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Archive: Electronics
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September 6, 2007
Dorkbot DC, Sept 10, 2007
Next Monday is the next meeting of Dorkbot DC. It looks to be a great event. Above is the PDF flyer, if you want to download and distribute. This will be our first meeting out of our old home, Provisions Library. This meeting will take place at the Marian Koshland Science Museum of the National Academy of Sciences (6th and E Streets, NW). See the site for more details (and if you come, introduce yourself to me).
Dorkbot DC - Link
Related:
- Physical Interactions over IP - Link
Posted by Gareth Branwyn |
Sep 6, 2007 02:00 PM
Announcements, Electronics, Events |
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| Comments (2)
SlugTerm - A Terminal for a Slug
Phil writes -
This page describes how I've solved the problem of adding an interactive terminal to my Linksys NSLU2 (aka Slug) with a USB keyboard and an LCD display. My soltuon consists of some C++ code (about 1000 lines) and some hardware to attach the display to USB. I hope that it will be useful to other Slug users.SlugTerm - A Terminal for a Slug - Link.
More about the Slug can be found here (NSLU2-Linux ) - Link.
Posted by Phillip Torrone |
Sep 6, 2007 07:00 AM
DIY Projects, Electronics |
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External enclosure with custom microcontroller
Al writes -
A homebrew microcontroller to monitor a computer's hard drive usage was originally posted on Makezine back in Feb. of 2006. This apparently generated a spark. A reader created a very attractive project based on that with some creative customizations using SATAValut from CoolDrives.External enclosure with custom microcontroller - Link.
Posted by Phillip Torrone |
Sep 6, 2007 06:00 AM
DIY Projects, Electronics |
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ORB - Open random bit generator
Here's an open source random bit generator, source and schematic included... Link.
Posted by Phillip Torrone |
Sep 6, 2007 01:00 AM
Electronics, Open source hardware |
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| Comments (2)
September 5, 2007
Breaking down and repacking a 36V battery pack
SLK Electronics has a piece on their site about breaking down a DeWalt 36V A123 high-power Li-ion batteries to make your own battery configurations. This (and several other related articles on the site) is gear towards electric model planes, but is obviously applicable to any application.
Dissecting DeWalt 36V Packs (A123 Systems) - [via] Link
Related:
- Li-ion Life Extension - Link
- HOW TO rebuild a Li-Ion battery pack - Link
- HOW TO - Refilling laptop batteries - Link
Posted by Gareth Branwyn |
Sep 5, 2007 05:42 PM
DIY Projects, Electronics, Flying, Gadgets, Toolbox |
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| Comments (3)
Transmitter/receiver/camera system for rocketry
BoosterVision is selling a 1-watt transmitter/receiver and CCD camera system for high-power rocketry. Not bad for $280. An included 12db Radome RX antenna increases range up to 15,000 feet.
One Watt Hi-Power Transmitter / Hi-Gain Antenna System - [via] Link
Related:
- Model, sport rocketry reference source - Link
- Estes educator - Free resources for model rocketry - Link
- AERO-PAC: High Power Amateur Rocketry - Link
From the pages of MAKE:
Happy Blastoff Smoke, sound, and fury at the Large Dangerous Rocket Ship launchpad. Read this article in MAKE: 10: Home Electronics, Page 48. To get MAKE, subscribe or purchase single volumes. Subscribers--read this article now in your digital edition!
Posted by Gareth Branwyn |
Sep 5, 2007 04:58 PM
Electronics, Imaging, Science, Toys and Games, Wireless |
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Engineering TV
As the name implies, Engineering TV is a series of webisodic programs dedicated to various technologies, techniques, and research efforts of interest to electronics, robotics and design engineers, or amateurs interested in these subjects.
Posted by Gareth Branwyn |
Sep 5, 2007 03:00 PM
Electronics, Gadgets, Robotics, Science |
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| Comments (1)
Dude sends robot replacement to work
I'm really surprised that telepresence/telerobotics hasn't caught on more than it has. IRobot was R&Ding this tech nearly a decade ago. And the tools to make it happen have only gotten cheaper and more widely distributed. In this story, reverberating around the Interwebs, Ivan Bowman, a computer programmer, works from his living room in Nova Scotia, while his "robot" (basically a remotely-controlled computer on wheels) named "IvanAnywhere" motors around the offices of his employer, iAnywhere Solutions, over 830 miles away, in Waterloo. As with the iRobot experiences and those of others who've played with tele-robotic presence since, co-workers soon forget that they're talking to a mobile coat rack and act as if Bowman is actually there. IvanAnywhere has even attended company parties.
Meet IvanAnywhere - Link
Posted by Gareth Branwyn |
Sep 5, 2007 01:02 PM
Computers, Electronics, Robotics, Telecommunications |
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| Comments (1)
VGA over Cat-5 cable
Jason @ Hackszine writes -
If you've ever needed to place a VGA monitor further than the standard 6 foot cable allows, you may be familiar with some of these problems:VGA over Cat-5 cable - [via] Link.* VGA cables are expensive
* Several cables chained together affects signal quality
* Running a VGA cable through conduit is pretty difficultYou can avoid a lot of these problems by making a couple VGA to Cat-5 adapters. This will let you run standard, cheap, easy-to-pull ethernet cable between your computer and video display. The twisted pair helps reduce signal loss, though it doesn't work quite as well as the long-run shielded VGA cables. Unless you need to extend your display to over 50 feet, this might be a much easier and more cost-effective way to do things.
Posted by Phillip Torrone |
Sep 5, 2007 12:01 AM
DIY Projects, Electronics |
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| Comments (8)
September 4, 2007
HOW TO - Prep schematics for PCB fabbing
This Instructable outlines the process of preparing to get your circuit designs fabbed into professional PCBs. It walks you through, from designing the schematic to preparing the Gerber files to finding a fabber and ordering your job. And yes, they got theirs done in China. We'll leave the moral, political, and environmental decisions in that regard up to you.
Professional PCBs almost cheaper than making them at home - Link
Related:
- Ordering PCBs from China - Link
- Gold Phoenix vs. Olimex - Link
- HOW TO - Manufacture your own PCBs - Link
- PCBs with magazine paper - Link
Posted by Gareth Branwyn |
Sep 4, 2007 06:00 PM
DIY Projects, Electronics, Instructables |
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| Comments (2)
Wiimote as "firefighting" robot
A "firefighting" robot which uses the Wiimote as the controller talking to a desktop Linux machine over Bluetooth.
Wiimote controlled firefighting robot - Link
Related:
- Wiimote as car accelerometer - Link
- Wii Loop Machine - Wiimote Beats - Link
- Wiimote controlled robot arm - Link
Posted by Gareth Branwyn |
Sep 4, 2007 02:00 PM
DIY Projects, Electronics, Gaming, Robotics |
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| Comments (0)
NSA@home - distributed FPGA MD5 cracker
Here's something fun to do with HD-video electronics... -
NSA@home is a fast FPGA-based SHA-1 and MD5 bruteforce cracker. It is capable of searching the full 8-character keyspace (from a 64-character set) in about a day in the current configuration for 800 hashes concurrently.NSA@home - distributed FPGA MD5 cracker - [via] Link.The cracker is built out of surplus Grass Valley HD video transform boards, scrapped by GV because of defects. A useful tool was developed to assist the board reverse-engineering effort.
The chip design consists of a pattern generator, a hash algorithm and a lookup engine in each FPGA. The FPGAs are connected to smaller "switch FPGAs", which distribute data to and gather results from them. Those switches link to each other and ultimately to an USB port (which had to be added).
A dedicated PC box communicates with the boards through an USB hub. The software running on it post-processes hit indications from the FPGA boards and prepares inputs for them.
Posted by Phillip Torrone |
Sep 4, 2007 12:00 PM
Electronics, Home Entertainment |
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DIY LM317 power supply
Here's how to make a DIY LM317 power supply...
Being able to poke voltages into your projects will help you debug. You can buy an adjustable power supply for $50 or so, or build your own from a kit (another one) Just look for any power supply kit that has a LM317 in it.Electronic Equiptment - DIY LM317 power supply - Link.You can also build it for $10 using a 9V battery as input and test clips for outputs. This won't be able to provide a lot of power (cause its just a 9V) but it can go pretty far for testing and debugging
Posted by Phillip Torrone |
Sep 4, 2007 08:00 AM
DIY Projects, Electronics |
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September 3, 2007
Rising from the pumpkin patch...
Summer is over. Let the Halloween hacks begin! This one, sent to us by David Fowler of uC Hobby, uses printer mechanics, a BASIC Stamp, and a Park Zone light (an ultrasonic proximity detector used for tight-space garage parking). It senses when someone is close to the front door and triggers a pumpkin to rise from the planter box on the porch.
Halloween automatic pumpkin - Link
Related:
We are sold out of the illustrated cover version of the MAKE Halloween issue in the Maker store. This version of the cover will be on newsstands on 9/4 so if you want that one that will be the place to get it.
However, we have the alternate cover version available for pre-order (get it here) and a collector's two pack with both cover versions for a special price, you can pre-order the two pack or get the special edition - Link.
Posted by Gareth Branwyn |
Sep 3, 2007 12:17 PM
Computers, DIY Projects, Electronics, Halloween |
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| Comments (2)
September 2, 2007
Internal USB/ReadyBoost hack for Ultra-Mobile PC
"ThoughtFix," over at UltraMobileGeek, has a piece on how to add an internal USB hub, for adding Flash memory and ReadyBoost (the Flash-based memory cacher for juicing Vista) to a UMPC, in this case, the eo V7110. He's not sure what he's going to do with the other two internal ports, maybe add more Flash, maybe an RF remote.
Adding Internal USB (and internal ReadyBoost) to a UMPC - [via] Link
Posted by Gareth Branwyn |
Sep 2, 2007 02:27 PM
Computers, DIY Projects, Electronics, Mobile |
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| Comments (0)
September 1, 2007
More mint-tin amp action
Michael O'Brien, a.k.a. Turbotron, has posted pics of this project to the MAKE Flickr Pool. It's a mint-tin amp based on the LM386 chip, the same op-amp chip used in the MAKE Mousey the Junkbot and Cracker Box Amp projects. The case is an Altoids box, painted gloss black enamel, the grill is from a PC power supply, and the control hardware is from The Shack.
Little gem - Link
Little Gem Circuit Diagrams - Link
Related:
From the pages of MAKE:
Project: The $5 Cracker Box Amplifier. Small box, big sound. Read this article in MAKE: 09: Fringe, Page 104. To get MAKE, subscribe or purchase single volumes. Subscribers--read this article now in your digital edition!
Posted by Gareth Branwyn |
Sep 1, 2007 01:04 PM
DIY Projects, Electronics, Portable Audio and Video |
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| Comments (0)
USB POV SMD kit
This is cool, a USB surface mount version of the POV kit we carry here @ MAKE.... ohararp writes -
Have you ever seen a kit developed solely for learning how to assemble an electronic circuit of only SMT parts? Did it have BLUE LEDs? I haven't seen one with either! Expect to see all SMT components, acrylic stencil, solder paste, acrylic scraper, solder wick, enclosure, and battery all in one kit for about $30! A full instructional manual to include schematic and source code (picbasic) will also be provided. Stay tuned as we are in the process of acquiring all the necessary materials for a 50 piece run!...OHARARP LLC - [via] Link and photos.
Related:
MiniPOV- An Inexpensive persistence of vision kit- Link.
POV projects - Link.
Posted by Phillip Torrone |
Sep 1, 2007 03:00 AM
DIY Projects, Electronics |
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| Comments (6)
August 31, 2007
Kazuhisa Terasaki's Weird-72 wooden humanoid
Kazuhisa Terasaki is known for making whimsical robots out of wood. Basically, they're wood, servos, and an MCU. His robot Weird-7 was such a hit in Japan, he produced a kit for it. Now he's showing off a much more sophisticated bot, Weird-72, that's still mainly wood and a crapload of servomotors. Kazuhisa's website has lots of information, pictures, video and even step-by-step on building Weird-7. Unfortunately, it's all in Japanese.
Weird-72 Creator Kazuhisa Terasaki Talks About His Robot Creations [ROBOT-DREAMS] - Link
Kazuhisa Terasaki Weird-7 site - Link
Posted by Gareth Branwyn |
Aug 31, 2007 08:00 AM
DIY Projects, Electronics, Robotics |
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| Comments (0)
Solar bike and blog tour of Germany
Steve Paine, a.k.a. Chippy, is a Brit living in Germany. He's currently on a bike trip, along the Rhein River, which he's blogging about using a UMPC (Ultra-Mobile PC) and portable solar tech. Those geeks in the house who are as ancient as I am will remember Steve Roberts, the "high-tech nomad," who took net-connected, solar-powered bike trips in the computing Jurassic of the 1980s. As you might image, the gear has gotten decidedly more svelte since then. Details of the tech "Chippy's" is using can be found on his blog.
Posted by Gareth Branwyn |
Aug 31, 2007 07:00 AM
Bicycles, Electronics, GPS, Gadgets, Green, Mobile |
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| Comments (0)
Repacking NiCd battery packs
The amateur astronomy site Astromart has a short, informative piece on testing and repacking dead power tool NiCd battery packs. These packs are filled with "Sub C" cells. Taking apart a "dead" pack, you can test the individual cells and replace only the bad cells.
Rebuilding NiCd Rechargable Battery Packs - Link
Related:
- Cordless drills - Improve the battery - Link
- HOW TO - Revive Nicad batteries by zapping with a welder - Link
Posted by Gareth Branwyn |
Aug 31, 2007 05:00 AM
DIY Projects, Electronics, Gadgets, Green |
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| Comments (0)
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