Ultrasonic Parking Sonar by 40106
Friday, October 5th, 2007Advertisements
Feautures:
* automatic switch on on rear gear
* led-bargraph display
* audible bleep on last led
* “good old” design style, no microcontrollers!
This was one of my first designs: it is an ultrasonic parking sonar.
Based on an ultrasonic amplifier from an article seen on a 1982 magazine, it was once installed on the rear bumper of my Volvo [...]
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