Is it possible to program ESP32 TTGO without using USB?

zaik2rlm
Posts: 4
Joined: Wed Aug 02, 2023 4:36 am

Is it possible to program ESP32 TTGO without using USB?

Postby zaik2rlm » 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?
Attachments
TTGO-LORA32-OLED.png
TTGO-LORA32-OLED.png (439 KiB) Viewed 1735 times

username
Posts: 539
Joined: Thu May 03, 2018 1:18 pm

Re: Is it possible to program ESP32 TTGO without using USB?

Postby username » Fri Aug 11, 2023 8:36 pm

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.

zaik2rlm
Posts: 4
Joined: Wed Aug 02, 2023 4:36 am

Re: Is it possible to program ESP32 TTGO without using USB?

Postby zaik2rlm » Wed Sep 06, 2023 9:15 am

Many thanks, for your help about

Who is online

Users browsing this forum: Baidu [Spider] and 124 guests