DIY Parking Sonsor using Arduino

This DIY Parking Sonsor using Arduino, ultrasonic range finder and some of components
Mike writes :

The last time I was home visiting my parents I noticed bumper imprints caused by my mother suburban on the stairs leading up from the garage. Their garage it turns out is just barely long enough to fit their gigantic vehicles. So I decided it would be nice to have some visual cue for parking. Out came the arduino and a sonar range finder from Radio Shack.

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DIY Parking Sonsor using Arduino