Defrost Detector

About: Dad, Maker, biker, trekker, I like sciences, technology, martial art and wild.

When your freezer derails, it may take a while to notice it. Sometimes too. To avoid food intoxitations, here's a tip. Hack your freezer!

Step 1: Components and Tools Needed:


- cutter


- 2 plastics bottles

- food coloring

- water

Step 2: Construction

If you have two identical bottles, cut into 2 parts.

Otherwise, cut the top of the bottle and the neck. You now have a stand for your bottle.

Step 3:

Put a few centimeters of water in the bottle, and a few drops of food coloring.

Put the bottle in the freezer. When the bottle is frozen, return it.

Step 4: Finish

If the water is in the back of the bottle, you have a problem !



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    3 years ago

    What does this actually detect?