HW-127 Magnetic Compass Module GY-273

HW-127 Magnetic Compass Module GY-273

The HW-127 module is a 3-axis digital compass, based on the IC QMC5883L. This sensor, like the needle of a compass, aligns with the stronger magnetic field. Its inner workings of the sensor depend on resistors that are sensitive to magnetic fields, installed in such a way as to form an orthogonal coordinate system (x, y, z). Its I2C serial bus allows for easy interfacing.

Specifications:

• Supply voltage : 2.16 – 3.6 VDC,
• I2C interface with SCL, SDA,
• Measuring range : 1.3 to 8 Gauss,
• Measurement Resolution: 12 bits,
• Measuring accuracy : 0.73 – 4.35 Gauss,
• Transmission speed 400kHz,
• Sensitivity 230-1370 LSB/GS,
• Output Frequency: 75Hz,
• Discontinue the DRDY pin,
• IC QMC5883
• Dimensions 18 mm x 13 mm.

Example:

For the HW-127, use the https://github.com/keepworking/Mecha_QMC5883L library