The Keyestudio micro bit honeycomb hall magnetic sensor is fully compatible with micro bit control board. In the experiment, we connect it with the micro: bit by a crocodile clip. There are 6 sockets on it, 2 G, 2 V and 2 S are connected. Additionally, G is GND, VV is VCC, and S is the signal end of the module.
During the test, we test the analog value of S end via micro: bit control board. The analog value read is decreasing fast when the nearby magnetic field is detected.