Accelerometer

FED4 Accelerometer Functionality

The FED4 has a LIS3DH accelerometer on the secondary I2C bus (address 0x19). It is currently not used by any built-in FED4 programs; the API is available for custom sketches.

API

• initializeAccel() — init sensor (called from begin()). Default: ±2g, 50 Hz, high-resolution (12-bit).
• readAccel(x, y, z) — read acceleration in m/s², remapped to device axes (x = left/right, y = forward/back, z = up/down).
• getAccelEvent(&event) — raw chip axes via sensors_event_t.
• setAccelRange(...), setAccelDataRate(...), setAccelPerformanceMode(...) — configure range (±2/4/8/16 g), rate (1–400 Hz), and mode (low-power / normal / high-res).
• accelDataReady() — true when new data is available.

See FED4_Accel.cpp. Example: FED4-Accel-Test.