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GY-271 triple-axis magnetic sensor module adopts high-performance QMC5883P chip, used for magnetic field detection and electronic compass heading calculation. It supports 3-5V wide voltage input and standard IIC interface, well compatible with Arduino, STM32 and Raspberry Pi. The module can directly replace HMC5883L with stable output, low noise and reliable directional accuracy. Suitable for intelligent vehicle navigation, robot attitude positioning, weather station auxiliary detection and various magnetic field induction DIY electronic projects.