adiwan (adiwan)'s status on Tuesday, 20-Sep-16 11:13:26 UTC
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@critialcloudkicker Mechanical or electronic? A mechanical solution would be an 8-hour "hourglass" that falls down on a scale and it triggers a bell when enough sand is on the scale. An electronic one could be made with a 555 timer IC, a counter, and a buzzer circuit that is triggered when the counter is on the equivalent count of 8 hours. There are plenty other or better solutions that I can't think of at the moment.
