3775 60  0001 C CNN "Farnell"
-	1    4125 3775
-	-1   0    0    1   
-$EndComp
+	1325 5875 1325 5800
 Wire Wire Line
-	3350 4000 3350 4100
+	1325 5800 1775 5800
 Wire Wire Line
-	3350 4100 4025 4100
-Connection ~ 4025 4100
+	1125 5500 1125 5425
 Wire Wire Line
-	2375 4100 3075 4100
-Connection ~ 2375 4100
+	1125 5425 1325 5425
 Wire Wire Line
-	3075 4100 3075 4000
-Text HLabel 9000 4550 0    60   Input ~ 0
-LED_CONTROLL
+	1325 5425 1325 5500
+Wire Wire Line
+	1325 5500 1775 5500
+Wire Wire Line
+	1600 5275 1600 5350
 $Comp
-L GND #PWR039
-U 1 1 59563916
-P 1850 1800
-F 0 "#PWR039" H 1850 1550 50  0001 C CNN
-F 1 "GND" H 1850 1650 50  0000 C CNN
-F 2 "" H 1850 1800 50  0001 C CNN
-F 3 "" H 1850 1800 50  0001 C CNN
-	1    1850 1800
+L GND #PWR?
+U 1 1 59936F44
+P 2900 6275
+F 0 "#PWR?" H 2900 6025 50  0001 C CNN
+F 1 "GND" H 2900 6125 50  0000 C CNN
+F 2 "" H 2900 6275 50  0001 C CNN
+F 3 "" H 2900 6275 50  0001 C CNN
+	1    2900 6275
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2000 1800 1850 1800
-Wire Wire Line
-	2000 1650 1400 1650
+	2900 5975 2900 6275
 Wire Wire Line
-	1400 1950 1400 2025
+	2575 5350 2900 5350
 Wire Wire Line
-	1400 2025 2000 2025
+	2900 5350 2900 5675
+$Comp
+L C C?
+U 1 1 5993721F
+P 2900 5825
+F 0 "C?" H 2925 5925 50  0000 L CNN
+F 1 "10u" H 2925 5725 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 2938 5675 50  0001 C CNN
+F 3 "" H 2900 5825 50  0001 C CNN
+F 4 "1833812" H 2900 5825 60  0001 C CNN "Farnell"
+	1    2900 5825
+	1    0    0    -1  
+$EndComp
 Wire Wire Line
-	2000 2025 2000 1950
+	2775 5275 2775 5350
+Connection ~ 2775 5350
 $Comp
-L +3.3V #PWR040
-U 1 1 59563EC0
-P 3000 1425
-F 0 "#PWR040" H 3000 1275 50  0001 C CNN
-F 1 "+3.3V" H 3000 1565 50  0000 C CNN
-F 2 "" H 3000 1425 50  0001 C CNN
-F 3 "" H 3000 1425 50  0001 C CNN
-	1    3000 1425
+L C C?
+U 1 1 59937E8F
+P 3275 5650
+F 0 "C?" H 3300 5750 50  0000 L CNN
+F 1 "10u" H 3300 5550 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 3313 5500 50  0001 C CNN
+F 3 "" H 3275 5650 50  0001 C CNN
+F 4 "1833812" H 3275 5650 60  0001 C CNN "Farnell"
+	1    3275 5650
 	1    0    0    -1  
 $EndComp
+$Comp
+L GND #PWR?
+U 1 1 59937EA2
+P 3800 6275
+F 0 "#PWR?" H 3800 6025 50  0001 C CNN
+F 1 "GND" H 3800 6125 50  0000 C CNN
+F 2 "" H 3800 6275 50  0001 C CNN
+F 3 "" H 3800 6275 50  0001 C CNN
+	1    3800 6275
+	1    0    0    -1  
+$EndComp
+NoConn ~ 4725 5500
+$Comp
+L ICL7660S U?
+U 1 1 59937EB1
+P 4325 5350
+F 0 "U?" H 4170 5480 40  0000 C CNN
+F 1 "ICL7660S" H 4450 5480 40  0000 C CNN
+F 2 "SMD_Packages:SOIC-8-N" H 4325 5350 60  0001 C CNN
+F 3 "http://www.farnell.com/datasheets/2059962.pdf" H 4325 5350 60  0001 C CNN
+F 4 "1561969" H 4325 5350 60  0001 C CNN "Farnell"
+	1    4325 5350
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3750 5350 3925 5350
 Wire Wire Line
-	3000 1425 3000 1500
+	3925 5650 3800 5650
 Wire Wire Line
-	2800 1500 3125 1500
+	3800 5650 3800 6275
 $Comp
-L C C18
-U 1 1 595644A6
-P 2900 2250
-F 0 "C18" H 2925 2350 50  0000 L CNN
-F 1 "10u" H 2925 2150 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 2938 2100 50  0001 C CNN
-F 3 "" H 2900 2250 50  0001 C CNN
-F 4 "1833812" H 2900 2250 60  0001 C CNN "Farnell"
-	1    2900 2250
+L GND #PWR?
+U 1 1 59937EBB
+P 4800 6275
+F 0 "#PWR?" H 4800 6025 50  0001 C CNN
+F 1 "GND" H 4800 6125 50  0000 C CNN
+F 2 "" H 4800 6275 50  0001 C CNN
+F 3 "" H 4800 6275 50  0001 C CNN
+	1    4800 6275
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2800 1950 2900 1950
+	4725 5650 4800 5650
+Wire Wire Line
+	4800 5650 4800 6275
+Wire Wire Line
+	3275 5800 3275 5875
+Wire Wire Line
+	3275 5875 3475 5875
+Wire Wire Line
+	3475 5875 3475 5800
+Wire Wire Line
+	3475 5800 3925 5800
 Wire Wire Line
-	2900 1950 2900 2100
+	3275 5500 3275 5425
+Wire Wire Line
+	3275 5425 3475 5425
+Wire Wire Line
+	3475 5425 3475 5500
+Wire Wire Line
+	3475 5500 3925 5500
+Wire Wire Line
+	3750 5225 3750 5350
 $Comp
-L GND #PWR041
-U 1 1 5956469D
-P 2900 2425
-F 0 "#PWR041" H 2900 2175 50  0001 C CNN
-F 1 "GND" H 2900 2275 50  0000 C CNN
-F 2 "" H 2900 2425 50  0001 C CNN
-F 3 "" H 2900 2425 50  0001 C CNN
-	1    2900 2425
+L GND #PWR?
+U 1 1 59937ECF
+P 5750 6275
+F 0 "#PWR?" H 5750 6025 50  0001 C CNN
+F 1 "GND" H 5750 6125 50  0000 C CNN
+F 2 "" H 5750 6275 50  0001 C CNN
+F 3 "" H 5750 6275 50  0001 C CNN
+	1    5750 6275
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	2900 2400 2900 2425
-Text HLabel 3400 2050 2    60   Output ~ 0
--3.3V
+	5750 5975 5750 6275
+Wire Wire Line
+	4725 5350 5750 5350
 Wire Wire Line
-	2900 2050 3400 2050
-Connection ~ 2900 2050
-NoConn ~ 2800 1650
+	5750 5350 5750 5675
 $Comp
-L C C19
-U 1 1 59565F34
-P 3125 1650
-F 0 "C19" H 3150 1750 50  0000 L CNN
-F 1 "1u" H 3150 1550 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 3163 1500 50  0001 C CNN
-F 3 "" H 3125 1650 50  0000 C CNN
-F 4 "1845751" H 3125 1650 60  0001 C CNN "Farnell"
-	1    3125 1650
+L C C?
+U 1 1 59937EDA
+P 5750 5825
+F 0 "C?" H 5775 5925 50  0000 L CNN
+F 1 "10u" H 5775 5725 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 5788 5675 50  0001 C CNN
+F 3 "" H 5750 5825 50  0001 C CNN
+F 4 "1833812" H 5750 5825 60  0001 C CNN "Farnell"
+	1    5750 5825
 	1    0    0    -1  
 $EndComp
-Connection ~ 3000 1500
-Connection ~ 3000 1800
-Text Notes 3325 1650 0    60   ~ 0
-Place decoupling capacitors close to component!
-$Comp
-L CONN_01X03 P1
-U 1 1 59567D00
-P 1450 1225
-F 0 "P1" H 1450 1425 50  0000 C CNN
-F 1 "CONN_01X03" V 1550 1225 50  0000 C CNN
-F 2 "Samtec Connectors:Samtec-PHT-1-3-01-L-S" H 1450 1225 50  0001 C CNN
-F 3 "" H 1450 1225 50  0000 C CNN
-	1    1450 1225
-	-1   0    0    -1  
+Connection ~ 4925 5350
+$Comp
+L C C?
+U 1 1 59938428
+P 5075 6025
+F 0 "C?" H 5100 6125 50  0000 L CNN
+F 1 "10u" H 5100 5925 50  0000 L CNN
+F 2 "Resistors_SMD:R_0805" H 5113 5875 50  0001 C CNN
+F 3 "" H 5075 6025 50  0001 C CNN
+F 4 "1833812" H 5075 6025 60  0001 C CNN "Farnell"
+	1    5075 6025
+	1    0    0    -1  
 $EndComp
 $Comp
-L +3.3V #PWR042
-U 1 1 595680C2
-P 1825 1125
-F 0 "#PWR042" H 1825 975 50  0001 C CNN
-F 1 "+3.3V" H 1825 1265 50  0000 C CNN
-F 2 "" H 1825 1125 50  0001 C CNN
-F 3 "" H 1825 1125 50  0001 C CNN
-	1    1825 1125
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 599384B9
+P 5075 6275
+F 0 "#PWR?" H 5075 6025 50  0001 C CNN
+F 1 "GND" H 5075 6125 50  0000 C CNN
+F 2 "" H 5075 6275 50  0001 C CNN
+F 3 "" H 5075 6275 50  0001 C CNN
+	1    5075 6275
+	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	1825 1125 1650 1125
-NoConn ~ 1650 1325
-Text Notes 1850 1175 0    60   ~ 0
-Boost pin to make the oscillator faster. Enabled when connected to 3.3 V.
-Text Notes 1375 2825 0    60   ~ 0
-Charge pump to generate -3.3 V.
-Text GLabel 3075 4000 1    60   UnSpc ~ 0
-COIL_1
-Text GLabel 3350 4000 1    60   UnSpc ~ 0
-COIL_2
-Text GLabel 3075 5700 1    60   UnSpc ~ 0
-COIL_3
-Text GLabel 3350 5700 1    60   UnSpc ~ 0
-COIL_4
-$Comp
-L CONN_01X04 J3
-U 1 1 5956B77E
-P 5600 4925
-F 0 "J3" H 5600 5175 50  0000 C CNN
-F 1 "CONN_01X04" V 5700 4925 50  0000 C CNN
-F 2 "China Connectors:LED_CONN_1.25_PITCH" H 5600 4925 50  0001 C CNN
-F 3 "" H 5600 4925 50  0001 C CNN
-	1    5600 4925
+	5075 5800 5075 5875
+Wire Wire Line
+	5075 6175 5075 6275
+Text GLabel 1600 5650 0    60   Output ~ 0
+1.65V
+Connection ~ 1650 5650
+Text GLabel 5200 5800 2    60   Output ~ 0
+-1.65V
+Connection ~ 5075 5800
+Wire Wire Line
+	4725 5800 5200 5800
+Text Notes 4150 6700 0    60   ~ 0
+Voltage Inverter
+Text Notes 1850 6675 0    60   ~ 0
+Voltage Divider
+Text GLabel 3750 5225 1    60   Input ~ 0
+1.65V
+Text GLabel 4925 5225 1    60   Input ~ 0
+1.65V
+Wire Wire Line
+	4925 5225 4925 5350
+$Comp
+L CONN_01X02 J?
+U 1 1 5993B030
+P 7825 4975
+F 0 "J?" H 7825 5125 50  0000 C CNN
+F 1 "CONN_01X02" V 7925 4975 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 7825 4975 50  0001 C CNN
+F 3 "" H 7825 4975 50  0001 C CNN
+	1    7825 4975
 	1    0    0    -1  
 $EndComp
-Text GLabel 5400 4775 0    60   UnSpc ~ 0
-COIL_1
-Text GLabel 5400 4875 0    60   UnSpc ~ 0
-COIL_2
-Text GLabel 5400 4975 0    60   UnSpc ~ 0
-COIL_3
-Text GLabel 5400 5075 0    60   UnSpc ~ 0
-COIL_4
-$Comp
-L TEST GPIO1
-U 1 1 59595C55
-P 1950 3700
-F 0 "GPIO1" H 1950 4000 50  0000 C BNN
-F 1 "TEST" H 1950 3950 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 1950 3700 50  0001 C CNN
-F 3 "" H 1950 3700 50  0000 C CNN
-	1    1950 3700
-	-1   0    0    -1  
-$EndComp
-$Comp
-L TEST GPIO2
-U 1 1 59596119
-P 4450 3700
-F 0 "GPIO2" H 4450 4000 50  0000 C BNN
-F 1 "TEST" H 4450 3950 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 4450 3700 50  0001 C CNN
-F 3 "" H 4450 3700 50  0000 C CNN
-	1    4450 3700
-	-1   0    0    -1  
-$EndComp
 $Comp
-L TEST GPIO3
-U 1 1 59596260
-P 1950 5400
-F 0 "GPIO3" H 1950 5700 50  0000 C BNN
-F 1 "TEST" H 1950 5650 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 1950 5400 50  0001 C CNN
-F 3 "" H 1950 5400 50  0000 C CNN
-	1    1950 5400
+L CONN_01X02 J?
+U 1 1 5993B101
+P 8175 4975
+F 0 "J?" H 8175 5125 50  0000 C CNN
+F 1 "CONN_01X02" V 8275 4975 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 8175 4975 50  0001 C CNN
+F 3 "" H 8175 4975 50  0001 C CNN
+	1    8175 4975
 	-1   0    0    -1  
 $EndComp
-$Comp
-L TEST GPIO4
-U 1 1 5959632C
-P 4450 5400
-F 0 "GPIO4" H 4450 5700 50  0000 C BNN
-F 1 "TEST" H 4450 5650 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 4450 5400 50  0001 C CNN
-F 3 "" H 4450 5400 50  0000 C CNN
-	1    4450 5400
-	-1   0    0    -1  
-$EndComp
-$Comp
-L TEST 3V3
-U 1 1 59596507
-P 3250 2150
-F 0 "3V3" H 3250 2450 50  0000 C BNN
-F 1 "TEST" H 3250 2400 50  0000 C CNN
-F 2 "Tespoints:TP_SMD_quadr_1mm" H 3250 2150 50  0001 C CNN
-F 3 "" H 3250 2150 50  0000 C CNN
-	1    3250 2150
-	1    0    0    1   
-$EndComp
-Wire Wire Line
-	3250 2150 3250 2050
-Connection ~ 3250 2050
-Connection ~ 4450 3775
-Connection ~ 1950 3775
-Connection ~ 4450 5475
-Connection ~ 1950 5475
-$Comp
-L ICL7660S U3
-U 1 1 5956AD62
-P 2400 1500
-F 0 "U3" H 2245 1630 40  0000 C CNN
-F 1 "ICL7660S" H 2525 1630 40  0000 C CNN
-F 2 "SMD_Packages:SOIC-8-N" H 2400 1500 60  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2059962.pdf" H 2400 1500 60  0001 C CNN
-F 4 "1561969" H 2400 1500 60  0001 C CNN "Farnell"
-	1    2400 1500
+Text GLabel 7625 5025 0    60   Input ~ 0
+1.65V
+$Comp
+L +3.3V #PWR?
+U 1 1 5993B52B
+P 7325 4850
+F 0 "#PWR?" H 7325 4700 50  0001 C CNN
+F 1 "+3.3V" H 7325 4990 50  0000 C CNN
+F 2 "" H 7325 4850 50  0001 C CNN
+F 3 "" H 7325 4850 50  0001 C CNN
+	1    7325 4850
 	1    0    0    -1  
 $EndComp
-$Comp
-L C C23
-U 1 1 5956BF7A
-P 9375 2050
-F 0 "C23" H 9400 2150 50  0000 L CNN
-F 1 "100n" H 9400 1950 50  0000 L CNN
-F 2 "Resistors_SMD:R_0805" H 9413 1900 50  0001 C CNN
-F 3 "" H 9375 2050 50  0000 C CNN
-F 4 "499687" H 9375 2050 60  0001 C CNN "Farnell"
-	1    9375 2050
-	0    1    1    0   
-$EndComp
 Wire Wire Line
-	1650 1225 1825 1225
+	7325 4925 7625 4925
 Wire Wire Line
-	1825 1225 1825 1500
+	7325 4850 7325 4925
+Text HLabel 8525 4925 2    60   Output ~ 0
+V_SENS_POS
 Wire Wire Line
-	1825 1500 2000 1500
-Text Notes 8325 1200 0    60   ~ 0
-Low-pass has a cut-off freq. of approx. 1.6 Hz, ergo DC.
-$Comp
-L +3.3V #PWR043
-U 1 1 595BE0DA
-P 8150 1525
-F 0 "#PWR043" H 8150 1375 50  0001 C CNN
-F 1 "+3.3V" H 8150 1665 50  0000 C CNN
-F 2 "" H 8150 1525 50  0001 C CNN
-F 3 "" H 8150 1525 50  0001 C CNN
-	1    8150 1525
-	-1   0    0    -1  
-$EndComp
+	8525 4925 8375 4925
+Wire Wire Line
+	8375 5025 8450 5025
+Wire Wire Line
+	8450 5025 8450 4925
+Connection ~ 8450 4925
 $Comp
-L Q_NMOS_GSD Q4
-U 1 1 59557415
-P 2275 6125
-F 0 "Q4" H 2475 6175 50  0000 L CNN
-F 1 "TSM2314" H 2475 6075 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 2475 6225 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 2275 6125 50  0001 C CNN
-F 4 "1864589" H 2275 6125 60  0001 C CNN "Farnell"
-	1    2275 6125
+L CONN_01X02 J?
+U 1 1 5993FBA5
+P 7800 5625
+F 0 "J?" H 7800 5775 50  0000 C CNN
+F 1 "CONN_01X02" V 7900 5625 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 7800 5625 50  0001 C CNN
+F 3 "" H 7800 5625 50  0001 C CNN
+	1    7800 5625
 	1    0    0    -1  
 $EndComp
 $Comp
-L Q_NMOS_GSD Q8
-U 1 1 59558B41
-P 4125 6125
-F 0 "Q8" H 4325 6175 50  0000 L CNN
-F 1 "TSM2314" H 4325 6075 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 6225 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 4125 6125 50  0001 C CNN
-F 4 "1864589" H 4125 6125 60  0001 C CNN "Farnell"
-	1    4125 6125
+L CONN_01X02 J?
+U 1 1 5993FBAB
+P 8150 5625
+F 0 "J?" H 8150 5775 50  0000 C CNN
+F 1 "CONN_01X02" V 8250 5625 50  0000 C CNN
+F 2 "Samtec Connectors:Samtec-PHT-1-2-01-L-S" H 8150 5625 50  0001 C CNN
+F 3 "" H 8150 5625 50  0001 C CNN
+	1    8150 5625
 	-1   0    0    -1  
 $EndComp
+Text HLabel 8500 5575 2    60   Output ~ 0
+V_SENS_NEG
+Wire Wire Line
+	8500 5575 8350 5575
+Wire Wire Line
+	8350 5675 8425 5675
+Wire Wire Line
+	8425 5675 8425 5575
+Connection ~ 8425 5575
+Text GLabel 7600 5575 0    60   Input ~ 0
+-1.65V
 $Comp
-L Q_NMOS_GSD Q6
-U 1 1 5956294D
-P 4125 4425
-F 0 "Q6" H 4325 4475 50  0000 L CNN
-F 1 "TSM2314" H 4325 4375 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 4325 4525 50  0001 C CNN
-F 3 "http://www.farnell.com/datasheets/2044480.pdf" H 4125 4425 50  0001 C CNN
-F 4 "1864589" H 4125 4425 60  0001 C CNN "Farnell"
-	1    4125 4425
-	-1   0    0    -1  
+L GND #PWR?
+U 1 1 5993FFC9
+P 7225 5725
+F 0 "#PWR?" H 7225 5475 50  0001 C CNN
+F 1 "GND" H 7225 5575 50  0000 C CNN
+F 2 "" H 7225 5725 50  0001 C CNN
+F 3 "" H 7225 5725 50  0001 C CNN
+	1    7225 5725
+	1    0    0    -1  
 $EndComp
-Text Notes 5550 3700 0    60   ~ 0
-Investigate if AD8616 here can be replaced by the LM358 (most likely yes, footprints match). 
+Wire Wire Line
+	7225 5725 7225 5675
+Wire Wire Line
+	7225 5675 7600 5675
 $EndSCHEMATC