Hi guys I have a problem with my ph module diymore hc4502 When i test the output of the module with a multimeter i get a stable value For exmple ( ph 7 = 2.5 volt) But when i use analog read of arduino iget unstable reading .The value changes between 2.4 and 2.6 Any solution to fix this proble…

Unstable ph value

Railroader September 9, 2021, 11:16am 2

What does the specification, the data sheet, promise?
Schematcics please. Decoupling caps used?

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