DIY Contact Mic – Collin’s Lab

It's amazing what a little disk can do ... when it's layered with piezoelectric crystals. Piezo disks are impressively sensitive to vibration and can easily be adapted to work as a contact microphones. The trick is the preamp - a basic circuit used to match the piezo's signal to levels... Read more »

Collin’s Lab: Schematics Schematics are the functional diagram of electronic circuits. With so many designs available on the web, understanding how to read schematics can unlock a world of possibilities for the electronics maker. In fact, if you can read a schematic, you can build a circuit before even understanding how it... Read more »

Circuit Skills: Infrared Light Infrared light may be invisible to the human eye - but it's usefulness in the world of electronics is easy to see. IR emitters & detectors can be used in a variety of different ways - most of us use them for wireless communication everyday. Read more »

Collin’s Lab: Atari Punk Console A true classic for DIY synth makers & circuit benders, the Atari Punk Console can kick out some ear-catching square waves. It's easy to build and a lot of fun to play around with. It may be challenging to make traditional music with an APC, but hey - there's... Read more »

Collin’s Lab: Switches

Easily overlooked, but elemental to electronics hardware, the manually operated switch is the simplest of electromechanical devices -- and likely the most familiar. While the most basic switch is ... well, quite basic -- there's a crazy-huge variety of switch types & sizes available to the electronics maker nowadays. Those... Read more »