Help connecting a FS-N18 dual digital fiber optic amplifier
Trying to connect a fiber optic amplifier to my arduino uno, and I wanted it to read the digital input of the sensor and notify when something is in front. The sensor detects when something is in front correctly (indicated by the led on the sensor) but the arduino is having difficulties detecting this.
Anyone have any guesses on how I can proceed?
Also since the power supply for the sensor is 12v, I put a voltage divider in the circuit. Does that look correct (forgive me I am fairly new at this)?
resistor on the left is 10k and the one on the right is 5k1
4 Replies
as I read it the output is NPN open collector, you just need a 10K to 5v
ah ok, so no voltage divider needed? I believe I tried that and it was similar results from above. Let me try it again and I'll get back to you.
the device ground and arduino ground need to be in common
the "open collector" NPN can only "connect to ground" (LOW), the 10K "pulls" the output HIGH to whatever Vcc you like (as long as it is <=24v)
perfect, I got it to work based on what you said. Thanks for the help.