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Forum 4-20mA Input To Microcontroller

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4-20mA Input To Microcontroller

meera_hussien 6 months ago

What is the best practice to create a 4-20mA input that can be feed in to microcontroller ADC pin?

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Steve524 6 months ago +2

This may work for you :Current to Voltage Converter Module 0/4-20mA to 0-3.3V 0-5V 0-10V Voltage Transmitter Signal Conversion Conditioning Board www.amazon.com/.../B0BL3YM7RM
robogary 6 months ago +2

A 500 ohm resistor across the 4-20mA creates a 2-10v input. 250 ohm for 1-5v input. Use code to check for a value below 1 or 2v (open). If the signal is bipolar, 6v becomes zero, 10v full scale, 2v full…
michaelkellett 6 months ago +1

You need to read up on 4-20mA interfacing - lots of stuff on the web. There are many ways to make a 4-20mA input to a micro - it's often simpler simpler to use an external ADC combined with the 4-20mA…

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0 Steve524 6 months ago

This may work for you :Current to Voltage Converter Module 0/4-20mA to 0-3.3V 0-5V 0-10V Voltage Transmitter Signal Conversion Conditioning Board

www.amazon.com/.../B0BL3YM7RM
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0 meera_hussien 6 months ago in reply to Steve524

Thanks for the info Steve524
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0 meera_hussien 6 months ago in reply to Steve524

Thanks for the info Steve524
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