Final project: Fridge Guard

Sometimes when I take a lot of things out of the fridge, I have no free hand to close the door and then the door is just left open for a long time. Sometimes when I use too much strength to close the fridge door, it bounces off but I can’t notice it. When I realize it is still open, several hours or maybe the whole night has passed by. The food went bad and a large amount of electricity was wasted.

IMG_1291

The Fridge Guard is a close door reminder designed for people who do not notice the fridge door is still slightly open or may forget to close the fridge door. The reminder can stick on the door and one of the polar bear’s hand will stick on the frame of the door, detecting whether the door is being left open and no one notices it.

It uses the Force sensor, IFTTT and Adafruit IO to gather the information from your fridge and sends a reminder to you through the message and piezo buzzer.

IMG_9744

Here is the link of Instructables tutorial.

Here is the video:

The whole process to making Fridge Guard was challenging and also interesting and I really enjoyed that. At the very beginning, I used temperature sensor to detect whether the door is open or closed. After I built the circuit and test it at fridge, it didn’t change the temperature when the fridge door was slightly open. So I changed to force sensor, I also met some problem here. Because the sensor is too thin, when the door is closed, there is no pressure on the sensor. Finally I found that I need to make it thicker so that the sensor can detect the pressure when door is closed.

For the shape of Fridge Guard, I made the design and shape to fit the context. Polar bears live in cold area, so I chose this shape. I used to put them outside the fridge at the side of door, but it not quite fit well. So I chose to put it inside the fridge.

For the future, I think I want to change the material of Polar bear to soft rubber which is more fit for the environment inside the fridge.

Leave a comment

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s