LilyGo TTGO ESP32-C3 ESP-01 Replacement Module (T-01C3)
LilyGo TTGO ESP32-C3 ESP-01 Replacement

Available from:


GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 User
GPIO03 LedLink
GPIO04 None
GPIO05 None
GPIO06 None
GPIO07 None
GPIO08 User
GPIO09 User
GPIO010 User
GPIO011 None
GPIO012 None
GPIO013 None
GPIO014 None
GPIO015 None
GPIO016 None
GPIO017 None
GPIO018 None
GPIO019 None
GPIO020 User
GPIO021 User
Configuration for ESP32-C3

This is pin compatible with ESP-01(S) modules.

Onboard LED is on GPIO03 and is defined as LedLink in the template.


Flash using Tasmota Web Installer and select Tasmota ESP32-C3 option.

For esptool.py download f.e. tasmota32c3.factory.bin and run esptool.py write_flash 0x0 tasmota32c3.factory.bin

To put ESP32-C3 in flash mode GPIO8 needs to be pulled high and GPIO9 pulled low. Some devices have that by default.

You can purchase (AliExpress, Amazon, Banggood) a test board for effortless flashing.

Test Board

Hold the BOOT button while powering the device to put it in flash mode.