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I just had a thought, Is it the processor or the regulator that is overheating?
If it is the voltage regulator, you may be drawing excessive current from the Arduino. Then an external regulator is needed. And maybe series resistors for the outputs if you are drawing too much current from them.
That is why I've been asking for circuit info as you may be over stressing the Arduino but you still have not given any info as to what circuit configuration you are driving. Like if you are driving a relay directly, or even a transistor BE junction to ground.
Also, are you getting over volts signals back to the Arduino.
Still, I wish you well and it is your choice if you share info or not.
If it is the voltage regulator, you may be drawing excessive current from the Arduino. Then an external regulator is needed. And maybe series resistors for the outputs if you are drawing too much current from them.
That is why I've been asking for circuit info as you may be over stressing the Arduino but you still have not given any info as to what circuit configuration you are driving. Like if you are driving a relay directly, or even a transistor BE junction to ground.
Also, are you getting over volts signals back to the Arduino.
Still, I wish you well and it is your choice if you share info or not.
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