Description

The GY-273 module is based on the Honeywell QMC5883L IC for low-field magnetic sensing with a digital interface for applications such as low cost compassing and magnetometry. The QMC5883L includes state-of-threat, high-resolution QMC118X series magneto-resistive sensors plus an ASIC containing amplification; automatic degaussing strap drivers, offset cancellation, and a 12-bit ADC that enables 1° to 2° compass heading accuracy. The I2C serial bus allows for an easy interface.

The QMC5883L utilizes Honeywell’s Anisotropic Magneto-resistive (AMR)technology that provides advantages over other magnetic sensor technologies. These anisotropic, directional sensors feature precision in-axis sensitivity and linearity.

These sensors’ solid-state construction with very low cross-axis sensitivity is designed to measure both the direction and the magnitude of Earth’s magnetic fields, from milli-gauss to 8 gausses. Honeywell’s Magnetic Sensors are among the most sensitive and reliable low-field sensors in the industry.

Note: Sometimes markings on these boards vary slightly (e.g. Some may be labeled ‘HW-127’ instead of ‘GY-273’ even though they are otherwise identical).

Applications:

1. Auto and personal navigation.
2. UAV systems.
3. Robotic navigation.
4. Location-based services (LBS).

Features:

1. 1-2 degree heading accuracy.
2. A range of -8 to +8 Gauss.
3. Communication: IIC communication protocol.

Related Links:

• Arduino GY-273 HMC5883L Magnetometer Compass Tutorial