Author Archives: Pedro Umbelino

AT to XT Keyboard Adapter

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If you got an old PC/XT stored somewhere in basement and want to use a newer keyboard, here’s a little project you might like. [Matt] built an AT2XT keyboard adapter on a prototype board using an AT to PS/2 keyboard cable. An AT2XT keyboard adapter basically allows users to attach AT keyboards to XT class computers, since the XT port is electronically incompatible with PC/AT keyboard types. For those retro computing fans with a lot of old PCs, this trick will be great to connect the XT machines to a KVM (keyboard/Video/Mouse) switch.

[Matt] found schematics for the project on …read more

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Hidden Bookshelf Door Shows Incredible Motion

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Who didn’t dream of a hidden door or secret passage in the house when they were kids? Some of us still do! [SPECTREcat] had already built a secret door in a fully functioning bookcase with a unique opening mechanism. The intriguing mechanism allows the doors to start by sliding slightly away form one another before hinging into the hidden space. Their operation was, however, was manual. The next step was to automate the secret door opening mechanism with electronics.

The project brain is an off-the-shelf Arduino Uno paired with a MultiMoto Arduino shield to drive 4 Progressive Automations PA-14 linear …read more

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Brain Controlled Tracked Robot

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[Imetomi] found himself salvaging a camera from a broken drone when he decided to use it in a new project, a tracked robot with a live video feed from the mounted camera.

… I had a cheap Chinese drone that was broken, but its camera seemed to be operating and when I took apart my drone I found a small WiFi chip with a video transmitter. I (decided) that I will use this little circuit for a project and I started to buy and salvage the parts.

Being a tracked robot, it can negotiate most types of terrain and climb …read more

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3D Printer with Tilted Bed

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[Oliver Tolar] and [Denis Herrmann], two students from the Zurich University of Applied Sciences (ZHAW), designed and produced a 3D printer prototype that has a movable printing bed that can tilt. By tilting, objects with critical overhangs can be printed without the additional support material. The printer has six axes, three axes control the print head as usual and three other axes control the printing bed, allowing a wider range of movements.

The students claim that besides saving on the support material this printer can actually save time while printing objects that need a lot of support since, we assume, …read more

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Drones, Swarms At War

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Using drones in areas of conflict is not something new. As commercial drones get easily affordable, we see it all the time in the news, some soldier using a Parrot drone to scout ahead, above trenches or around buildings. That’s a new reality that soldiers have to get used to. It changes the battlefield, especially traditional ground warfare. There is also research in drone swarms, performing tasks in team for some time now. Some of them are really impressive.

And then there’s the U.S. Military Perdix drones. William Roper of the Department of Defense illustrate what exactly their capabilities are: …read more

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Drones, Swarms At War

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Using drones in areas of conflict is not something new. As commercial drones get easily affordable, we see it all the time in the news, some soldier using a Parrot drone to scout ahead, above trenches or around buildings. That’s a new reality that soldiers have to get used to. It changes the battlefield, especially traditional ground warfare. There is also research in drone swarms, performing tasks in team for some time now. Some of them are really impressive.

And then there’s the U.S. Military Perdix drones. William Roper of the Department of Defense illustrate what exactly their capabilities are: …read more

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Socks by Bob

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No, this article is not about SOCKS4 or SOCKS5 or Proxies. It’s about real socks, the ones that go onto your feet. Meet [Bob Rutherford], 88 years old, who lives in Saskatoon, Canada. He and his gang ([Glynn Sully], 92 years old , [George Slater] 85 year old, and young [Barney Sullivan] 65 years old) have made 10,000 socks for shelters in the community and across the country. That’s almost 8 miles of socks. Last year alone “operation Socks by Bob” as he likes to call it, produced 2,000 socks.

So how did these 4 fellows manage to pull this …read more

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Super Mario Run(s) — Away With Your Money

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If you are an Android user and a big fan of Super Mario beware: there is no Android version! There has been no official news on the Android version yet, let alone a version of the game. There is, however, a version circulating outside of Google Play market that will steal your bank account.

Right now attackers are taking advantage of the game’s popularity and Android users despair to spread malware posing as an Android version of Super Mario Run as they did in the past for Pokemon GO. The trojan is called Android Marcher and has been around since …read more

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Recording Functioning Muscles to Rehab Spinal Cord Injury Patients

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[Diego Marino] and his colleagues at the Politecnico di Torino (Polytechnic University of Turin, Italy) designed a prototype that allows for patients with motor deficits, such as spinal cord injury (SCI), to do rehabilitation via Functional Electrical Stimulation. They devised a system that records and interprets muscle signals from the physiotherapist and then stimulates specific muscles, in the patient, via an electro-stimulator.

The acquisition system is based on a BITalino board that records the Surface Electromyography (sEMG) signal from the muscles of the physiotherapist, while they perform a specific exercise designed for the patient’s rehabilitation plan. The BITalino uses Bluetooth …read more

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IoT-ify All Things: LG Has Gone Overboard

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If you been following Hackaday lately, you’ve surely noticed an increased number of articles about IoT-ifying stuff. It’s a cool project to take something old (or new) and improve its connectivity, usually via WiFi, making it part of the Internet of Things. Several easy to use modules, in particular the ESP8266, are making a huge contribution to this trend. It’s satisfactory to see our homes with an ESP8266 in every light switch and outlet or to control our old stereo with our iPhone. It gives us a warm fuzzy feeling. And that’s completely fine for one’s personal projects.

But what …read more

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