MutantW V1 – An open-source ESP32 smartwatch designed with Autodesk Fusion 360 and EAGLE

Rahmanshaber is known for its DIY Raspberry Pi handheld PCs such as MutantC v4, but MutantW V1 is a completely different device as an ESP32-based DIY open-source smartwatch that he designed with Autodesk Fusion 360 and EAGLE.

The smartwatch is equipped with a 1.7-inch IPS LCD display (non-touch), two hardware buttons, a NeoPixel RGB LED, a vibration motor, as being powered by an ESP32 SoC offers both 2.4GHz WiFi 4  Bluetooth LE connectivity.

MutantW V1 smartwatch

MutantW V1 specifications:

  • WIreless module – A.i. Thinker ESP32-S WiFi and Bluetooth module with ESP32 dual-core processor @ 240MHz with 520KB SRAM, 4MB SPI flash
  • Display – 1.69-inch SPI IPS LCD display (ST7789 driver) with 280 x 240 resolution, scratch-resistant front glass. Note: no touchscreen
  • Programming – Via 4-pin charging cable or OTA firmware upgrade
  • Misc – 2x programmable buttons, NeoPixel RGB LED, vibration motor
  • Battery – 3.7V/200mAh LiPo battery likely good for one or two days; charged with 4-pin charging cable
  • Dimensions – 44 x 40 x 12mm

ESP32-S smartwatch open-source

Everything is open-source under an MIT license including the EAGLE design files, the 3D printed case made with Fusion 360, and the firmware programmed in the Arduino IDE. All main parts can easily be purchased from Aliexpress and/or Adafruit. You’d just need to order the PCB separately, and print the plastic enclosure parts. It’s compatible with common watchbands and he used the Apple Watch wristband in the overview video below. Assembly instructions can be found in Instructables.

The MutantW V1 is not the first open-source hardware ESP32 smartwatch and joins other models such as Paul’s 3D Things Open-Smartwatch and SQFMI Watchy. The choice is even greater if you only require the ability to program the watch with your own firmware as LilyGO offers the TTGO T-Watch 2020 with variants including a microphone, or GPS. If you’d like something with longer battery life there’s also the PineTime based on Nordic Semi nRF52832 BLE SoC.


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