Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

Making PCBs at home is a great means to get your prototype up and running without having to wait weeks for a professionally made board. Regardless if these prototype boards are milled or etched, they ...

If you've built your fair share of custom PCs over the years, you've probably got more than a few circuit boards stashed away. Here's how to turn them into a cool coffee table. It's certainly not ...

A compact DIY instrument replaces numerous oscillators by generating accurate frequencies across a broad range, offering ...

[Jordan] likes the flexibility that conductive inks offer (dead link, try Internet Archive) when putting together electronic circuits, but says that they are often too expensive to purchase in decent ...

The 80% rule requires standard circuit breakers to be sized so continuous loads don't exceed 80% of their rating, ensuring ...

This diy digital thermometer circuit can measure temperatures up to 150°C with an accuracy of ±1°C. The temperature is read on a 1V full scale-deflection (FSD) moving-coil voltmeter or digital ...

Ever wanted to move Pac-Man using pencil drawings, make music with bananas or type an email with alphabet soup? Now you can thanks to Makey Makey, a simple circuit board that turns almost any object ...