Title Short description Rate Download
10 minute timer 10 minute timer with NE555. 2.84 4,891
Darkroom timer for PCB exposure Excellent darkroom timer for PCB exposure based on ATtiny2313 and 7-seg. LED displays. 2.92 4,500
Delayed switch A simple delayed switch. 2.83 3,365
Digital stopwatch Digital stopwatch. 2.88 3,663
Digital timer ON-OFF or OFF-ON timer with time period choice. 2.88 7,433
Fast turned-on/delayed-off relay Fast switch with delayed off. 2.78 2,940
Long delay generator Uses binary counter and low frequency osc., it can make a few hours delay. 2.85 965
Programmable time switch Programmable time switch. 2.80 5,576
Three timers Three timer circuits. 2.95 6,924
Time switch Time switch. 2.87 6,763


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