Need some help here. I have never worked with photocouplers before, so this is totally new for me. Ive connected a nec 2501 to control an input to arduino from my car. it should read a car switch (12-15v) on/off. Connected like this: Car 12 -> anode cathode -> 1k resistor -> GND Arduino 3.3v -> …

Nec 2501 photocoupler

Topic		Replies	Views
4N25 with signal off the emitter? General Electronics	10	4786	May 6, 2021
Calculating resistor(s) for photocoupler General Electronics	7	7020	May 6, 2021
Fotoaccopiatore 4N25: domanda di elettronica di base Generale	9	2372	May 7, 2021
Correct optocoupler output emitter configuration +ve ground circuit General Electronics	10	2488	May 6, 2021
help with optocouplers General Electronics	9	7302	May 6, 2021