I know this thread is old but just wanted to say Well done mate that is a great job! Nice, you are influencing me very much as I am a junior engineer and in two years I will need to create a bulk of these and with your help, I got inspired and I am not scared anymore. I am currently trying to create a
prototype circuit board and how I will be able to finish it in one month. I will ask for help from my uni friends in order to finish it much faster and hope I will achieve the same great results as you achieved. I am planning to be one of the best engineers in Germany in about 5 years.