Uploaded November 2025 | Updated September 2026, 2 weeks ago
This video is sponsored by PCBWay. Only $5 for 10 PCBs and Only $4.98 for 3D Printing + Express 24 hour service on pcbway.com ⭐ WB3S is Wi-Fi module from Tuya devices. It is with the Beken BK7231T microcontroller. It has 15 GPIOs (6x PWM, 2x UARTs, 1x ADC). It is worth to note that WB3S has the same layout and pins like AI-Thinker ESP12 modules with ESP8266. ESPHome port for WB3S and BK7231T is based on top of the open source LibreTiny PlatformIO development platform. In this video I share my experience with designing an open source hardware WB3S breakout board for breadboard prototyping, building and flashing ESPHome firmware as well as demonstrating it. The breakout board has been designed with KiCad.
wb3s_demo.yaml for ESPHome:
gist.github.com/leon-anavi/590df917d0a5ca444a75043dfb155867
Note: replace "SSID" and "PASSWORD" with your Wi-Fi credentials
WB3S Breakout Board: github.com/AnaviTechnology/anavi-wb3s-breadboard
* Activate Python3 virtual environment:
python3 -m venv venv
source venv/bin/activate
* Install ESPHome framework:
pip3 install esphome
* Check ESPHome version:
esphome version
pip3 install ltchiptool
* Build the ESPHome firmware:
esphome compile ~/wb3s_demo.yaml
* Flash the ESPHome firmware on WB3S:
ltchiptool flash write -d /dev/ttyACM0 .esphome/build/wb3s-demo/.pioenvs/wb3s-demo/firmware.uf2
🔗 Useful Links
===
esphome.io
https://docs.libretiny.eu/boards/wb3s/
https://docs.libretiny.eu/
gist.github.com/leon-anavi/590df917d0a5ca444a75043dfb155867
github.com/AnaviTechnology/anavi-wb3s-breadboard
Exploring ESPHome on WB3S Module with Beken BK7231T Microcontroller and Our New Open Source Breakout Board
https://blog.anavi.technology/exploring-esphome-on-wb3s-module-with-beken-bk7231t-microcontroller-and-our-new-open-source-breakout-board/
📚 Chapters
===
0:00 Intro
1:04 PCB
2:57 WB3S
7:42 ESPHome
12:10 Demo
13:49 Advantages
14:20 Disadvantages
15:14 Conclusions
This video is sponsored by PCBWay. Only $5 for 10 PCBs and Only $4.98 for 3D Printing + Express 24 hour service on pcbway.com ⭐ WB3S is Wi-Fi module from Tuya devices. It is with the Beken BK7231T microcontroller. It has 15 GPIOs (6x PWM, 2x UARTs, 1x ADC). It is worth to note that WB3S has the same layout and pins like AI-Thinker ESP12 modules with ESP8266. ESPHome port for WB3S and BK7231T is based on top of the open source LibreTiny PlatformIO development platform. In this video I share my experience with designing an open source hardware WB3S breakout board for breadboard prototyping, building and flashing ESPHome firmware as well as demonstrating it. The breakout board has been designed with KiCad.
wb3s_demo.yaml for ESPHome:
gist.github.com/leon-anavi/590df917d0a5ca444a75043dfb155867
Note: replace "SSID" and "PASSWORD" with your Wi-Fi credentials
WB3S Breakout Board: github.com/AnaviTechnology/anavi-wb3s-breadboard
* Activate Python3 virtual environment:
python3 -m venv venv
source venv/bin/activate
* Install ESPHome framework:
pip3 install esphome
* Check ESPHome version:
esphome version
pip3 install ltchiptool
* Build the ESPHome firmware:
esphome compile ~/wb3s_demo.yaml
* Flash the ESPHome firmware on WB3S:
ltchiptool flash write -d /dev/ttyACM0 .esphome/build/wb3s-demo/.pioenvs/wb3s-demo/firmware.uf2
🔗 Useful Links
===
esphome.io
https://docs.libretiny.eu/boards/wb3s/
https://docs.libretiny.eu/
gist.github.com/leon-anavi/590df917d0a5ca444a75043dfb155867
github.com/AnaviTechnology/anavi-wb3s-breadboard
Exploring ESPHome on WB3S Module with Beken BK7231T Microcontroller and Our New Open Source Breakout Board
https://blog.anavi.technology/exploring-esphome-on-wb3s-module-with-beken-bk7231t-microcontroller-and-our-new-open-source-breakout-board/
📚 Chapters
===
0:00 Intro
1:04 PCB
2:57 WB3S
7:42 ESPHome
12:10 Demo
13:49 Advantages
14:20 Disadvantages
15:14 Conclusions
