https://forum.arduino.cc/t/quick-question-about-grounding-in-circuits/68306
Quick question about grounding in circuits - General Electronics - Arduino Forum
Aug 8, 2011 - Hello again, Arduino forums! Today I'm using a set of phototransistors (five of them) on a breadboard to sense light. I've set up the circuits correctly, but...
quick questionabout groundinggeneral electronicscircuitsarduino