Back in May, LilyGo started selling “Paul’s 3D Things” Open-Smartwatch open-source hardware ESP32 watch as a kit with the board and a round display, but no case, wristband, or battery, although now a smartwatch kit, but still without battery, is available for around $30.
The company has now designed the T-Watch 2021 which builds upon the Open-Smartwatch but adds features like a touchscreen display, a vibration motor, a magnetometer, and ships as a devkit with board and display or a complete smartwatch kit including a 500mAh battery.
T-Watch 2021 specifications:
- Wireless module – LILYGO T-micro32 module based on ESP32-PICO-D4 module with dual-core ESP32 processor, 4MB FLASH, 2MB PSRAM, ceramic antenna and u.FL antenna connector
- Connectivity – Bluetooth 4.2 BR/EDR BLE and WiFi 4 2.4GHz 802.11 b/g/n
- Display – 1.3-inch circular touchscreen LCD with 240×240 resolution (Model GC9A01)
- USB – Micro USB for charging and programming
- 3-axis BMA423 accelerator, pedometer
- QMC5883L 3-axis magnetometer, compass
- Programming and debugging –
USB to TTL via CH340E chipVia USB-C port using T-U2T USB to serial dongle
- Misc -Reset button, Boot button, 2x user buttons, DS323M RTC, vibration motor
- Power Supply
- 5V/1A power input via USB Type-C port
- 2-pin JST connector for the battery
- Battery charging and discharging protection chip (MCP73831)
- Note: typical battery life should probably be around one day
The 3D files, Arduino samples, and a fork of Paul’s Open Smartwatch firmware can be found on Github. There’s no obvious reference in the documentation and product page that it is a derivative project from Paul’s 3D Things design, and the project is not open-source hardware at this time since the KiCAD design files (schematics, PCB layout, etc…) have not been released.
Liliygo T-Watch 2021 is sold for between $25.49 and $35.29 depending on the selected options. The full watch kit with the battery minus the T-U2T USB to serial dongle
sells for $30.98.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.