Hi I received this ESP32 board, but I can’t perform the first flash through USB. I plugged it in the USB port of my Raspberry Pi 3, host of Home Assistant OS. From the ESPHome add-on, I followed the tutorial for the first configuration, but the board doesn’t show up in the serial ports available. …

I went through this, only to realize that the USB cable I was using is either power/charge only, or maybe just broken. The obvious way to validate the cable is okay is to plug something else in that you know works.

tom_l December 2, 2021, 11:10pm 2

Having problems with ESP32 ESPHome

Are you running windows on your laptop? If so this utility is is handy for notifying you of new com ports without having to drill down into device manager: https://helmpcb.com/software/serial-port-monitor It can be tricky to get ESP32s into boot mode. i) Power on / connect the ESP ii) Start the flash tool connecting iii) Press and hold both buttons on the ESP board iv) Release the EN button while continuing to hold the IO0 button v) When the flash tool discovers the device you can relea…

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ESP32 not showing up on USB serial