19,703

A MIDI Player on Eight Floppy Drives

Some times ago, I watched a video about singing floppy drives and a heap of written off computers, and decided to make something of the kind. Make it on Arduino like the rest? Seriously? As they say, f*ck the system! I decided to make it on Atmega8A, as that’s what I had at hand. I also decided that wires were unnecessary, and found HC-05. Let’s go! The Circuit As usual, the first stage is the circuit.
785,744

USB Killer

It was a usual gloomy winter morning. My colleagues and I were drinking our morning coffee, sharing the news and there were no signs of trouble. But then a friend told about… (a quote from a chat in Skype): I read an article about how a dude in the subway fished out a USB flash drive from the outer pocket of some guy’s bag. The USB drive had “128” written on it.
32,405

DIY. An Astro Tracker in Two Nights

After reading an article about amateur astronomy, I decided to take pictures of stars with the help of a common camera using no telescope. In the mentioned article I learnt about Astro Trackers. An Astro Tracker is a device that is used to compensate rotation of the sky of stars in long-exposures. Googling for a while, I found out that it’s no problem to buy them, but the price was a bit high.
13,672

Yogurt making machine powered by Arduino

Everyone knows that yogurt is a very better-for-you product, plus it’s delicious. There is a short story under the cut about how I decided to create a yogurt maker, some pictures and a sketch. Wandering in the vast expanses of the Internet I came across such an interesting thing as a yogurt maker. My wife likes yogurt and fairly often buys it. Having read the specialized website, I was inspired. I was inspired by the very thought of easily making yogurt at home, plus it will be more health-giving than the store-brought one.
12,663

At Stanford University a paper microscope has been developed that costs less than a dollar

The main motive for the creation of the microscope was the struggle against malaria — in the developing countries about a billion microscopic examinations of the blood samples per year have to be carried out for malaria diagnosis. A standard laboratory microscope is an expensive and fragile device. Stanford scientists have managed to construct a microscope with magnification up to the 2000x, while the cost of all the components in a mass production will be 97 cents.