ESP8684-WROOM-03 ESP32-C2 TYWE2S Replacement Module (ESP8684-WROOM-03)
ESP8684-WROOM-03 ESP32-C2 TYWE2S Replacement

Available from:

GPIO #Component
GPIO00 None
GPIO01 User
GPIO02 None
GPIO03 User
GPIO04 User
GPIO05 User
GPIO06 User
GPIO07 User
GPIO08 None
GPIO09 User
GPIO10 None
GPIO11 None
GPIO12 None
GPIO13 None
GPIO14 None
GPIO15 None
GPIO16 None
GPIO17 None
GPIO18 None
GPIO19 None
GPIO20 User
GPIO21 User
Configuration for ESP32-C2
This module can replace modules such as: BT2S, CB2S, ESP-02S, FL_M99_V1, TYWE2S, TYZS6, TW-02, WR2, WB2, WBR2, WBR2D, WR2E, WB2S, WA2, XT-BL02, ZS2S

ESP8684 is the new nomenclature for ESP32-C3 based modules. There are two different versions of this module:

  • ESP8684-WROOM-03-H4 with 4Mb flash
  • ESP8684-WROOM-03-H2 with 2Mb flash is not recommended for Tasmota due to low flash space.


There are no official binaries for ESP32-C2. You need to compile your own using tasmota32c2-arduino30 environment in Platformio.

To flash with esptool.py download the created tasmota32c2-arduino30.factory.bin from /build_output/firmware and run esptool.py write_flash 0x0 tasmota32c2-arduino30.factory.bin

To put ESP32-C2 in flash mode GPIO8 needs to be pulled high and GPIO9 pulled low.



For normal operation connect EN to VCC (pull high) to enable the chip. GPIO9 has an internal pullup and it needs to be high on power up for the module to boot so try and avoid that pin similar to GPIO0 on ESP8266.

ESP32’s are power hungry on boot and the USB to serial adapter might not be able to provide enough power for that. Use a stable 3.3v power supply that can supply more than 500 mA.