Running ESPHome on a Mysterious WB3S Wi-Fi Module with Beken BK7231T #esphome #wb3s #beken #bk72xx
Published at : 18 Dec 2025
This video is sponsored by PCBWay. Only $5 for 10 PCBs and Only $4.98 for 3D Printing + Express 24 hour service on http://www.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.