จาก Error ดังกล่าวเกิดจาก ยังไม่ได้ติดตั้ง Library ครับ Adafruit_I2CDevice.h ให้ติดตั้งเพิ่มด้วยครับ /Users/nantiwatsensai/Documents/Arduino/libraries/Adafruit_ADXL345-master/Adafruit_ADXL345_U.h:36:10: fatal error: Adafruit_I2CDevice.h: No such file or directory#include <Adafruit_I2CDevice.h>
Arduino: 1.8.19 (Mac OS X), Board: "Arduino Uno"
In file included from /Users/nantiwatsensai/Documents/Arduino/balancing_robot/balancing_robot.ino:4:0:
/Users/nantiwatsensai/Documents/Arduino/libraries/Adafruit_ADXL345-master/Adafruit_ADXL345_U.h:36:10: fatal error: Adafruit_I2CDevice.h: No such file or directory
#include <Adafruit_I2CDevice.h>
^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Multiple libraries were found for "PID_v1.h"
Used: /Users/nantiwatsensai/Documents/Arduino/libraries/Arduino-PID-Library-master
Not used: /Users/nantiwatsensai/Documents/Arduino/libraries/arduino-self-balancing-robot-master
exit status 1
Error compiling for board Arduino Uno.
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