This circuit uses the principle of skin moisture volume
Telling a 'lie' will increase skin moisture volume allowing
to detect whether the test subject is "lying" or not. For
entertainment purposes only!
This kit is a light measurement circuit used for measuring the
intensity of light. The scale of the light level consists of 5 LEDs.
Trimmer Potentiometer is used for adjusting the sensitivity of
photo-transistor suitable for that place.