OM-Dev-Kit

# OpenMuscle Dev Kit

Hardware and firmware for the **OpenMuscle Dev Kit** (V0/V1), the bench platform used to prototype and validate OpenMuscle's pressure-sensing cells before they go into wearable arrays like [FlexGrid](https://github.com/Open-Muscle/OpenMuscle-FlexGrid).

Part of the [OpenMuscle](https://github.com/Open-Muscle) open-source neurotech ecosystem. See [openmuscle.org](https://openmuscle.org) for the project background.

## What's here

```
Micropython/        MicroPython firmware, organized by sensor cell
  Cell 00 .. Cell 05    Per-cell code
  Open Muscle Dev Kit V0 Cell Numbers Addresses.xlsx   Cell -> I2C/bus address map
PCB/                KiCad hardware design
  OM-EPSC3-Micro.*      ESP32-C3 micro controller board (schematic, layout, 3D)
  OM-DEV-Kit.*          Dev kit carrier board
  OM-ESPC3-Micro-Gerb/  Fabrication gerbers
  OpenMuscleDevKit.pretty/   Custom KiCad footprint library
  TRRS Footprint/       TRRS connector footprint (single-wire power + data)
  *.svg                 Edge-cut and artwork exports
```

## Hardware at a glance

- **MCU:** ESP32-C3 (`OM-EPSC3-Micro` board)
- **Sensing:** multiple addressable pressure-sensing cells (see the cell address spreadsheet)
- **Interconnect:** TRRS connector for chained power + data between cells
- **CAD:** KiCad project files, gerbers, and STL included for fabrication

## Firmware

Each `Cell NN` directory holds the MicroPython for one sensor cell. The accompanying spreadsheet maps cell numbers to their bus addresses so a host can poll the array. Flashing and OTA follow the same pattern as other OpenMuscle devices via [ugit](https://github.com/turfptax/ugit).

## Status

This is an early dev-kit snapshot (V0/V1). It is preserved as a reference design; active sensor development continues in the [OpenMuscle organization](https://github.com/Open-Muscle).

## License

See the [OpenMuscle](https://github.com/Open-Muscle) project for licensing.