This simple 4093-based audio peak detector from December 2004 monitors music and turns on a small light when the sound gets ...

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 ...

The heart of this diy metal detector circuit is the CS209A IC. The metal detector is built with one 100µH coil that has 40 mm in diameter and is made of 50 turns/0.4 mm wire. CS209A has one oscillator ...

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 ...

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 ...

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 ...

Using just $70 George Gleixner has created a do-it-yourself battery-powered synthesiser that has been created using a circuit bent children’s Hing Hon EK-001 squarewave keyboard. Circuit bending is ...

Home inspectors are seeing a surge of improvised electrical fixes, and they are not impressed. When you run new cable for a basement office or swap in a modern light fixture without permits, the work ...