Fresh hacks every day
Do you know how a modern hard drive works? If you don’t you should have a pretty good idea after watching this video. In only five minutes [Bill Hammack] manages to describe a hard drive in awesome detail without using any unnecessary scientific jargon.
The video teardown explains how the flying head “flies” how voice coil motors work and … Read the rest
Before I decided to build my own CNC machine I had seen a few bolt together machines on the internet, usually constructed using 80/20 aluminum extrusion. My write up describes my attempt at a completely DIY bolt together machine made from 25mm aluminum SHS, 50mm shelving brackets and lots and lots of gutter bolts.
Building the machine involved drilling and … Read the rest
There are times when you don’t need much processing power for your project but you do need a lot of I/O pins. It often doesn’t make economic sense to choose a larger microcontroller just to get extra pins so the answer is to use a port expander chip. [Raendra] posted a guide for using one of these chips, it’s … Read the rest
We’re not sure if this is the first time, but here’s some pretty solid proof that Arduino has found its way into the weapons of war. The creators, [Derek Wales], [John Eischer], and [George Hopkins] are all Electronics Engineering majors at West Point. They came up with this idea after seeing video footage of a firefight in Afghanistan where … Read the rest
[Mike Field] has always been interested in the Mandelbrot Set since he first read about it back in the ‘80s. Having coded it on a Commodore VIC20 back int he day, he always returned to the Mandelbrot set when he wanted to try out some new programming technology.
He wanted to delve deeper into the world of FPGAs, so [Mike] … Read the rest
A while back, [Windell] from Evil Mad Scientist Laboratories wrote up an article for Make Magazine detailing how he built a one-ton, servo-controlled scissor jack for under $100. He dropped us a line to let us know that the project details have been released for free at Make Projects, so we stopped by to take a look.
The project starts … Read the rest
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