Miscellaneous sensor schematics

Build a simple lie detector circuit and unlock the secrets of truth with this 33K resistor based design. This easy-to-assemble project empowers you to measure skin resistance and reveal deception, inspiring you to build innovative solutions for truth detection.... [read more]

Build a powerful seismic detector using a kitchen gas lighter's piezo element. This simple circuit, with a 2-3 pound weight and 15V power supply, unlocks incredible sensing potential.... [read more]

Explore the sensitive world of FET circuits and unlock extraordinary detection capabilities with this simple schematic. Build this 1mA or 250uA circuit to measure static charge fluctuations and observe full scale deflection triggered by ionizers and television signals.... [read more]