TIMER is a stopwatch that was coded in Processing, a programming language based on Java. It fills a 60x60 pixel grid with one different pixel every second.
Therefore, the square is completely filled precisely after one hour has passed. The grid then fills with a new colour for the next hour and so on.

Please contact me, if you are interested in the code.
Mentoring: Prof. Ralph Ammer.
TIMER
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TIMER

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