OpenPrintSense | 3D Printed BLE Flex Sensor Glove
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OpenPrintSense combines 3D printing, hardware, and software to create a wearable finger tracking system.
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- Printables
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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
Have fun building the project!
Stay ceative!