#include<Wire.h>    


int readA0 = 0;
int readA1 = 1;
int readA2 = 2;
int readA3 = 3;

void setup() {
  Serial.begin(9600);
  Wire.begin();     

}
byte x = 0;
void loop() {
  readA0 = map(analogRead(A0),0,1023,0,127);
  readA1 = map(analogRead(A1),0,1023,0,127);
  readA2 = map(analogRead(A2),0,1023,0,127);
  readA3 = map(analogRead(A3),0,1023,0,127);
  printValues();


  Wire.beginTransmission(8); 
     
  Wire.write(readA0);    
    
  Wire.write(readA1);   
     
  Wire.write(readA2);   

  Wire.write(readA3);           
  
  Wire.endTransmission(); 


  delay(500);


}


void printValues(){



  //print values on monitor
  Serial.print("  A0: ");
  Serial.print(readA0);
  Serial.print("  A1: ");
  Serial.print(readA1);
  Serial.print("  A2: ");
  Serial.print(readA2);
  Serial.print("  A3: ");
  Serial.print(readA3);
  Serial.println();

}