بابا این خطا مال چیه نه میشه ال سی را راه اندازی کرد نه این سنسور ها را

Arduino: 1.5.7 (Windows 7), Board: "Arduino Nano, ATmega328"

gy_271hmc5883.ino:15:22: fatal error: HMC5883L.h: No such file or directory
compilation terminated.

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.