Metal Detector
In this article I discuss making a metal detector. A metal detector is very simple to make. In fact...
 

Capacitance sensor - switch
Capacitance sensor working example to demonstrate technologies used in touch pad...
 

Negative Resistance
This article demonstrates via an experiment negative resistance using a step up voltage divider!
 

Foam Cutter
A working foam cutter that uses 5 volts and has variable temperature control.
 

Cat eye reflector
Here are steps to make a cat eye reflector. This article demonstrates the science behind such reflectors.
 

110 year old glowing bulb
An experiment I did that shows one of the reasons for this bulb's long life span!
 

Computer shape recognition
Ever wondered how a computer can tell a triangle, or a rectangle? This article shows a working example with explanation!
 



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