#include <Wire.h> void setup() { Wire.begin(); // Join the I2C bus as master Serial.begin(9600); Serial.println("I2C Scanner Ready"); }
Beginners who think they need to find a GitHub link or ZIP file to get I2C working. If you are new to Arduino, you might have seen code starting with #include <Wire.h> and assumed you need to hunt down a library, download a ZIP file, and install it manually. wire.h arduino library download
Demystifying Wire.h for Arduino: Why You Don’t Need to Download It (And How to Use It) #include <Wire