Wire Library Arduino < COMPLETE >

void loop()

void loop() Wire.requestFrom(0x08, 1); if (Wire.available()) int received = Wire.read(); Serial.println(received);

For 90% of I2C projects, Wire is all you need. For advanced needs (multi-master, >32-byte transactions, non-blocking), consider platform-specific I2C libraries.

void loop() // Send register address to read (e.g., 0x00) Wire.beginTransmission(0x68); // MPU6050 address Wire.write(0x00); Wire.endTransmission(false); // Send restart

Slave (Arduino #1):

delay(100);

// Request 2 bytes from slave Wire.requestFrom(0x68, 2);