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 ...

Solarpunk is all about combining that DIY hacker ethos with sustainability and renewable resources. Our usual PCB ...

How were engineers charging Li-ion batteries before today's highly integrated charger modules? Back in 2007, we published a ...

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 ...

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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 ...

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 ...