A typical digital compass has the following characteristics:

1. The three-axis magnetoresistance effect sensor measures the plane geomagnetic field and compensates for the biaxial tilt angle.

2. High-speed, high-precision A/D conversion.

3. Built-in temperature compensation minimizes temperature drift in tilt and pointing angles.

4. The built-in microprocessor calculates the angle between the sensor and the magnetic north.

5. It has simple and effective user calibration instructions.

6. Has a pointing zero correction function.

7. The outer casing structure is waterproof and non-magnetic. The principle of the electronic compass is to measure the earth's magnetic field. If there is a magnetic field other than the earth in the environment used and these magnetic fields cannot be effectively shielded, then the use of the electronic compass has a big problem. To determine the heading.