Is it possible to program ESP32 TTGO without using USB?
Posted: Fri Aug 11, 2023 6:44 am
Is it possible to program an ESP32 TTGO LoRa32-OLED card using a serial port or an alternative to USB as it does not work?
Yes, all you need is to use Tx,Rx, GPIO0 & Reset.
Get yourself one of these and connect the wires to your board.
https://www.digikey.com/en/products/det ... G/10259352
Or, if you have a simple USB to serial cable like one of these you can do it as well.
https://www.amazon.com/DIYmall-Adapter- ... TCC6&psc=1
If using the later you only need 3 connections. Tx, Rx & Gnd, Hold RST & GPIO0 low, then release RST while keeping GPIO0 low, then release GPIO0. This will put it into programming mode. Then start your upload.