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The Hall sensor is a magnetic field sensor fabricated according to the Hall effect. When the magnet is close to the Hall sensor, the sensor generates a potential difference called the Hall voltage, so we can determine whether the magnet is detected. This Hall sensor adopt alligator clip connection that requires only three crocodile clips to connect to a micro:bit board or expansion board. We also reserved 4 pin headers on the module, which can be expanded after welding. Users can use it to complete creative games, such as magnet alarms or mine-sweeping games.
Hall module *1