After the BI HALL Click Board™, a new Click Board™ also based on the Hall effect: the UNI HALL Click Board™ from MikroE. It offers the user an easy way to introduce a unipolar Hall switch to the design. The board is equipped with the Melexis US5881 unipolar Hall-effect sensor that is sensitive to north pole magnetic fields. It outputs a LOW logic level when exposed to a north-pole magnetic field, whereas a HIGH logic level when the north pole is taken away or a south pole is introduced. UNI HALL Click Board™ also features a 74LVC1T45 single-bit, dual supply translating transceiver. The board uses the MikroBUS INT line for communication with the target board microcontroller. It is designed to use either a 3.3V or 5V power supply, which is selectable through a solder jumper.
The UNI HALL Click Board™ can be utilized in countless ways by placing magnets in strategic spots. It is an ideal option to make durable push buttons or regulate RPM by mounting it on a wheel or detecting liquid level by attaching it to a float. In its simplest application, UNI HALL Click Board™ can be engaged as part of a durable contactless proximity switch.