Wire.h - Library

void loop() Wire.beginTransmission(0x3C); // Start transmission to device address 0x3C Wire.write(0x00); // Send command byte Wire.write(0x01); // Send data byte Wire.endTransmission(); // Stop transmission

void requestEvent() Wire.write("Hello from slave"); wire.h library

if(error == 0) Serial.print("Found device at 0x"); if(address < 16) Serial.print("0"); Serial.println(address, HEX); devices++; void loop() Wire

Serial.print("Found "); Serial.print(devices); Serial.println(" devices"); delay(5000); void loop() Wire.beginTransmission(0x3C)