A pace clock is a large format clock used to time intervals in athletic training, most commonly in swimming or track. Modern pace clocks are large format 4-digit LED displays, with either a grid or 7-segment layout. Swimming workouts are typically organized in advance of a swim practice and include a series of different strokes and drills at various speeds and of various distances. The clock runs from an Atmel ATmega32A microcontroller and a host of peripheral integrated circuits with a Bluetooth connection to an original Android smartphone application to configure swimming workouts, timing intervals, and real-time wireless control of the clock’s features.
Author:- Paul Swirhun & Shao-Yu Liang
Source:- Cornell University