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When life gives you bananas!!!!! Just eat them.
Necessity is the mother of inventions, and I won’t deny that fact. Frankly speaking, this is the 2nd time I bumped into our garage wall since we moved into this new house. That’s it, there would be no third time.
In this video, I am going to use an ultrasonic sensor to calculate the car’s distance from the garage wall and display it using green, blue, yellow and red LEDs. The color of LEDs indicates whether to keep moving, slow down, stop or go back.
The total cost of the project is around $20 - $25.”

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