Ginormous Stopwatch
Approx construction cost US$40
Ginormous Stopwatch Project -- EPE Online November 1999 The circuit presented here is a modernized version of a stopwatch designed and built by the author several years ago to time equestrian events where the start and stop gates were not readily visible to the timekeepers, necessitating some sort of remote triggering to get reasonable accuracy.

This design uses a single PIC16C55 to generate all the timing and liquid crystal display (LCD) functions. The radio-controlled gating transmitter and receiver sections are comprised of small commercial modules, complete with channel coding/decoding facilities.

Also included is a large display unit so that the audience can be a part of the action -- their hero has two fences to go and the clock is ticking, will he beat the current best time &.

More details on this construction project can be found in the November 1999 issue of EPE Online, the world's first web-delivered electronics and computing hobbyist magazine.

See also Part 2 of this project in the December 1999 issue, where we show you how to add giant digits to your display.

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