Hot glue guns are pretty simple beasts: there’s an on/off switch, a heating element, and a source of current, be it battery or wired. You turn it on, and the heater starts warming up; ...

We’ve seen a few H-bridge circuits around these parts before, and here’s another application. This time we have an Old Train ...

Making a servo tester using an Attiny85 micro chip, Attiny45 also works for this project. This diy servo tester is as good as any other servo tester, the difference is that it can be programmed to do ...

An implantable bioartificial kidney being developed by The Kidney Project – a nationwide collaboration led by Bangladeshi American Professor Shuvo Roy of U.C. San Francisco and Dr. William Fissell of ...