I just finished the sensor array and included it into my ‘double stack’ together with the digitiser (and motherboard of course). All sensors seem to be working alright and I am working myself through the software and learning C++ on the way. Thank you!
However, after testing all the sensors I returned to the Digital Clock and found that the microphone input somehow switches the different clock outputs (in stead of through the switch SW1 of the digitiser). Turning down the microphone input with RV1 solves the problem. Where do they connect? Solution?