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Update how_to_flash.md #11

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Expand Up @@ -166,7 +166,7 @@ status_led:

## Flashing

For flashing you need a USB-to-serial adapter that supports 3.3V and has the required pins. The board includes an auto-reset circuit so you don't need to manually ground GPIO0 or press any buttons during flashing. The rest of the flashing process is identical to other ESP32 and ESPHome devices.
For flashing you need a USB-to-serial adapter that supports 3.3V and has the required pins. The board includes an auto-reset circuit so you don't need to manually ground GPIO0 or press any buttons during flashing if you have an adapter with DTR and RTS. If not, you need to manually ground GPIO0. The rest of the flashing process is identical to other ESP32 and ESPHome devices.
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Hi @FloMeyer !

You're right, you can also flash the ESP32 by connecting GPIO0 to GND. But GPIO0 is not easily accessible on the board and your text doesn't contain all the details a beginner might need so I would change it a bit.

In theory it should be possible to ground GPIO0 by connecting DTR to GND and RTS to 3V3 while powering on the board. Could you try if this works for flashing the board? That would make it easier than connecting directly to the ESP's GPIO0.

To keep things easier to read, I would add the following text in a new paragraph below the one you edited:

If your adapter doesn't have DTR and RTS pins you can instead connect DTR to GND and RTS to 3V3 while powering on the board. You may also need to manually disconnect and reconnect power for each flashing attempt when using this method.


| USB-to-serial adapter | Programming header of the board |
| --------------------- | ------------------------------- |
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