It's time to start utilizing the superior magnetometer, and what better way than to throw it onto an easy-to-use breakout board? The SparkFun MLX90393 Magnetometer Breakout is a triple-axis magnetic sensor board capable of sensing very small fields, while still behaving as one would expect during saturation in larger fields (like a nearby magnet). The MLX90393 breakout can be used as a compass sensor but also works well as a non-contact controller, a flow meter with a magnetic impeller, or a linear actuator position sensor. To make it even easier to to get your readings, all communication is enacted exclusively via I²C, utilizing our handy Qwiic system. However, we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.

The MLX90393 features a resolution rate of 0.161µT with an operating voltage range of 2.2V to 3.6V at 100µA. This breakout is also equipped with a couple of jumper pads on the back of the board, a set that allows you to change the I²C address as well as one that can put the breakout into SPI mode (if I²C isn't your cup of tea).

Note: The I²C address of the MLX90393 is 0x0C and is jumper selectable to 0x0D, 0x0E, or 0x0F. A multiplexer/Mux is required to communicate to multiple MLX90393 sensors on a single bus. If you need to use more than one MLX90393 sensor consider using the Qwiic Mux Breakout.

The SparkFun Qwiic connect system is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

• Operating Voltage: 2.2V-3.6V
• Current Consumption: 100µA (Typ.)
• Operating Temperature: -20°C - 85°C
• Resolution: 0.161µT
• Max Full Scale Resolution: 44,000µT
• I²C Address: 0xC0
• 2x Qwiic Connection Ports

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (MLX90393)
• Arduino Library (Special thanks to Ted Yapo!)
• Qwiic Page
• GitHub