RGB led project issues.

Hello all, I am currently working on a project with common anode RGB LEDs while trying to use my PWM ports as the ground to control the LEDs. I understand the concepts behind how this should work, I, however, haven't been able to find any information about what the maximum current a port on the Arduino can handle when being used as an input. Any clarification would be a wonderful help, Cheers.

40mA absolute max.

Nothing to do with Covid, though

@tryingmybesthere

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tryingmybesthere:
I, however, haven't been able to find any information about what the maximum current a port on the Arduino can handle when being used as an input.

No wonder. An Arduino port used as an input does not draw any significant current at all. :roll_eyes:

Well, if it is used with a pinMode of INPUT_PULLUP and connected to ground, it will supply approximately 100 µA corresponding to a pullup "resistance" value of approximately 47k.