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Topic: Arduino, two buttons powering and digital inputs in the same time (Read 1 time) previous topic - next topic


Using opto-couplers?

:smiley-eek:  :smiley-eek:  :smiley-eek:  Ridiculous!  :smiley-eek:  :smiley-eek:  :smiley-eek:

Use the resistors.  One fiftieth of the cost, one fiftieth of the space, perform the job perfectly.

But uhm, looks like a bazooka to kill a mosquito....

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