The HMC5883L is a triple-axis magnetometer compass, which uses I2C protocol for communication. This 3-axis compass module consists of an on-board voltage regulator allowing you to power the module with voltages between 3.3V and 6V.
HMC5883L Magnetometer Module Features & Specifications:
Operating Voltage: 3V to 6V DC
I2C interface
1-2 degree heading accuracy
Integrated 12-bit ADC
160Hz max data rate
Range of -8 to +8 Gauss
Needs no external components
Easy to use with Microcontrollers or even with normal Digital/Analog IC
