CircuitMess ClockStar 2.0
DIY smartwatch kit powered by ESP32 with ST7735S display, 6-axis IMU, Bluetooth connectivity, and programmable via CircuitBlocks visual coding environment.
$140.00
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Specifications
Components
Espressif ESP32 dual-core Xtensa LX6 microcontroller running at 240MHz with WiFi 802.11 b/g/n and Bluetooth 4.2 LE. 520KB SRAM, 4MB flash.
Sitronix ST7735S TFT LCD controller driving a 128×128 pixel color display over SPI interface at 40MHz.
STMicroelectronics LSM6DS3TR-C 6-axis IMU providing 3D accelerometer and 3D gyroscope data over I2C. Features wrist tilt detection, tap recognition, and significant motion detection for smartwatch use.
Bus Interfaces
GPIO Map
Overview
The CircuitMess ClockStar 2.0 is a DIY smartwatch kit that teaches electronics assembly and programming through hands-on building. Powered by an ESP32 dual-core microcontroller, it features a 128×128 color TFT display, a 6-axis IMU with accelerometer and gyroscope, Bluetooth connectivity for pairing with smartphones, and an RGB notification LED.
Assembly takes approximately one hour with step-by-step instructions and 100+ photos. Once built, the watch displays time, date, alarms, and stopwatch functions. It connects to the CircuitMess mobile app to mirror smartphone notifications.
The watch is fully programmable through CircuitBlocks, a visual block-based coding environment that generates Arduino-compatible code. Users can create custom watch faces, animations, and interactive applications like a gyroscope-controlled balance ball game. Advanced users can program directly in C++ using the Arduino IDE or ESP-IDF framework.
Use Cases
4smart-watch
Wearable
Body-worn computing devices including smartwatches, fitness bands, and health monitors.
STEM Education
Educational kits and boards designed to teach science, technology, engineering, and math concepts through hands-on projects.
Educational Platform
Development boards suitable for teaching programming, electronics, and embedded systems concepts.
Where to Buy
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