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Author Topic: Connecting Arduino to PIC  (Read 3540 times)
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Valencia, Spain
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OK maybe a dumb question but I have to ask anyway. You do have a common ground wire connected between the arduino and the PIC, correct?

Ya beat me to it...

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I don't think you connected the grounds, Dave.
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OK maybe a dumb question but I have to ask anyway. You do have a common ground wire connected between the arduino and the PIC, correct?
Ya beat me to it...
Only two weeks later...
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Philippines
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does using the same power source not cover the common ground?..
they are parallel connected to the source..
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I think the point is that the pin marked "Input to Pic" should Not be grounded as it is also the output pin from the Arduino and would defeat the circuits proper operation.

Bob
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