digital-and-analog-input.ino

int led_pin = 8;
int switch_pin = 9;
int pot_pin_1 = A1;
int pot_pin_2 = A2;
int pot_pin_3 = A3;
int last_switch_state = LOW;

void setup() {
  pinMode(led_pin, OUTPUT);
  pinMode(pot_pin_1, INPUT);
  pinMode(pot_pin_2, INPUT);
  pinMode(pot_pin_3, INPUT);
  pinMode(switch_pin, INPUT);

  Serial.begin(9600);
}

void loop() {
  int pot_one_reading = analogRead(pot_pin_1);
  delay(1);
  int pot_two_reading = analogRead(pot_pin_2);
  delay(1);
  int pot_three_reading = analogRead(pot_pin_3);
  delay(1);
  int switch_reading = digitalRead(switch_pin);

  // Potentiomenter position mapped to 0-9 digits
  int pot_one_digit = map(pot_one_reading, 0, 1024, 0, 10);
  int pot_two_digit = map(pot_two_reading, 0, 1024, 0, 10);
  int pot_three_digit = map(pot_three_reading, 0, 1024, 0, 10);
  Serial.print("\t");
  Serial.print(pot_one_digit);
  Serial.print("\t");
  Serial.print(pot_two_digit);
  Serial.print("\t");
  Serial.println(pot_three_digit);

  // Evaluate when switch is pressed
  if (last_switch_state == LOW && switch_reading != last_switch_state) {
    if (pot_one_digit == 3 && pot_two_digit == 6 && pot_three_digit == 9) {
      digitalWrite(led_pin, HIGH);
    } else {
      digitalWrite(led_pin, LOW);
    }
  }
  last_switch_state = switch_reading;

  delay(100);
}