7400 competition entry: TTL Tilt Sensor

Posted on Tuesday, October 18th, 2011 in 7400 contest by DP

Chris added another entry to the Open 7400 Logic competitionTTL Tilt Sensor.

His device works by converting accelerometer analog outputs into digital signals via 3×4 comparators, 6 are used for the X-axis and 6 for the Y-axis. From then on discrete logic chips are used to convert the different signals into various positions on a 8×8 dot matrix LED display. Since the dot matrix display only allows for one row of LEDs to be on at one time, he used a demultiplexer that cycles trough the rows in succession while maintaining persistence of vision for the user.

He made his schematic available, as well as lots of information and theory about its function. Check out the video of the device in action below.

Via the contact form.

This entry was posted on Tuesday, October 18th, 2011 at 12:00 pm 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.

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