GY-271 three-axis electronic compass, accelerometer data, and 51 microcontroller communication program. You can lcd1602 display, you can also serial communication. Explained in detail. Easy to learn.

STC51_HMC5883L-GY271\51单片机串口输出.txt
....................\GY-27-HMC5883 STC IIC测试程序.C
....................\STC-GY-27A接线图.pdf
....................\STC-GY-27接线图.pdf
STC51_HMC5883L-GY271

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