Magnet

FED4 Magnet (Magnetometer) Functionality

The FED4 has an MLX90393 magnetometer on the secondary I2C bus (address 0x0C). It is currently not used by any built-in FED4 programs; the API is available for custom sketches.

API

• initializeMagnet() — init sensor (called from begin()). Uses configureMagnet() with default gain (5×).
• readMagnetData(x, y, z) — read magnetic field (µT) into float refs. Returns true on success.
• getMagnetEvent(&event) — raw data via sensors_event_t.
• setMagnetGain(...) / getMagnetGain() — configure or read gain (e.g. MLX90393_GAIN_5X).
• configureMagnet(gain) — set gain, resolution, oversampling, and filter (default 5× gain).

See FED4_Magnet.cpp. Hardware: Adafruit MLX90393, Adafruit library.