Magnetometers & Encoders

Two different problems, one section: knowing which way something is pointing, and knowing how far it has turned.

For heading, the RM3100 uses PNI's magneto-inductive sensing rather than a Hall sensor, which gives low noise and good stability near motors and steel. Modules are available bare or in a sealed enclosure with TTL, I2C or SPI output.

For rotation, the JY-ME01 absolute encoder resolves a full 360° with 18-bit resolution and ±0.1° accuracy over TTL, while the WTR03L is built for valve and damper position feedback with no cumulative error across multiple turns.

Both families include calibration commands and a documented protocol for PLC or microcontroller integration.