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Mini Dotclock
by 4004An array of LEDs randomly changes patterns every 10 seconds or so. To read the time, simply count the number of dots per digit. The main pic shows the time, 22:11. Different colours are assigned to different digits, red-10hours, amber-hours, green-10minutes, blue-minutes. Using 3mm superbrights means the clock can be read daytime or night (though it'd be washed out in full sunlight).
Having a random pattern is a lot less distracting than having numeric digits staring at you...this would also be a great project for adding to the front or size panels of a PC mod
Sundials on the Internet - Five sundial projects for you to make
by phgod利用簡單的工具,便可自製日昝進行時間測量,十分有趣。
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(10 marks)