4 years, 5 months ago.

F303K8 ADC noise when using external 5V power

Hi,

I'm using the following analog pins:

PA0 PA1 PA3 PA4 PA5 PA6

When I power the board from USB the values read in seem stable,if I set the jumpers to power from an external +5V the values read become unstable.

Are there jumper settings I am missing that would rectify this problem?

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