![]() A dev board typically includes some sort of USB to serial converter chip (sometimes refered to as FTDI). Don't just check if it charges your phone, but check if you are actually able to transfer data.Ģ) The USB connection is not handled by the ESP32, as an ESP32 only has serial lines (rx and tx), no USB. So make sure you have a 'real' USB cable by testing it on another device. ![]() If you would use a cable like that, the result would be what you described. I assume these have only 2 out of 4 wires: ground and +5V, but no data lines. ![]() ![]() Apart from what kolban said, I would like to add two comments:ġ) Nowadays there are a lot of cheap (Chinese) USB cables that can only be used for charging or powering devices.
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