Finished a PCB holder for etching.

etching/cad_etching_bath/pcb_holder_crossbar.scad

@@ -0,0 +1,18 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Adapter for drilling machine in the embedded lab.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   07.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+crossbar_depth = 175;
+crossbar_height = 10;
+crossbar_width = 5;
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+cube([crossbar_width, crossbar_depth, crossbar_height], center = true);

etching/cad_etching_bath/pcb_holder_frame.scad

@@ -0,0 +1,48 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Adapter for drilling machine in the embedded lab.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   07.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+cone_radius_1 = 31.8 /2;
+cone_radius_2 = 48.1 /2;
+cone_height = 31;
+
+cylinder_radius = 43 /2;
+cylinder_height = 21.5;
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+
+difference()
+{
+difference()
+{
+	union()
+	{
+		// Draw the hole to hold the drilling machine
+		translate([0, 0, cylinder_height/2])
+		cylinder(h = cylinder_height, r = cylinder_radius, center = true);
+		translate([0, 0, 1.5 + cylinder_height])
+		cylinder(h = 3, r = 26, center = true);
+	}
+
+	translate([0, 0, cone_height/2 + 3])
+	union()
+	{
+		translate([0, 0, -20])
+		cylinder(h = 15, r = cone_radius_1, center = true);
+		// Draw cone measured
+		cylinder(h = cone_height, r1 = cone_radius_1, r2 = cone_radius_2, center = true);
+	
+	}
+}
+translate([cone_radius_2, 0, 0])
+cube([30, 15, 60], center = true);
+
+}

etching/cad_etching_bath/pcb_holder_holder_l.scad

@@ -0,0 +1,87 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Adapter for drilling machine in the embedded lab.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   10.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+holder_height = 175;
+holder_width = 15;
+holder_depth = 5;
+
+notch_height = 120;
+notch_width = 2;
+notch_depth = 3;
+
+allowance = 0.5;
+
+crossbar_height = 10 + allowance;
+crossbar_width = 5 + allowance;
+crossbar_depth = 175;
+
+pillar_height = 20;
+pillar_width = 15;
+pillar_depth = holder_depth;
+
+airpump_diameter = 30;
+
+// Suitable for M3 screw thread
+hole_diameter = 2.5;
+
+// Height difference between notch for PCB and the actual holder
+height_diff_1 = holder_height - notch_height;
+
+// Height difference between notch position and crossbar_slot
+height_diff_2 = 0.7*height_diff_1 - airpump_diameter/2;
+
+// Width difference between crossbar and holder
+width_diff_1 = holder_width - crossbar_width; 
+
+// With difference between 
+width_diff_2 = pillar_width - holder_width;
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+difference()
+{
+union()
+{
+	// Cube for the base holder
+	cube([holder_width, holder_depth, holder_height], center = false);
+	// Pillars
+	translate([holder_width - 1, 0, 0])
+	cube([pillar_width, pillar_depth, pillar_height]);
+	translate([-pillar_width + 1, 0, 0])
+	cube([pillar_width, pillar_depth, pillar_height]);
+}
+
+union()
+{
+	// Drill holes for air pump
+	translate([holder_width/2, holder_depth + 1, 0])
+	rotate([90, 0, 0])
+	cylinder(h = holder_depth + 2, r = airpump_diameter/2);
+
+	// Cube for notch
+	translate([holder_width/2 - notch_width/2, -1, 0.7*height_diff_1])
+	cube([notch_width, notch_depth, notch_height], center = false);
+
+	// Slots for crossbars
+	translate([width_diff_1/2, -1, height_diff_2/2 + airpump_diameter/2 - crossbar_height/2])
+	cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+	translate([width_diff_1/2, -1, holder_height - 0.3*height_diff_1/2 - crossbar_height/2])
+	cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+
+	// Drill holes for screws
+	translate([-1, holder_depth/2, height_diff_2/2 + airpump_diameter/2])
+	rotate([0, 90, 0])
+	cylinder(h = 9, r = hole_diameter/2);
+	translate([-1, holder_depth/2, holder_height - 0.3*height_diff_1/2])
+	rotate([0, 90, 0])
+	cylinder(h = 9, r = hole_diameter/2);
+}
+}

etching/cad_etching_bath/pcb_holder_holder_r.scad

@@ -0,0 +1,87 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Adapter for drilling machine in the embedded lab.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   10.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+holder_height = 175;
+holder_width = 15;
+holder_depth = 5;
+
+notch_height = 120;
+notch_width = 2;
+notch_depth = 3;
+
+allowance = 0.5;
+
+crossbar_height = 10 + allowance;
+crossbar_width = 5 + allowance;
+crossbar_depth = 175;
+
+pillar_height = 20;
+pillar_width = 15;
+pillar_depth = holder_depth;
+
+airpump_diameter = 30;
+
+// Suitable for M3 screw thread
+hole_diameter = 2.5;
+
+// Height difference between notch for PCB and the actual holder
+height_diff_1 = holder_height - notch_height;
+
+// Height difference between notch position and crossbar_slot
+height_diff_2 = 0.7*height_diff_1 - airpump_diameter/2;
+
+// Width difference between crossbar and holder
+width_diff_1 = holder_width - crossbar_width; 
+
+// With difference between 
+width_diff_2 = pillar_width - holder_width;
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+difference()
+{
+union()
+{
+	// Cube for the base holder
+	cube([holder_width, holder_depth, holder_height], center = false);
+	// Pillars
+	translate([holder_width , 0, 0])
+	cube([pillar_width, pillar_depth, pillar_height]);
+	translate([-pillar_width, 0, 0])
+	cube([pillar_width, pillar_depth, pillar_height]);
+}
+
+union()
+{
+	// Drill holes for air pump
+	translate([holder_width/2, holder_depth + 1, 0])
+	rotate([90, 0, 0])
+	cylinder(h = holder_depth + 2, r = airpump_diameter/2);
+
+	// Cube for notch
+	translate([holder_width/2 - notch_width/2, -1, 0.7*height_diff_1])
+	cube([notch_width, notch_depth, notch_height], center = false);
+
+	// Slots for crossbars
+	translate([width_diff_1/2, -1, height_diff_2/2 + airpump_diameter/2 - crossbar_height/2])
+	cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+	translate([width_diff_1/2, -1, holder_height - 0.3*height_diff_1/2 - crossbar_height/2])
+	cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+
+	// Drill holes for screws
+	translate([holder_width/2, holder_depth/2, height_diff_2/2 + airpump_diameter/2])
+	rotate([0, 90, 0])
+	cylinder(h = 9, r = hole_diameter/2);
+	translate([holder_width/2, holder_depth/2, holder_height - 0.3*height_diff_1/2])
+	rotate([0, 90, 0])
+	cylinder(h = 9, r = hole_diameter/2);
+}
+}

pcbs/transimpedance_amp_v0.1/transimpedance_amp.pro

@@ -0,0 +1,71 @@
+update=tor  8 jun 2017 14:46:46
+version=1
+last_client=kicad
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[general]
+version=1
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+LibName1=power
+LibName2=device
+LibName3=transistors
+LibName4=conn
+LibName5=linear
+LibName6=regul
+LibName7=74xx
+LibName8=cmos4000
+LibName9=adc-dac
+LibName10=memory
+LibName11=xilinx
+LibName12=microcontrollers
+LibName13=dsp
+LibName14=microchip
+LibName15=analog_switches
+LibName16=motorola
+LibName17=texas
+LibName18=intel
+LibName19=audio
+LibName20=interface
+LibName21=digital-audio
+LibName22=philips
+LibName23=display
+LibName24=cypress
+LibName25=siliconi
+LibName26=opto
+LibName27=atmel
+LibName28=contrib
+LibName29=valves
+LibName30=schematicSymb/ad8616
+[schematic_editor]
+version=1
+PageLayoutDescrFile=
+PlotDirectoryName=
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=
+SpiceForceRefPrefix=0
+SpiceUseNetNumbers=0
+LabSize=60

pcbs/transimpedance_amp_v0.1_fix/transimpedance_amp_v0.kicad_pcb

@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )

pcbs/transimpedance_amp/transimpedance_amp.pro → pcbs/transimpedance_amp_v0.1_fix/transimpedance_amp_v0.pro

@@ -1,4 +1,4 @@
-update=mån 24 apr 2017 09:35:37
+update=tor  8 jun 2017 14:39:05
 version=1
 last_client=kicad
 [pcbnew]
@@ -23,8 +23,6 @@ ModuleOutlineThickness=0.150000000000
 [cvpcb]
 version=1
 NetIExt=net
-[general]
-version=1
 [eeschema]
 version=1
 LibDir=
@@ -58,4 +56,5 @@ LibName26=opto
 LibName27=atmel
 LibName28=contrib
 LibName29=valves
-LibName30=schematicSymb/ad8616
+[general]
+version=1

pcbs/transimpedance_amp_v0.1_fix/transimpedance_amp_v0.sch

@@ -0,0 +1 @@
+EESchema Schematic File Version 2