mohan-bee/fitness-band-sensor-flex

A flexible dual-sensor PCB integrating a MAX30102 optical PPG/heart-rate sensor and TMP117 digital skin-temperature sensor, with I²C, power regulation, decoupling capacitors, interrupt pull-up, flex-tail connector, test points, and mechanical stiffeners/bend support.

Version: 0.0.1
License: unset
Stars: 0

README.md

# Fitness band sensor flex

Standalone 36 × 14 × 0.12 mm, two-layer polyimide sensor board with MAX30102EFD+T and TMP117AIDRVR. This package contains only the flex board. Its eight-contact harness connects to the separately published fitness-band main board.

![Native top copper](manufacturing/flex-top.png)

The tscircuit entry point is index.circuit.tsx. The finished native KiCad design and fabrication artwork shown above are in manufacturing/flex; the live source build reroutes the sensor region and can differ from the frozen fabrication copper. Use manufacturing/flex-fabrication.zip and the supplied process instructions for fabrication review.

The manufacturing documents include assembly-system context for connection to the separate main board. No main-board source or fabrication files are included here. JLCPCB DFM acceptance and physical first-article validation are pending. The flex requires explicit coverlay/stiffener layer mapping, nonstandard small vias and reflow support; a successful website build does not approve manufacturing.