ESP IDF

Update over the serial connection using a serial-to-USB adapter: CH340, FTDI FTR232,  CP2102/2104, PL2303… Some adapters can be switched between 3.3V and 5V for the data pins, but still provide 5V on the power pin which will irreparably destroy your device. You MUST make sure the data (RX and TX) logil level 3.3V and VCC pins are…