Non Contact Liquid soap dispenser


Just move hand in front of this Liquid soap dispenser. You get few drops of liquid soap for hand wash. Made it Non contact to prevent hand contamination from the press handle of the dispenser if it is used in common places.

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Five stage Water level Indicator – School Project 1


A Simple Water level indicator circuit indicating 5 stage water levels in the tank. LED1 glows when the water tank is empty. LED 5 glows when the tank is full. LED 2 indicated 40%, LED 3 indicates 60% and LED 4 indicates 80% water in the tank. LEDs glows one by one when the water tank fills and turns off one by one when the water level drops.

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