Midterm Project – The Watch That Bends Time

So, I had the inital idea of making a wall clock that detects when a person is looking at it and if the person is, then the clock would function normally but as soon as he/she looks away it would go haywire and start moving around.

This proved to be difficult to implement as it is almost impossible to detect a person looking at the clock with simple sensors and without using some sort of computer vision. Therefore, I turned to the next best thing with the advice from our professor: A wristwatch which detected to tilt movement as you read the watch.

I used a servo coupled with a tilt sensor and some code to make it work.

 

Here is a video of it working:

Here’s the code I used:

#include <Servo.h> 
 
Servo myClockServo;
int pos = 0;
int lightSensor = A0;
int tiltPin=2;
int maxLight=0;
int reading;
int previous = LOW;
long time = 0;        
long debounce = 50;   
 

void setup() 
{ 
  pinMode(tiltPin,INPUT);
  digitalWrite(tiltPin,HIGH);
  myClockServo.attach(9);
  Serial.begin(9600);
} 

void loop() 
{ 
  boolean crazy=false;
  
    int switchstate;
    int inPin=tiltPin;
    reading = digitalRead(inPin);
    if (reading != previous) {
    
    time = millis();
  } 
    
    if ((millis() - time) > debounce) {
     switchstate = reading;
    if (switchstate == HIGH)
      crazy = false;
    else
      crazy = true;
  }
  previous = reading;

 
    int delayVal=10; 

    if(crazy){
      myClockServo.write(101);
      
      
      } else {
        
        myClockServo.write(180);
      delay(500);
      myClockServo.write(0);
      delay(500);
        }                          
    
  
}