This Compass Module made exclusively by Parallax is a dual-axis magnetic field sensor built around the Hitachi HM55B IC.

Parallax has made this compass IC accessible by providing Hitachi’s surface mount sensor chip with a 3 V onboard voltage regulator and resistor protection, all in a 0.3” wide 6-pin DIP module.

Features:

• Sensitive to microtesla (µT) variations in magnetic field strength.
• Simplifies direction by resolving magnetic field measurements into two components axes.
• 6-bit (64-direction) resolution after calibration
• Only 30 to 40 ms between start measurement and data-ready with simple synchronous serial interface.
• Built-in resistor protection for data pins eliminates bus conflict risks.
• Compact and breadboard-friendly 0.3 inch, 6-pin DIP package.