esp not responding to AT commands and not flashable

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Re: esp not responding to AT commands and not flashable

By schufti
- Wed Jan 06, 2021 4:41 am #90093 as allready written, one series resistor is sufficient protection if carefully selected. This resistor limits the current flowing through the pins internal protection diode (so feeding 5V to the rest of the chip), start with a high value ~22k and see if you get stable communication even with high baudrate; if not select the next lower resistor value...
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