555 Shower Buzzer

How do you get the kids out of the shower before they empty the hot water boiler? Well, you can try to educate  them (good luck),  punish them (“no shower one month”) or build a small 555  circuit to generate high frequency alarm 4-5 minutes after operating it by a toggle switch.

The alarm sounds well under the water and around the house so if you hear it too long you know the kid is testing your nerves again…

The kids hate it of course so after a while they start getting use to the time limit and promise to get out of the shower quickly if you let them do it “without the beep”.

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