Micro 3-axis magnetometer - MMC5983MA - Qwiic - SparkFun SEN-19921

3-axis magnetometer in miniature version, equipped with the MMC5983MA system by MEMSIC . It is characterized by high sensitivity , RMS RMS value is 0.4 mG , which enables the heading accuracy at the level of ± 0.5 ° . The maximum data rate is up to 1kHz , the FSR is ± 8G, and the resolution is 18 bit . The module is fully integrated and has a built-in demagnetization circuit that removes any residual magnetization that is a common problem in magnetometers. What's more, the dimensions of the module are 19.1 x 7.6 mm, and there is a Qwiic connector on the board, allowing for convenient and quick prototyping without soldering.

3-axis magnetometer equipped with the MMC5983MA system.

Micro 3-axis magnetometer - MMC5983MA - Qwiic - SparkFun SEN-19921.

What is a magnetometer? What is a magnetometer for? We rush with the answer. Magnetometers are special devices that are used to very accurately determine the magnetic field - that is, to measure its direction and size. Are you wondering what you need to measure the magnetic field for? Thanks to it, you will be able to determine the coordinates and orientations of an object, e.g. a drone or a robot. Check also the article on our blog about magnetometers - Magnetometer - how does it work and what is it for?

Qwiic SparkFun is an ecosystem that includes numerous sensors based on the I2C bus , executive modules and dedicated cables. The main assumption of this solution is to improve the prototyping process. All elements supporting the Qwiic standard use a common, 4-pin JST connector with a spacing of 1 mm . This reduces the amount of space required on the PCB. It also protects against connection inconsistent with the polarity.

• Type: magnetometer
• Built-in chip: MMC5983MA by MEMSIC
• Measurement range: 3-axis X, Y, Z
• Communication interface: I2C bus and SPI interfaces
• I2C bus address: 0x30
• FSR: ± 8G
• Measurement resolution: 18 bit
• Total RMS Noise (RMS): 0.4 mG
• Course accuracy: ± 0.5º
• Maximum data rate: up to 1kHz
• Built-in temperature sensor
• Built-in degaussing circuit
• Supply voltage: from 2.8V to 3.6V
• Tile sizes: 19.1 x 7.6 mm

The compact module is used in non-standard projects.

• Manufacturer's website: SparkFun SEN-19921
• User Guide
• Technical documentation MMC5983MA
• Library MMC5983MA - Arduino
• EagleCAD files
• Tile dimensions
• GitHub repository