The GY-271 board is built around an Honeywell HMC5883L low-cost 3-axis compass and magnetometer chip. The HMC5883L provides a 2° measurement on the 3 axes of the earth's magnetic field through its I2C interface.
Features
Supply voltage: 5V (a 3.3V regulator powers the HMC5883L)
PCB size 13.9 x 18.5mm
Its 12-bit interface allows field measurements with a precision of 1 to 2°, transmitted over the I2C serial communication bus for easy interfacing.
The 3mm SMD component with 2x8 pins is already soldered, ready to use.
6 magnetic field measurement ranges,
Full scale -8 to +8 gauss,
10 milli-Gauss resolution.
Minimum measurement period 8.32ms (160Hz)
The module's 7-bits I2C address is 0x1E
Operating modes: continuous, single-measurement, idle mode, sleep mode, off.
The circuit diagram is given for guidance only
