homemade components

How-To: Ball-in-Cage Switch

How-To: Ball-in-Cage Switch

A ball-in-cage switch is a mechanical alarm switch that works on an ingenious principle. It has a single relatively unstable “open” position, in which a metal ball rests in a small divot in an insulating base, inside a cage made from two U-shaped metal staples that overlap one another without contacting. The ball is too […]

How-To:  Homemade Memristor

How-To: Homemade Memristor

Fascinating video from Nyle Steiner, who reports on his experiments with simple homemade memristors made from what are, probably, Al-CuS-Cu and Al-PbS-Pb junctions. He describes the observations that led him to experiment with these systems and the results of his experiments, and then wraps up by drawing out a simple memristor demonstration circuit and demonstrating its operation on-camera.