This kit detects gravity? Well, not really - but what it does do is remain in an off state until a curious person lifts up the kit to study it. The "Gravity Detector" has a CDS cell underneath the board which activates when the board is lifted and give the "curiosity seeker" a mild shock from the "handle" attached to the board. A great practical joke item! Uses IC, SCR and FET circuitry. Operates on one 9V battery (not included). Size of PC board: 4" x 2". Complete with all parts, PC board and instructions. Skill Level 2. This kit requires soldering of components to the PC board while building.
Manufactured by Chaney Electronics