Measuring tiny differences in high-voltage circuits usually requires specialized differential test probes, which are often expensive. Fortunately, it’s possible to build your own high-voltage probe ...

Occasionally a design requires capacitors that are much closer to being identical in value to one another than the usual ...

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 ...

Android: Last week, we discussed Circuit Playground for iOS, a comprehensive electronics reference manual. Android users can get in on the action with ElectroDroid, a collection of electronic ...

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 ...

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 ...

Here’s something for the inner romantics and DIY circuit board assemblers in all of us. Yes, I’m talking to you, my friend; soldering iron in one hand, PCB board in the other, pining to tell your ...