Intro To Wearable Computing Workshop

accelerometer_tilt.ino

int groundpin = 18;             // analog input pin 4
int powerpin = 19;              // analog input pin 5
int xpin = A3;                   // x-axis of the accelerometer
int ypin = A2;                   // y-axis
int zpin = A1;                   // z-axis (only on 3-axis models)
long xy_max = 470;
long xy_min = 550;

int forwardPin = 9;
int backPin = 10;
int leftPin = 11;
int rightPin = 12;
int centerPin = 8;

long x = 0;
long y = 0;

void setup()
{
  Serial.begin(9600);
  
  pinMode(forwardPin, OUTPUT);
  pinMode(backPin, OUTPUT);
  pinMode(leftPin, OUTPUT);
  pinMode(rightPin, OUTPUT);
  
  pinMode(groundpin, OUTPUT);
  pinMode(powerpin, OUTPUT);
  digitalWrite(groundpin, LOW); 
  digitalWrite(powerpin, HIGH);
}

void loop()
{

    
  x = analogRead(xpin);
  y = analogRead(ypin);
  digitalWrite(centerPin, LOW);
  


  if (y < xy_max) { //backwards
  
    digitalWrite(backPin, HIGH);

    Serial.println("The arduino is moving(tilted) backwards");
    
  } else if (y >= xy_max){
  
    digitalWrite(backPin, LOW);
    
  }
  
  
  if (y > xy_min) { //forwards

    digitalWrite(forwardPin, HIGH);

    Serial.println("The arduino is moving(tilted) forwards");

  } else if (y <= xy_min){
  
    digitalWrite(forwardPin, LOW);
  
  }
  
    if (x > xy_min) { //left

    digitalWrite(leftPin, HIGH);

    Serial.println("The arduino is moving(tilted) left");

  } else if (x <= xy_min){
    
   digitalWrite(leftPin, LOW); 
  
  }
  
   if (x < xy_max) { //right

    digitalWrite(rightPin, HIGH);

    Serial.println("The arduino is moving(tilted) right");
    
   }  else if (x >= xy_max){
     
     
    digitalWrite(rightPin, LOW);

  } 
  
  if (y >= xy_max && y <= xy_min && x <= xy_min && x >= xy_max)     { // nothing
    
    digitalWrite(forwardPin, LOW);
    digitalWrite(backPin, LOW);
    digitalWrite(centerPin, HIGH);
    digitalWrite(leftPin, LOW);
    digitalWrite(rightPin, LOW);
    Serial.println("The arduino is currently not moving(tilted) in any direction");
}
}