int controlChange = 176; // Control-Change auf MIDI Kanal 1

int potiWert[16];
int controllerWert[16];
int controllerWertAlt[16];
int potiPrint = 0;
int i = 0;

int bit1 = 0;
int bit2 = 0;
int bit3 = 0;
int bit4 = 0;
void setup() {
 //Select-Pins 4051s
 pinMode(2, OUTPUT);
 pinMode(3, OUTPUT);
 pinMode(4, OUTPUT);
 pinMode(5, OUTPUT);
 Serial.begin(9600);
}

void loop() {
 for (i = 0; i <= 16; i++) {
 bit1 = bitRead(i,0);
 bit2 = bitRead(i,1);
 bit3 = bitRead(i,2);
bit4 = bitRead(i,3);
digitalWrite(2, bit1);
digitalWrite(3, bit2);
digitalWrite(4, bit3);
digitalWrite(5, bit4);
potisAbfragen(i,A0);

potiPrint = analogRead(A0);
Serial.print(potiPrint);
Serial.print(" ");
}
Serial.println(" ");
delay(2000);
}

void potisAbfragen(int zaehler, int analogPin) {
 potiWert[zaehler] = analogRead(A0);
 controllerWert[zaehler] = map(potiWert[zaehler],0,1023,0,127);
 
 if (controllerWert[zaehler] != controllerWertAlt[zaehler]) {
   //Serial.println(controllerWert[zaehler]);
  // Serial.println(potiWert[zaehler]);
 //sendeMIDI(176, (20+zaehler), controllerWert[zaehler]);
 controllerWertAlt[zaehler] = controllerWert[zaehler];
 }
 }

void sendeMIDI(int statusByte, int dataByte1, int dataByte2) {
 Serial.write(statusByte);
 Serial.write(dataByte1);
 Serial.write(dataByte2);
}