Hall Sensor DRV5056A4QDBZR – RAKwireless RAK12044

The RAKwireless RAK12044 adds a compact Hall effect sensor to the WisBlock ecosystem for precise position and magnetic field sensing. It is based on the Texas Instruments DRV5056A4QDBZR and responds proportionally to magnetic flux density from a magnetic south pole, making it a practical building block for contactless position measurement using magnets—robust, wear-free, and easy to integrate into small devices.

The module is suited for applications where repeatable position, movement, or state changes can be derived from magnetic field variations. Practical use cases include:

Precise position sensing: linear/rotary position measurement with magnets in mechanical assemblies

Industrial automation and robotics: end-stop detection, state sensing, and position feedback

Home appliances: contactless position/state sensing in doors, flaps, and mechanisms

Human interface devices: gamepads, pedals, keyboards, triggers using magnet-based travel sensing

Leveling/tilt/weight measurement: magnet-based setups (application dependent)

Flow rate measurement: magnet-based mechanisms (application dependent)

Medical devices: position/state sensing (requires system validation)

Current sensing: magnetic-field-based approaches (system dependent)

Magnetic field data is output via I2C. The text states 15 mV/mT sensitivity and a 155 mT range. The module runs from 3.3 V, is compact (10 × 10 mm), and is intended to mount on a WisBlock Base and be used with a WisBlock Core module. A software library and tutorial are also mentioned for faster evaluation.