diff --git a/README.md b/README.md
index 6b6f711..38b7b73 100644
--- a/README.md
+++ b/README.md
@@ -14,25 +14,32 @@ compatible to euro cards (and even bigger ones). The etching machine is either
 filled with sodium persulfate (Na<sub>2</sub>S<sub>2</sub>O<sub>8</sub>) or
 iron(III) chloride (FeCl<sub>3</sub>) dissolved in water of course.
 
-## Cuvette 
-![alt text](https://github.com/m3x1m0m/ecthing/blob/master/photos/cuvette.jpg) 
+## Redhead OS
+
+One of the byproducts of this project is a small real-time OS, which is ment to run on embedded platforms. It is based on fixed priority scheduling and includes some nice accessories, so one does not always have to reinvent the wheel for every new project.  
+
+![3D Preview from KiCad (2).](https://github.com/m3x1m0m/ecthing/blob/master/pcbs/extension_board/output/3d_pic_2.jpg)
+
+
 ## UV Light 
+
 ### Driver Extension Board
 
 ![3D Preview from KiCad (1).](https://github.com/m3x1m0m/ecthing/blob/master/pcbs/extension_board/output/3d_pic_1.jpg)
 
 This PCB is made to fit the [Nucleo-F103RB](http://www.st.com/en/evaluation-tools/nucleo-f103rb.html)
 development board from STM. Features:
-- 64 LED driving stages
-- 6.4 A and 24 V max. input (0.1 A per stage)
-- 0.2 A max. and 350 mW dissipation max. per stage 
-- 10 Bit DAC to steer the driver
-- Optional potentiometer to steer the drivers
-- Control-loop for constant current
-- Feedback amplification to get a high current resolution
-- I2C header
-- SPI header
-- 2 rotary encoders and 1 tactile switch
+* 64 LED driver stages.
+* 6.4 A (0.1 A per stage) and 24 V max. input.
+* 0.2 A max. and 350 mW dissipation max. per stage. Stages can be left floating if unused without
+the threat of damaging the device.
+* 10 Bit Digital-to-Analog Converter (DAC) to steer the driver combined with feedback amplification
+to achieve a tremendously fine resolution.
+* Optional potentiometer to set the current.
+* Control loop to guarantee the desired current and respond quickly to changing the setpoint.
+* 2 rotary encoders and 1 tactile switch.
+* I2C header.
+* SPI header.
  
 ![3D Preview from KiCad (2).](https://github.com/m3x1m0m/ecthing/blob/master/pcbs/extension_board/output/3d_pic_2.jpg)
   
@@ -41,7 +48,12 @@ development board from STM. Features:
   3.3 V in order to achieve higher currents different resistor values have to be
   chosen.   
   
-  ![alt text](https://github.com/m3x1m0m/ecthing/blob/master/photos/uv_lamp.jpg) 
+  ![UV Lamp](https://github.com/m3x1m0m/ecthing/blob/master/photos/uv_lamp.jpg) 
+
+## Cuvette 
+
+The cuvette can be handcrafted. It is possible to buy the five glass pieces need
+at a glassers shop or to cut it oneself. The glass parts can be glued together with
+silicon.  
+![Cuvette](https://github.com/m3x1m0m/ecthing/blob/master/photos/cuvette.jpg) 
 
-## Etching Instruction 
-TBD 
diff --git a/docs/.gitignore b/docs/.gitignore
index 7485de1..2627ce1 100644
--- a/docs/.gitignore
+++ b/docs/.gitignore
@@ -224,4 +224,6 @@ TSWLatexianTemp*
 # expex forward references with \gathertags
 *-tags.tex
 
+
 # End of https://www.gitignore.io/api/latex
+
diff --git a/docs/report b/docs/report
new file mode 160000
index 0000000..7033dd0
--- /dev/null
+++ b/docs/report
@@ -0,0 +1 @@
+Subproject commit 7033dd02912b0631e85f390e304f788ba32e165b