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…

The Pocket Emulator That Will Fit In Your Pocket

If there’s one thing tiny Linux Systems on a Chip are good for, it’s emulation. There’s nothing like pulling out an emulation console on the bus for a quick game of old-school NES… Source : The Pocket Emulator That Will Fit In Your Pocket

Tiny laser pico projector available in Raspberry Pi HAT model

On Kickstarter: a tiny, laser-based “Nebra AnyBeam” pico projector with 720p resolution and up to 381cm screen sizes available in four versions: standalone, dev kit, Raspberry Pi HAT, and an RPi-Zero W based “Monster Ball.” Source : Tiny laser pico projector available in Raspberry Pi HAT…

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 Weather Station Fit For A PDP-11

The Digital Equipment Corp. PDP-11/70 is a masterpiece of Cold War-era industrial design. This microcomputer was the size of one or two modern server racks depending on configuration, and the front… Source : A Weather Station Fit For A PDP-11