week 8- unusual switch

Concept:

I created this project because I often find myself unsure whether the fridge is fully closed. Sometimes, the door looks shut, but it’s actually slightly open. Other times, I forget if I closed it at all. To solve this, I designed a simple circuit using two pieces of foil as a switch. When the fridge door is completely closed, the foil pieces touch, completing the circuit and lighting up a bulb. If the door is open, the circuit breaks, and the bulb stays off. This way, I can quickly tell if the fridge is properly closed, preventing food from spoiling.

Code:

void setup() {
  pinMode(11, OUTPUT);
  pinMode(A2, INPUT);
}

void loop() {

  int switchPosition = digitalRead(A2);

  if (switchPosition == HIGH) {
    digitalWrite(11, HIGH);   // turn the LED on (HIGH is the voltage level)
  } else  {
    digitalWrite(11, LOW);    // turn the LED off by making the voltage LOW
  }
}

video: 

(I used my foot I promise)

video

Reflection and improvements:

Looking back at my project, I realize that while it works, it’s quite simple and could be improved. The basic foil switch effectively indicates whether the fridge is closed, but it doesn’t provide additional details, like how long the door has been open. I could have added more features, such as a timer that sounds an alarm if the fridge stays open too long or a small screen displaying a warning message. Adding these functions will make it more interactive.