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Packing a Lot Into a Little PCB: Winners of the Square Inch Project | Hackaday
Things are getting smaller every day, too. We were so impressed with the minuscule entries from the first “Square Inch Project” — a contest challenging designers to use 1 inch2 of PCB or less — that we decided bring it back with the Return of the Square Inch Project. The rules really were simple: build something with a PCB that was a square inch.
hackaday  hardware  contest 
15 hours ago by cyberchucktx
Mechatronic Hand Mimics Human Anatomy to Achieve Dexterity | Hackaday
Behold the wondrous complexity of the human hand. Twenty-seven bones working in concert with muscles, tendons, and ligaments extending up the forearm to produce a range of motions that gave us everything from stone tools to symphonies. Our hands are what we use to interface with the physical world on a fine level, and it’s understandable that we’d want mechanical versions of ourselves to include hands that were similarly dexterous.

That’s a tall order to fill, but this biomimetic mechatronic hand is a pretty impressive step in that direction. It’s [Will Cogley]’s third-year university design project, which he summarizes in the first video below. There are two parts to this project; the mechanical hand itself and the motion-capture glove to control it, both of which we find equally fascinating. The control glove is covered with 3D-printed sensors for each joint in the hand. He uses SMD potentiometers to measure joint angles, with some difficulty due to breakage of the solder joints; perhaps he could solve that with finer wires and better strain relief.
hackaday  prosthetics  hand  robotics  medical 
15 hours ago by cyberchucktx
Laser Cut Cardboard Robot Construction Kit Eases Learning And Play | Hackaday
It has never been easier to put a microcontroller and other electronics into a simple project, and that has tremendous learning potential. But when it comes to mechanical build elements like enclosures, frames, and connectors, things haven’t quite kept the same pace. It’s easier to source economical servos, motors, and microcontroller boards than it is to arrange for other robot parts that allow for cheap and accessible customization and experimentation. That’s where [Andy Forest] comes in with the Laser Cut Cardboard Robot Construction Kit, which started at STEAMLabs, a non-profit community makerspace in Toronto. The design makes modular frames, enclosures, and basic hardware out of laser-cut corrugated cardboard.
hackaday  robotics  cardboard  makerspace 
16 hours ago by cyberchucktx
Balancing Robots From Off-The-Shelf Parts | Hackaday
In this day and age, we are truly blessed as far as the electronics hobby is concerned. Advanced modules such as gyros and motor controllers are readily available, not just as individual parts, but as pre-soldered modules that can be wired together with a minimum of fuss and at low cost. This simple balancing robot is a great example of what can be done with such parts (Google Translate link).

The robot has an ESP32 running the show, which provides both the processing power required, as well as the WiFi interface used to control the ‘bot from a smartphone. This is achieved using an app from JJRobots, an open-source robotics teaching resource.
hackaday  robotics  tutorial  balancing 
yesterday by cyberchucktx
A Better Charger For Your Coin Cell Batteries | Hackaday
Rechargeable coin cell batteries are great for all your small projects. They look exactly like regular coin-cell batteries, but in a shocking turn of events you can recharge these little guys. Just what you need for your Arduino smart watch, or whatever else the kids are doing these days. But if these batteries are rechargeable, you need a charger. That’s where [Jon]’s entry for the Hackaday Prize comes in handy. It’s a small, cheap charger for LIR2032 and other rechargeable batteries comes in. It’s barely larger than the battery itself, and it plugs right into a USB port.
hackaday  charger  battery  usb 
9 days ago by cyberchucktx
HeadOCopter! Life-Size Human Head FPV Drone | Hackaday.io
The "HeadOCopter" started out as a joke, as these things often do, but when you've got access to the technology to make it real you'd be stupid not to! The HeadOCopter is powered by a BrainFPV RADIX flight controller which is housed in a 3D printed TPU brain. It runs on a 4S LiPo and is spinning 12" props on 700kv motors. At over 1000mm motor to motor, this baby is technically XClass!
hackaday  drone  human  humor  halloweeen 
9 days ago by cyberchucktx
Hack My House: Running Raspberry Pi Without an SD Card | Hackaday
one solution is to use PXE booting with the Raspberry Pi 3. That’s a fancy way to say we’ll be booting the Raspberry Pi over the network, instead of from an SD card.So let’s dive in and see what the Preboot Execution Environment (PXE) is all about and how to use PXE with Raspberry Pi.
hackaday  pxe  boot  sysadmin  networking  raspberrypi 
10 days ago by cyberchucktx
Control RC 433MHz Sockets by Voice Using Google Home - Hackster.io
Normally, the 433MHz cannot be controlled from a smartphone or through voice assistants like the Google Assistant and Alexa. This project shows a workaround by which RC/RF sockets can be controlled using Google Assistant/Google Home. Uses IFTTT, adafruit.io, and Google assistant API.
hackaday  google  googlehome  voice  wireless  adafruit  iot  internetofthings  mqtt 
10 days ago by cyberchucktx
Spectra: Open Biomedical Imaging | Hackaday.io
Biomedical Imaging has previously been expensive and near impossible to hack and experiment with. If more people experimented and understood how imaging works we could move it forward much faster and make these transformative technologies available to everyome. OpenEIT(EIT is for electrical impedance tomography) uses non-ionizing AC current to recreate an image of any conductive material, such as your lungs, arm or head, using the same tomographic reconstruction technique as a cat scan. The PCB is only 2" square, with bluetooth, making it a portable and hackable way to do biomedical imaging!
hackaday  medical  imaging  scanner  biomedical  diagnostic 
11 days ago by cyberchucktx
SENSEation @ Hackaday.io
We strive to develop a modular platform for remote measurements that is modular, low cost, reliable and easy to use. We research energy usage and comfort in buildings. Therefore, we start this journey with measurements concerning buildings in mind but we also hope to enable applications in other domains.
hackaday  sensors  modular  homeautomation 
14 days ago by cyberchucktx
Palm Power! | Hackaday.io
Palm power is a device to control a robot’s motion through Bluetooth just by tilting a hand forward, backward, left or right. With touch switches to control additional features.
hackaday  gesture  palmpower 
19 days ago by cyberchucktx
Universal Radio Hacker | Hackaday
If you are fascinated by stories you read on sites like Hackaday in which people reverse engineer wireless protocols, you may have been tempted to hook up your RTL-SDR stick and have a go for yourself. Unfortunately then you may have encountered the rather steep learning curve that comes with these activities, and been repelled by a world with far more of the 1337 about it than you possess. You give up after an evening spent in command-line dependency hell, and move on to the next thing that catches your eye. You could then be interested by [Jopohl]’s Universal Radio Hacker. It’s a handy piece of software for investigating unknown wireless protocols.
hackaday  sdr  radio  softwaredefinedradio 
21 days ago by cyberchucktx
Doppler Gesture Sensing in JavaScript | Hackaday
[Daniel] stumbled on an interesting paper (which we featured before) on Doppler gesture sensing using only a computer’s speaker and microphone. Daniel’s JavaScript library generates a sine wave at 20 kHz that’s played through the computer’s speakers. The frequency is high enough that it’s pretty much inaudible. While the tone is being played through the speakers, the computer’s microphone is used to sample the audio and calculate the frequency spectrum of the signal. As you move your hand closer to the computer while the tone is playing, the frequency of the received signal shifts higher; as you move your hand away, it shifts lower. [Daniel]’s script looks for this frequency shift and uses it to trigger events.
hackaday  doppler  gesture  javascript  browserbased 
21 days ago by cyberchucktx
Gesture Control for Lunch Money | Hackaday
[Dimitris Platis] wanted to add gesture control to his PC. You’d think that would be expensive, but by combining a diminutive Arduino, a breakout board with a gesture controller, and an interconnect PCB, he managed to pull it off for about $7.
hackaday  gesture  diy  arduino 
21 days ago by cyberchucktx
The Exquisite Badges Of Open Hardware Summit | Hackaday
The past few years have been all about electronic conference badges and this year is no different. Right now, we’re setting up at the Open Hardware Summit at MIT, and this year’s badge is nothing short of extraordinary. It’s a WiFi and Bluetooth-enabled e-paper badge, individually programmed for every attendee. The 2018 Open Hardware Summit badge is a work of art, and it was all created over on hackaday.io.
hackaday  badge  2018  openhardware 
21 days ago by cyberchucktx
SERPENTINE : Hand Gesture Recognition using Self-Powered Stretchable Multi-Purpose Vibration Sensor @ Hackaday.io
Rethinking about the materiality of tangible input interfaces and reinforcing them with sensing capabilities is the beauty and intent of our innovative approach in this research. We have invented Serpentine, a highly stretchable self-powered sensing interface empowered with signal processing for gesture recognition.
hackaday  gesture  lowpower  flexible 
22 days ago by cyberchucktx
Notable Board Books | Hackaday.io
Music benefits people. From toddlers to seniors, music enhances moods, promotes health, and stimulates memory. Recently I shared a children’s musical board book with my mother who has Alzheimer’s. I was amazed at how alert and happy she became when she heard the familiar songs. Wouldn’t it be wonderful if Mom could have her own book with age appropriate music?
My husband Mike and I (Annelle) are creating Notable Board Books. Notable Board Books are customizable, interactive books containing personalized music and pictures. To encourage sing-alongs, Notable Board Books include an audible track with instrumental and vocal music.
hackaday  assistedliving  book 
22 days ago by cyberchucktx
Electronic Barrette Hub: A base station of all your blinking lights | Hackaday.io
Electronic jewelry is difficult to make, especially when it's supposed to be worn on your head. Things like earrings, hair clips, studs, and even glasses are difficult because of the size and power requirements. There is one accessory that doesn't have such strict requirements: it can be large and relatively heavy, it doesn't touch your skin, and it can fit a rechargeable battery: it's the hair clasp, also known as barrette.

The idea here is to use a barrette as a sort of a hub providing power and control to other accessories on your head. It will contain a microcontroller programmable with CircuitPython, an accelerometer, a light sensor and a microphone — so that you can make things react to movement and sound — and a dozen small sockets, into which you can plug thin wires leading to the actual accessories. You can even have LED eye lashes or #Mechatronic Ears with this!
hackaday  power  barette  hair 
22 days ago by cyberchucktx

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