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7400 competition entry: TTL based range finder

Posted on Friday, October 21st, 2011 in 7400 contest by DP

Udif entered the TTL based range finder into the Open 7400 Logic Competition. It uses an ultrasonic sensor to determine the distance to an object.

The sensor outputs a pulse, the width of the pulse is proportionate to the distance measured. The sensor signal drives a clock which in return increments a counter. The clock is timed so that each tick of the counter responds to 1cm of distance, and the output is shown on a 7-segment display.

Via the forum.

This entry was posted on Friday, October 21st, 2011 at 9:00 am and is filed under 7400 contest. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “7400 competition entry: TTL based range finder”

  1. Dave says:

    Nice one. Good luck!

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