Universal remotes are a handy tool to have around if you have many devices that would all otherwise have their own remote controls. Merging them all into a single device leads to less clutter and less frustration, but they are often not truly “universal” as some of them may not support every infrared device that […]
IR TRANSLATOR MAKES TRULY UNIVERSAL REMOTE Continue Reading
Measuring air quality at any particular location isn’t too complicated. Just a sensor or two and a small microcontroller is generally all that’s needed. Predicting the upcoming air quality is a little more complicated, though, since so many factors determine how safe it will be to breathe the air outside. Luckily, though, we don’t need
WEATHER STATION PREDICTS AIR QUALITY Continue Reading
[Electronoobs] built a coil gun and the obvious question is: how fast is the projectile? To answer it, he built a chronograph suitable for timing a bullet. The principle is straightforward. A laser and a light sensor would mark the entry and exit of the projectile over a known distance. As it turns out, there are some
AS FAST AS A SPEEDING BULLET Continue Reading
A team of students from the German Saarland University in Saarbrücken, has created a unique handheld printer using an Arduino Mega 2560 called the Print-A-Sketch. The small handheld printer is capable of printing conductive ink images and will automatically correct any user errors during the print process, as well as providing a wide-ranging drawing tools to create any designs you
Print-A-Sketch DIY handheld conductive ink printer Continue Reading
We feel bad when we see a retrocomputer project and think, “Hey! That’s not that old.” But, usually, when we think about it, it really is. Take the Penkesu. It looks like one of the little organizer computers that were popular — ok — a long time ago. Inside is a Raspberry Pi Zero 2W, a
A HOMBREW RETRO LAPTOP Continue Reading
Back in the old days, we didn’t have fancy digital clocks. No, we had good analog clocks with a big hand and a little hand, and if you wanted to know the time you had to look at the clock and figure out which number each hand was pointing at, or kind of pointing at.
UNIQUE CLOCK IS ALL HANDS, NO DIAL, AND DOES THE WORM Continue Reading
USB 3.2 is a standard for compatible ports and connectors, which defines how a connection between them would work. The USB Implementers Forum (USB-IF) announced this specification back in 2017. The second upgrade of the third major iteration (originally known as USB 3.0) in the Universal Serial Bus (USB) family. This standard brings a significant
What Is USB 3.2? How Fast Can It Transfer Data? Continue Reading
For all its ability to advance modern society in basically every appreciable way, science still has yet to explain some seemingly basic concepts. One thing that still has a few holes in our understanding is the method by which a bicycle works. Surely, we know enough to build functional bicycles, but like gravity’s inclusion into
PROTOTYPE ROBOT FOR OMNIWHEEL BICYCLE Continue Reading
Arduino enthusiasts or those trying to teach others simple electronics may be interested to know that the Oplà IoT Kit is now available in more languages with Italian, Spanish, German and French translations added to the online store. The Arduino Oplà IoT Kit is available to purchase priced at $114 and provides an open programmable Internet of Things platform
Arduino Oplà IoT Kit now available in more languages Continue Reading
Some of the most popular vintage computers are now more than forty years old, and their memory just ain’t how it used to be. Identifying bad memory chips can quickly become a chore, so [Jan Beta] spent some time putting together a cheap DRAM tester out of spare parts. This little tester can be used with 4164
SIMPLE DRAM TESTER BUILT WITH SPARE PARTS Continue Reading
