Day: February 19, 2008

Schickard machine

Schickard machine

From the MAKE Flickr pool Member csf0137 has graced the pool with a collection of impressive wooden machine replicas. The one seen above is a recreation of Wilhelm Schickard’s calculating machine from the early 1600’s. It’s often assumed that calculation devices were first invented by French mathematician Blaise Pascal – but Shickard’s machines predated Pascal’s […]

Alternative etchant

Alternative etchant

If you etch your own PCBs, you know what a pain ferric chloride can be – difficult to dispose of, doesn’t last very long, and it can be a hassle to acquire at times. Well consider Copper Chloride in Aqueous Hydrochloric Acid. It’s inexpensive, made from common chemicals, lasts a very long time, and has […]

DIY Guitar pedal effects

DIY Guitar pedal effects

If you can ignore all the slow loading ads, Musique.com has a lot of different effects pedal schematics and tutorials that can be downloaded for free. AMZ is a resource with information about guitar effects pedals, stompboxes, audio circuits and tips on how to build them. There are fuzzbox schematics, signal booster projects, audio mixers […]