Here’s the simple circuit of an ultra-sensitive knock sensor for microcontroller-based...
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Adaptable Sensors & Arduino
Arduino hardly needs an explanation! Arduino is an extremely flexible open source hardware platform...
Audio Signal Injector
Audio signal injector is a must to have little tool for troubleshooting audio circuits. Connecting...
DC Gear Motor Primer
This article explains how to play with the common geared dc motors widely used to drive small...
Morse Code Practice Oscillator
I have received numerous requests for a simple, cheap and entry-level ham radio world project and...
EL Wire Lamp Driver/Inverter
Aim of this article is to provide a simple circuit to drive EL (Electro Luminescent) components...
