Watee level indicator... indicatore livello d acqua

205

02:42:14

L'interruttore indica i due puntali...mettere i puntali nell' acqua o in qualsiasi liquido che abbia un minimo di conducibilità elettrica. (The switch indicates the two leads...put the leads in the water or any liquid that has a minimum electrical conducivity.)

published 12 years ago

SBF17

12 years ago

It's wonderful

johnr

11 years ago

Reduce the current drawn with 1k resistor in base and 100 ohms at led anode. Simple circuit. Nice

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