Arduino Digital Compass Tutorial | HMC5883L Magnetometer Heading
Give your Arduino a sense of direction with a digital compass / magnetometer. This tutorial covers the HMC5883L (QMC5883L) module, reading magnetic field strength on X/Y/Z axes, computing heading in degrees, and compensating for tilt.
🧭 What you'll learn and more things to explore:
• How magnetometers measure magnetic field direction
• Wiring HMC5883L to Arduino via I2C
• Calculating heading/bearing in degrees from magnetic north
• Hard-iron calibration for accuracy
📌 Part of the Arduino Prototyping: Inputs series.
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