# device — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link.

**3 device listed.**

## 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.

[Details](https://openhardware.directory/devices/circuitmess-clockstar-2-0) | [Markdown](https://openhardware.directory/devices/circuitmess-clockstar-2-0/md)

## CircuitMess NASA Artemis Watch 2.0

NASA-themed programmable smartwatch powered by ESP32-S3 with BLE 5.0, 6-axis IMU, ST7735S display, and activity tracking. Pre-assembled and ready to code.

[Details](https://openhardware.directory/devices/circuitmess-nasa-artemis-watch-2-0) | [Markdown](https://openhardware.directory/devices/circuitmess-nasa-artemis-watch-2-0/md)

## Adafruit Feather nRF52840 Sense

Sensor-rich BLE Feather with Nordic nRF52840 (64MHz Cortex-M4F), 6 onboard sensors (9-DoF IMU, magnetometer, proximity/light, PDM mic, humidity, barometric pressure), 21 GPIO, and FCC/IC/TELEC certified.

[Details](https://openhardware.directory/devices/adafruit-feather-nrf52840-sense) | [Markdown](https://openhardware.directory/devices/adafruit-feather-nrf52840-sense/md)