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It is embarassing but it was (of course) just a little thing:
The 5V are naturally only supplied when the arduino is connected via USB. That was the reason for having no voltage at the Sensorpins.
Another thing that led me in confusion was that I messed something up when soldering a extension to the cables from the light switches. I alternated the polarity….Maybe my mistakes will help others in the future.
Greetings,
AlexOk, I just realized that Pin 41 is not used. That will probably solve the problem.
But I do have another Question. Where does the Voltage supply for the light switches come frome?
Mine did not light up when wired to the shield, but did when supplied by external power supply.
I checked and it looks like that there is no voltage at the pins.Did anybody else had this problem? Did I kill my board or am I missing something? BTW: What are the jumper connectors for?
