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Topic: 4-20ma output from Arduino (Read 47711 times) previous topic - next topic


Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter


I want to make my arduino mimic an industry standard 4-20ma sensor.

I understand that the load that it will drive (PLC, VSD, etc) are usually around 100 ohms.

Has anyone got any ideas on the circuit that would be required to do this?
@lemming, it's been a while since you started this thread, but did you end up with success? I am limited by time and have no experience with building circuits, so the best I can come up with is this transmitter (but they are pricy.)


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