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Print Physical Buttons for Your Touch Screen | Hackaday
Modern handheld gaming hardware is great. Their primary method of interaction is the index finger or thumbs, not a D-pad and buttons. Shoulder triggers have only existed on a few phones. Bluetooth gaming pads are affordable but they are either bulky or you have to find another way to hold your phone. Detachable shoulder buttons are a perfect compromise since they can fit in a coin purse and they’re cheap because you can make your own.
hackaday  buttons  3dprinting  gaming  mobile  touch  accessibility 
3 days ago by cyberchucktx
Calm Down: It’s Only Assembly Language | Hackaday
n fact, the post is really well suited for the typical hacker because it focuses the on real mode of an x86 processor after it boots. What makes this tutorial a little more interesting than the usual lecture is that it has interactive areas, where a VM runs your code in the browser after assembling with NASM.

We really like that format of reading a bit and then playing with some code right in the browser. There is something surreal about watching a virtual PC booting up inside your browser. Yeah, we’ve seen it before, but it still makes our eyebrows shoot up a little.
assembler  hackaday  tutorial  language  hardware 
3 days ago by cyberchucktx
Automatic Pneumatic Harmonica | Hackaday
A wise man once said “If all you’ve got is a cute desktop compressor and some solenoid valves, everything looks like a robotic harmonica.” Or maybe we’re paraphrasing. Regardless, [Fabien-Chouteau] built a pneumatic, automatic harmonica music machine.
hackaday  music  pneumatic  harmonica  instrument 
3 days ago by cyberchucktx
Teardown: Box of Pain (Gom Jabbar) | Hackaday
The “Breo iPalm520 Acupressure Hand Massager”: You’re supposed to stick your hand into it, and through unknown machinations it performs some kind of pressure massage complete with heating action.
hackaday  pneumatics  air  massage  medical 
3 days ago by cyberchucktx
Lawn From Hell Saved by Mower From Heaven | Hackaday
After 30 years of trudging up and down the hill, his body was telling him to find a better way. But no lawn service would touch it, so he waited for divine inspiration.

And lo, the answer came to [sonofdodie] in a trio of string trimmers. These Whirling Dervishes of grass grazing are mounted on a wheeled plywood base so that their strings overlap slightly for full coverage. Now he can sit in the shade and sip lemonade as he mows via rope and extension cord using a mower that cost about $100 to build.
hackaday  lawn  homeautomation  mower  robotics 
4 days ago by cyberchucktx
Computer Vision For PCB Layout | Hackaday
One of the big problems with doing PCB layout is finding a suitable footprint for the components you want to use. Most tools have some library although — of course — some are better than others. You can often get by with using some generic footprint, too. That’s not handy for schematic layout, though, because you’ll have to remember what pin goes where. What really caught our eye though was a relatively new service they have that uses computer vision and OCR to generate schematic symbols directly from a data sheet. You can see it work in the video below.
hackaday  pcb  layout  hardware  vision 
5 days ago by cyberchucktx
Searchable KiCad Component Database Makes Finding Parts A Breeze | Hackaday
KiCad, the open source EDA software, is popular with Hackaday readers and the hardware community as a whole. But it is not immune from the most common bane of EDA tools. Managing your library of symbols and footprints, and finding new ones for components you’re using in your latest design is rarely a pleasant experience. Swooping in to help alleviate your pain, [twitchyliquid64] has created KiCad Database (KCDB). a beautifully simple web-app for searching component footprints.
cad  kicad  opensource  hackaday  database  hardware 
5 days ago by cyberchucktx
Cheap Front Panels with Dibond Aluminium
[oaox] has demonstrated a cost effective way to create metal front panels for your devices using a print service that offers Dibond aluminum. Consisting of two thin layers of aluminum with a solid polyethylene core, this composite material was designed specifically for signage. Through various online services, you can have whatever you wish printed on a sheet of pre-cut Dibond without spending a lot of money.
diy  cases  panels  hackaday  enclosure 
6 days ago by cyberchucktx
Retrotechtacular: Voice Controlled Robot from 1961 | Hackaday
We like to think that all these new voice-controlled gadgets like our cell phones, Google Home, Amazon Echo, and all that is the pinnacle of new technology. Enabled by the latest deep learning algorithms, voice-controlled hardware was the stuff of science fiction back in the 1961s, right? Not really. Turns out in around 1960, Ideal sold Robot Commando, a kid’s toy robot that featured voice control. Well, sort of. If you look at the ad in the video below, you’ll see that a kid is causing the robot to move and fire missiles by issuing commands into a microphone. How did some toy company pull this off in 1961?
hackaday  robotics  toy 
8 days ago by cyberchucktx
Automatic Sunglasses For the Lazy Hacker | Hackaday
[Andreas] may have created the ultimate lazy hacker accessory: automatic sunglasses, or “Selfblending sunglasses” as he creatively titled his video. If you can’t tell from the name, these are glasses that you never have to take off. If the light is dim, they move away from your eyes. Going back outside to bright light? The glasses move to protect your eyes.

The glasses consist of a couple of micro servos which move tinted lenses toward or away from the user’s eyes. A side-mounted Arduino Uno reads a CdS cell light sensor and drives the servos. Why an Uno rather than a much more wearable Arduino Nano? It’s what [Andreas] had lying around.
hackaday  glasses  display  arduino  wearable  wearables 
9 days ago by cyberchucktx
Stars Looking A Bit Dim? Throw Some Math At Them. | Hackaday
As the cost of high-resolution images sensors gets lower, and the availability of small and cheap single board computers skyrockets, we are starting to see more astrophotography projects than ever before. When you can put a $5 Raspberry Pi Zero and a decent webcam outside in a box to take autonomous pictures of the sky all night, why not give it a shot? A programmer always in search of a challenge, [Benedikt Bitterli] decided to take a shot at using software to improve astrophotography images. He documented the entire process, failures and all, on his blog for anyone else who might be curious about what it really takes to create the incredible images of the night sky we see in textbooks.
hackaday  photography  raspberrypi  astrophotography  astronomy  embedded 
16 days ago by cyberchucktx
Components | rudRemote | Hackaday.io
Wouldn't it be swell to have one radio transmitter that could talk to any of your creations simply by adding a simple radio transceiver that costs as little as $3? That's what rudRemote is for. Using almost anything with potentiometers you can build the multi-model controller that you didn't even know you wanted.
hackaday  remotecontrol  quadcopter 
18 days ago by cyberchucktx
Distorted Text Says A Lot | Hackaday
Bright minds at the Columbia University in the City of New York have “perturbed” ordinary font characters so the average human eye won’t pick up the changes. Even ordinary OCR won’t miss a beat when it looks at a passage with a hidden message. After all, these “perturbed” glyphs are like a perfectly legible character viewed through a drop of water. When a camera is looking for these secret messages, those minor tweaks speak volumes.

The system is diabolically simple. Each character can be distorted according to an algorithm and a second variable. Changing that second variable is like twisting a distorted lens, or a water drop but the afterimage can be decoded and the variable extracted.
hackaday  encryption  privacy 
22 days ago by cyberchucktx
Ultrasonic Data Transmission With GNU Radio | Hackaday
There’s no reason GNU Radio can’t be used with other mediums, though, as [Chris] shows us with his ultrasound data transmission between two laptops. He’s transmitting audio from the speakers of one laptop at 23 kHz. It’s outside the range of human hearing, but surprisingly able to be picked up by a cheap desktop mic connected to another laptop.
hackaday  sdr  softwaredefinedradio  ultrasonic  sound 
22 days ago by cyberchucktx
Internet of Smells: Giving a Machine the Job of Sniffing Out Spoiled Food @ Hackaday
What I found was there was a pre-existing body of research in India on using volatile organic compound (VOC) sensors to identify spoiled milk (PDF). More generally, these sensors are used in commercial devices to detect spoilage and adulteration in a wide variety of food products (PDF). These devices are sometimes called an ‘electric nose’. [NOTE: ‘Electric nose’ isn’t a great name, neither is ‘field olfactometer’. Smelloscope is an objectively better term, so let’s go with that. ]
hackaday  sensor  food  smell 
23 days ago by cyberchucktx
Serial Connection Over Audio: Arduino Can Listen To UART | Hackaday
AudioSerial: a simple way of outputting raw serial data over the audio port of an Android phone.
hackaday  audio  wireless  sound  communications  protocol  android  serial  mobile 
23 days ago by cyberchucktx
Nope Glasses | Hackaday.io
Meeting running long? Parole officer in your face again? Girl Scout with no Thin Mints? Just Say Nope. This is a glasses mounted project. Two LCD shutters are mounted over the eyes. Between them is an APDS9960 gesture sensor, which communicates with an Arduino to darken the shutters when you move your hand downward. An upward gesture clears them again. Left flashes both between clear and dark, and right alternates each shutter.
hackaday  display  wearables 
24 days ago by cyberchucktx
Laser-Powered Flying Machine Weighs Milligrams | Hackaday
We’ve become used to seeing some beautiful hand-made creations at the smaller end of the flying machine scale, tiny aircraft both fixed and rotary wing. An aircraft that weighs a few grams is entirely possible to build, such have been the incredible advances in component availability.

But how much smaller can a working aircraft be made? Given a suitable team and budget, how about into the milligrams? [Dr. Sawyer Fuller] and his team at the University of Washington have made an ornithopter which may be the lightest aircraft yet made, using a piezoelectric drive to flap flexible wings. That in itself isn’t entirely new, but whereas previous efforts had relied on a tether wire supplying electricity, the latest creation flies autonomously with its power supplied by laser to an on-board miniature solar cell that protrudes above the craft on its wires.
hackaday  ornithopter  drone  aeronautics  flight 
24 days ago by cyberchucktx
Ultrasonic Tracking Beacons Rising | Hackaday
An ultrasonic beacon is an inaudible sound with encoded data that can be used by a listening device to receive information on just about anything. Beacons can be used, for example, inside a shop to highlight a particular promotion or on a museum for guided tours where the ultrasonic beacons can encode the location. Or they can be used to track people consumers. Imagine if Google find outs… oh, wait… they already did, some years ago. As with almost any technology, it can be used to ‘do no harm’ or to serve other purposes.
hackaday  audio  beacons  ibeacons  tracking  communications  privacy  ultrasonic 
29 days ago by cyberchucktx

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