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by sbfitzgerald
Tue Mar 22, 2016 9:19 pm
Forum: Off topic discussion
Topic: Connecting a NPN Photoelectric light sensor
Replies: 4
Views: 1404

Re: Connecting a NPN Photoelectric light sensor

Oh, and thanks for the reply!
by sbfitzgerald
Tue Mar 22, 2016 9:18 pm
Forum: Off topic discussion
Topic: Connecting a NPN Photoelectric light sensor
Replies: 4
Views: 1404

Re: Connecting a NPN Photoelectric light sensor

So, if I understand this correctly, I need to get a relay with a coil voltage that works with the 10-30V power input of the sensor, and then connect the 3.3V supply of the RPi to a GPIO pin through the contacts of the relay?
by sbfitzgerald
Mon Mar 21, 2016 6:33 pm
Forum: Off topic discussion
Topic: Connecting a NPN Photoelectric light sensor
Replies: 4
Views: 1404

Connecting a NPN Photoelectric light sensor

I'd like to use a 10-30V SSP-ON-4A photoelectric sensor as an input to make a counter. 4 wire, NPN, 10-30V operating The specs are at http://www.automationdirect.com/static/specs/pe18mmss.pdf From what I can tell, the four wires are : Brown : L+ ( 10-30VDC ) Black : GND White : signal ? Blue : L- (G...

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