Seeed grove motion sensor control and actuator modules seeed studio 101020034 the grove 3 axis digital compass from seeed studio uses magnet resistive sensors and a 12 bit adc to provide compass bearings with an accuracy between 1 and 2 it automatically performs offset cancellation and degausing internally plus its on board regulator means it can operate between 33 and 6v dc the compass connects to the host microcontroller via i2c and can provide up to 116 samples per second seeed pro