A Breadboard Power Supply That’s More Universal Than Most

A favorite project of ours is the humble breadboard power supply. Yes, you can still prototype on breadboards, no, you don’t need an entire bench power supply to prototype on one, and every b… Source : A Breadboard Power Supply That’s More Universal Than Most

Rudimentary ultrasound machine made with Arduino Due

Ultrasound images are an important tool for medical diagnosis, and while units used by doctors can be very expensive, getting a basic image doesn’t have to be. Inspired by this attempt at a $500 ultrasound machine seen here, maker “stoppi71” decided to create his own…

Low cost, reactive ZigBee jamming #ZigBee #IoT #InternetOfThings

Via Bastian Bloessl, details of a $40 ZigBee protocol RF jammer. I just reviewed a paper that claimed that reactive jamming of ZigBee would only be possible with sophisticated devices that cost ove… Source : Low cost, reactive ZigBee jamming #ZigBee #IoT #InternetOfThings

The Three Faces Of The 555

In these days of cheap microcontrollers, it is hard to remember there was a time when timing things took real circuitry. Even today, for some applications it is hard to beat the ubiquitous 555 time… Source : The Three Faces Of The 555

A New Digital Mode For Radio Amateurs

There used to be a time when amateur radio was a fairly static pursuit. There was a lot of fascination to be had with building radios, but what you did with them remained constant year on year. Mor… Source : A New Digital Mode For Radio…

Bring your own robo-dog to life with Arduino!

Would you like a dog? Would you like a robot dog? If so, then this build by Michael Rigsby could be a great starting point.  Rigbsy’s robotic pet features four servo-driven legs, with two-axis shoulder movement, as well as an articulated knee joint. As seen…

Meet Tympan, The Open Hardware Hearing Aid

If you’re the kind of person who’s serious about using open source software and hardware, relying on a medical device like a pacemaker or an insulin pump can be a particular insult. You… Source : Meet Tympan, The Open Hardware Hearing Aid

Spot This DIY Electronic Load’s Gracefully Hidden Hacks

Sometimes it’s necessary to make do with whatever parts one has on hand, but the results of squashing a square peg into a round hole are not always as elegant as [Juan Gg]’s programmabl… Source : Spot This DIY Electronic Load’s Gracefully Hidden Hacks