Poten_EG.ino

float pos;                      // Actuator Position
float conNum = 0.00441;         // Constant to convert ADC to Inches
                                // Equal to (951 (ADC at 4") - 44 (ADC at 0")/4")^-1
void setup() {
  pinMode(A1, INPUT);         // Configure Analog In pin 1 as an Input
  pinMode(10, OUTPUT);        // Configure pin 10 as an Output
  pinMode(11, OUTPUT);        // Configure pin 11 as an Output
  pinMode(2, INPUT_PULLUP);   // Input for Button
  pinMode(3, INPUT_PULLUP);   // Input for Button

  Serial.begin(9600);
}

void loop() {
  if(digitalRead(2) == HIGH & digitalRead(3) == LOW){
   // Retract Actuator
    analogWrite(10, 0);
    analogWrite(11, 255);
    pos = readPotentiometer(); // Print position value to the Serial Display
    Serial.println(pos);
    delay(1);
  }
  else if(digitalRead(2) == LOW & digitalRead(3) == HIGH){
    // Extend Actuator
    analogWrite(10, 255);
    analogWrite(11, 0);
    pos = readPotentiometer();
    Serial.println(pos);  // Print position value to the Serial Display
    delay(1);
  }
  else{
    // Stop Actuator
    analogWrite(10, 0);
    analogWrite(11, 0);
  }
}

/*Function to Read Potentiometer and Convert it to Inches*/
float readPotentiometer(void){
  float pos;
  pos = conNum*(analogRead(A1) - 44); // 44 ADC is equal to 0"
  return pos;
}