#include <Wire.h>

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Test");
  Wire.begin();

  int count=0;
  for (uint8_t address = 0; address < 125; address++) {
    Wire.beginTransmission(address);
    if ( Wire.endTransmission() == 0 ) {
      count++;
      Serial.print("Device found at 0x");
      Serial.println(address,HEX);
    }
  }
  if (count==0) Serial.println("No device found");
}

void loop() {

}