[4-20mA Sensor][Arduino R4]Troubles reading the voltage with analog read

@johnerrington I think I may have seen an SMPS before, somewhere. Thanks for pointing out some of the basics, though. Much appreciated. I'll study this "DC" you mentioned some more.

:roll_eyes:

youre welcome.

For applications like this an unspecified PSU is like a camel without a starting handle.

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