COMPASS MAGNETOMETER SENSOR

General Description:

HMC5883L 3-axis Electronic Compass Module Magnetic Field Sensor - The Original Chip is designed for low-field magnetic sensing with a digital interface and it is perfect for giving precise heading information. The sensor converts any magnetic field to a differential voltage output on 3 axes. This voltage shift is the raw digital output value, which can then be used to calculate headings or sense magnetic fields coming from different directions.

Working Principle:

The HMC5883L module operates on the principle of magneto-resistive sensing. Its three-axis sensor detects changes in the surrounding magnetic field, converting them into digital signals through analog-to-digital conversion. These signals, representing magnetic field strength along the X, Y, and Z axes, are outputted via I2C or SPI communication. With calibration and processing, the module provides accurate measurements for various applications like compasses and navigation systems.

Specifications:

  1. Operating Voltage: 3 -5 V DC.
  2. Standard current supply is 100 mA.
  3. Driver Chip IC we used HMC5883L.
  4. Measuring range: ± 1.3-8 Gauss.
  5. 3-axis magnetic electronic compass.
  6. Operating Temperature: -40°C to +85°C.
  7. Output Data Rate is up to 160Hz.
  8. Barometer: 300hPa to 1110hPa.

Requirements

S. No. Component Name Values
1 HMC5883L (x, y, z axis magnetometers sensor)
2 Resistors 4.7k(4)
3 Capacitors 10u, 0.1u(2), 224, 475
4 Male connectors 5
5 662K (Transistor)

Pin Configuration:

S. No. Pins Pin Description
1 VCC Input voltage 3-5v
2 GND Ground
3 SCL Serial Clock
4 SDA Serial Data
5 DRDY Data Ready, Interrupt Pin

Applications:

  1. Utilized for navigation purposes in vehicles, ships, aircraft, and smartphones.
  2. Orientation Tracking such as tilt-compensated compasses, allowing accurate tracking.
  3. Robotics systems for navigation, mapping, and localization tasks.
  4. Weather Monitoring system etc.