Gadget Freak Case #251: Billiards Ball Counter

February 21, 2014

I wanted to play a little pool with my brother, but to play call shot, you really need a set of counters to keep track of the number of each of your successes.

My facility has no resources to do this -- neither manual counters nor the familiar beadwork located somewhere above the table. Electronic people do it electronically, and this project is no exception.

The application is based on an 18-pin controller; dual two-digit, seven-segment displays, and four debounced buttons. The project used an inexpensive Microchip 16F627A; two dual, red, common cathode, seven-segment displays; and a surplus, gutted alarm clock to provide packaging and buttons. Shown in the photo, the finished project is powered by a wall-based supply with a simple 4.5V regulator installed on the application's board.

Do you have a Gadget Freak project you would like the world to see? Send a brief description of your gadget and a photo to Assistant Managing Editor Lauren Muskett.

Click here to view Table 1.

Click here to view Table 2.


The editors of Design News have handpicked your favorite Gadget Freak cases from over the years, bringing them together in a dynamic digital edition, complete with videos, which you can view here.

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