I added output as you said, and I already have a potmeter connected to C12. I will try the code later
Thanks for the help!!
byte S0 = 16;
byte S1 = 6;
byte S2 = 7;
byte S3 = 8;
byte signal = 0;
void setup() {
digitalWrite(S0,LOW);
digitalWrite(S1,LOW);
digitalWrite(S2,HIGH);
digitalWrite(S3,HIGH);
pinMode(S0, OUTPUT); // sets the digital pin as output
pinMode(S1, OUTPUT); // sets the digital pin as output
pinMode(S2, OUTPUT); // sets the digital pin as output
pinMode(S3, OUTPUT); // sets the digital pin as output
Serial.begin(19200);
}
////////////////////////////////////////////////////////////
void loop()
{
Serial.print(millis());
Serial.print("\t");
Serial.println(analogRead(signal));
delay(3000);
}