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By dscott
#88527 Do you need the serial for debugging purposes? I personally use gpio pins 0, 1(TX), 2, 3(RX) all the time with no issue except for the fact I can't write to the serial monitor. Just set their pinMode to OUTPUT and use them like any other. Putting the Esp01 in programming mode completely ignores your pinMode setup. Of course, you can always try tapping other pins directly if you're up for it... I have 10 GPIO's with one of my ESP01's. For what its worth :/