Hello again, Arduino forums. I've been working with phototransistors in the past few weeks and I just had a quick question about using many of them at once. I've been using a setup with a 22Kohm resistor that looks like this:
PWR------22K resistor----Analog in ----- phototransistor ---- GND
Is it possible to power a bunch of phototransistors simultaneously from the 5V pin on the Arduino? Like, oh, sixteen of them? Or do they each have to be hooked up to their own specific pins that provide power for each phototransistor? My wiring will be greatly simplified if it's possible to run just one pin with a resistor in front of it for power, though my gut tells me that this probably won't work.