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Monday 23 March 2020

20 Second Handwashing Timer (for Covid-19) stripboard layout


quite a simple project, during the Covid-19 coronavirus outbreak, one of the pieces of advice we've been given is to wash our hands for 20 seconds. so here's a timer circuit to help you do that.

"sw" is a push-to-make momentary switch, once you press the button, the LED illuminates for about 25 seconds (I added a few seconds to the timer to allow time to put soap on your hands). then just wash your hands till the LED goes off.
pretty good way to make sure your kids are washing their hands for long enough.

Stay safe.
    before it was deployed to the bathroom

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18 comments:

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    hey PIL - how about a spring reverb tank layout

    ReplyDelete
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    1. DrStevenson27 March 2020 at 19:24

      because my "policy" is to build everything before I post it, it rules out certain things;
      in this case I couldn't do it cause I don't have any spring reverb tanks

      Delete
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    I think this circuit be great for battery power projects ON for 25sec (circuit) off save juice. nice one paul

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