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

Discover how to create a functional DIY solar panel using a compact disc, copper foil, aluminum foil, and LEDs in this engaging science experiment. Watch as we assemble the components, connect the ...

This is a diy simple stun gun circuit showned only for learning! In No Way Do I Recommend Building these Stun-Guns or the actual use of them for any purpose what so-ever. We will present more stun gun ...

One of the problems encountered thus far with 3D-printing circuits with conductive filament is that it doesn’t really bond to anything, let alone solder, so how does one use it? [mikey77] wrote an ...

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 ...