OpenPrintSense - 3D Printed BLE Flex Sensor Glove

OpenPrintSense - 3D Printed BLE Flex Sensor Glove OpenPrintSense is an open-source project that combines 3D printing, hardware, and software to create a wearable finger tracking system. The key innovation is a fully 3D-printed flex sensor that uses conductive TPU filament - as the sensor bends, its electrical resistance changes, allowing precise measurement of finger flexion. Data is transmitted wirelessly via BLE to an Android smartphone. How It Works: The 3D-printed sensor combines flexible TPU with conductive filament. When you bend your finger: The conductive filament stretches This increases the electrical resistance The microcontroller reads the resistance change via analog input The bend angle is calculated and sent to the app Use Cases: 🎮 Gesture-based game controllers 🤖 Robot hand control 🏥 Rehabilitation therapy tracking 🎵 Musical instrument interfaces 📊 Motion capture for research Electronics: Microcontroller: Seeed XIAO nRF52840 Sense Power: USB-C or 3.7V LiPo battery Wires: For connecting sensor to microcontroller 3D Printing Materials: Flexible Base: Bambu Lab TPU 90A - Flexible structure Conductive Element: Recreus FilaFlex Conductive - Variable resistance sensing Read the GitHub for more information on assembly and functionality: https://github.com/PaBu04/OpenPrintSense