If I had an industrial sensor(proximity sensor) from 0V to 24V or 4 to 20mA, how can I do it to connect it to the analog input form my particle photon analog input? I will appreciate your help!!!

You can get these little pre-built 4-20mA to voltage converter modules from lots of sources: [image] Current to Voltage Signal Transmitter 4-20mA to 0-3.3V/5V/0-10V/0-15V Converter ... Adjust the potentiometer knob is best accomplished with glue. 4, zero and span can be adjusted (potentio…

@jonamleonel Do you have a multimeter and a collection of resistors? Hook the sensor up to 24V according to the datasheet. Next connect the ground connection of the 24V power supply to your Photon’s ground. That leaves connecting the sensor output to the Photon. You cannot feed 24V to a Photon inpu…

Thanks @jenschr but I am looking for a linear voltage output. Do you know some IC ?

Here is a reference post for isolated 4-20mA signal conversion. http://forum.arduino.cc/index.php?topic=167973.msg1250701#msg1250701 Optoisolators can also be used with your voltage divider. Also, check your resolution criteria. The analogRead pins have a resolution of 3.3 volts / 4096 units. Y…

@jonamleonel if you Google the words Industrial Proximity Sensor, you’ll see what I thought you had - an inductive sensor that is either high (24V) or low (0V). For more specific advice, I’d need to know what component you’re using :slight_smile:

Industrial Sensor + Particle Photon

Hardware

bko April 15, 2017, 1:03pm 6

You can get these little pre-built 4-20mA to voltage converter modules from lots of sources:

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Industrial Sensor + Particle Photon

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