Wire.h is a standard core library included with the Arduino IDE. If you have installed the Arduino software on your computer, the Wire.h library is already present in your system. It is required for Inter-Integrated Circuit (I²C) communication.
#include void setup() Wire.begin(); // Join the I2C bus as a master device Serial.begin(9600); void loop() // Your I2C communication code goes here Use code with caution. wire.h download
#include <Wire.h>
Here’s what most tutorials don’t tell you: wire.h download