This is Honeywell’s HMC5883L, a 3-axis digital magnetometer designed for low-field magnetic sensing. The sensor has a full-scale range of ±8 Guass and a resolution of up to 5 milli-Gauss.
Supplied voltage should be between 2.16 and 3.6VDC.
SPECIFICATIONS
- Simple I2C interface
- 2.16-3.6VDC supply range
- Low current draw
- 5 milli-gauss resolution
Dimensions: 3.0 x 3.0 x 0.9mm
Documents:
- Datasheet (HMC5883L)
- Example ATMega328 C Code (zip)
- Digital Compass How-To Video
- Bildr Tutorial