[Daniel Dakhno] kept ending up in a situation where the ability to read the status of, or control a few digital IO pins with minimal effort, would be terribly useful. Not wanting to keep compiling code, for such simple needs, they instead used a nRF51-based module as a physical interface and produced a general purpose […]
A SIMPLE WEB CONFIGURED BLE TO GPIO BRIDGE Continue Reading
There are certain design aesthetics from every era that manage to survive the fads of their time and live throughout history. Ancient Greek architecture is still drawn upon for design inspiration in modern buildings, the mid-century modern style from the 60s still inspires various designs of consumer goods, and the rounded, clean looking cars from
CUSTOM CALCULATOR BRINGS US BACK TO THE 70S Continue Reading
Over the years [Integza] has blown up or melted many types of jet engine, including the humble pulsejet. Earlier improvements revolved around pumping in more fuel, or forced air intakes, but now it’s time for a bit more refinement of the idea, and he takes a sidestep towards the more controllable detonation engine. His latest experiment (video,
A DETONATION ENGINE PROTOTYPED USING RESIN PRINTING Continue Reading
Drone racing is nifty as heck, and a need all races share is a way to track lap times. One way to do it is to use transponders attached to each racer, and use a receiver unit of some kind to clock them as they pass by. People have rolled their own transponder designs with
HOW TO TIME DRONE RACES WITHOUT TRANSPONDERS Continue Reading
For those who choose to let their cats live a more or less free-range life, there are usually two choices. One, you can adopt the role of servant and run for the door whenever the cat wants to get back inside from their latest bird-murdering jaunt. Or two, install a cat door and let them
MACHINE LEARNING GIVES CATS ONE MORE WAY TO CONTROL THEIR HUMANS Continue Reading
As various antique computers age, it becomes increasingly hard to operate them as hardware begins to physically fail. Keeping these systems up and running often requires scavenging parts from other machines which are only becoming harder to find as time goes on. But if you throw out the requirement of using only era-appropriate components, there
MACINTOSH CLASSIC II WITH E-INK DISPLAY Continue Reading
Welcome to our pick of the best laptops for programming in 2022. If you’re a coder looking for a new device that lets you work pretty much anywhere, then the laptops on this page can help. Buying a great laptop to program on is more important than ever, as many of us are working from
The best laptops for programming in 2022 Continue Reading
One of the Star Trek movies has a McGuffin called “transparent aluminum.” While magic mirrors aren’t really transparent, it appears that way to a casual observer. If you haven’t seen one of these, they are polished metal mirrors with a pattern embossed on the back. When you shine a point source of light on the mirror, however,
MAGIC MIRROR ISN’T TRANSPARENT METAL Continue Reading
While almost everyone has a heater of some sort in their home, it’s fairly unlikely that the heat provided by a central heating system such as a furnace is distributed in an efficient way. There’s little reason to heat bedrooms during the day, or a kitchen during the night, but heating systems tend to heat
ARDUINO REDUCES HEATING COSTS Continue Reading
Pantographs were once used as simple mechanical devices for a range of tasks, including duplicating simple line drawings. [Tim] decided to make a modern electronic version that spits out G-Code instead. The design relies on a 3D-printed pantograph assembly, mounted upon a board as a base. A pair of Hall effect sensors are mounted in the
TRACING IN 2D AND 3D WITH HALL EFFECT SENSORS Continue Reading
