Toilet brush CW key

by OH6DC

Toilet cleaning requires the right tools to get the job done efficiently. This brush is twice as efficient as the ordinary ones because you can scrub the toilet bowl AND send Morse code at the same time.

When these copper wires touch water...

... this switching circuit goes on. It then keys a CW transmitter or an audio oscillator (whichever you have available in the toilet).

See how it works: