I have a sensor with a PCB board on which there are two diodes. I'd like to detect when the diodes are on and off.
- OFF: 0.58V
- ON: 1V
- OFF: ~ 0V
I tried using an https://uk.rs-online.com/web/p/products ... lsrc=aw.ds, but it doesn't work with any of the diodes. The voltage on the green diode goes down to 1V when the optocoupler plugged in.
Would a transistor be better for this application (doesn't require a strong signal)?
Thanks for any help!