OpenWear based on the ESP32-Pico-D4, it is used to replace the Lilypad, Ciruit Playground, and more. Supports Bluetooth and Wifi, and we have also integrated common sensors on the development board. These sensors include a power management chip (MCP73831T-2ATI/OT) for managing Li-Po batteries, a light sensor (ALS-PT19-315C/L177/TR8), and a temperature and pressure sensor (BMP280) for environmental monitoring. It also has a 6-axis gyroscope (LSM6DS3TR) for motion recognition and an RGB LED for output.

Meanwhile we designed two holes on the PCB for embedding magnets. We also designed corresponding fixing tabs for magnetic fixing. So that the development board can be quickly fixed on the clothing!

This is my HCI research project to rapidly build wearable prototypes. It is our first result and our goal is to design a whole system including development boards, modules with connecting wires. Looking forward to feedback!

Pinout:

Magnets and fixing pad: