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Archive: Electronics
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July 9, 2007
HOW TO - Make a monster quartz halogen bike light
Dan writes -
It was a dark and stormy night...and the 3-watt generator lamp was sporadic, cutting out altogether each time a whiff of snow happened to come between its roller and the tire. "There's got to be something better," the mad cyclist thinks to himself as he squints to make out the faint halo of light cast by the 3-watt bottle dynamo generator.HOW TO - Make a monster quartz halogen bike light - Link.That mad cyclist happened to be yours truly, and the above situation real to life--and the inspiration for the MONSTER Quartz Halogen Bike Light!
The cost of this project was somewhere around $100. I say 'around' because I already had some of the hardware!
Posted by Phillip Torrone |
Jul 9, 2007 09:00 AM
Bicycles, DIY Projects, Electronics |
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| Comments (1)
HOW TO - Make conductive glue
Mikey77 shows how to make your own conductive glue and then glue a circuit on clear plastic or any surface... Link.
Posted by Phillip Torrone |
Jul 9, 2007 08:00 AM
DIY Projects, Electronics |
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Heathkit schematic diagram archive
Goodness, this is one of the best sites ever - a very large archive of Heathkit schematics... Link.
Posted by Phillip Torrone |
Jul 9, 2007 06:00 AM
DIY Projects, Electronics, Kits, Retro |
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| Comments (2)
I am not a bomb - talking solar lamps tell you they're not bombs
R. Stern writes -
Inspired by the January Boston ATHF bomb scare, Rees Shad and I have created some publicly-installed solar lamps that proclaim, "I am not a bomb" in one of 12 languages. They are on view in the Kingston, NY Peace Park through October as part of their sculpture biennial. These Declarative Lamps begin speaking and blinking at dusk, and they use the current air temperature to determine how often they speak, much like the way crickets chirp. We've made available our materials list, code, and circuit schematic for public use.Sternlab - Link.
Source and schematic included, outstanding work R. Stern & Rees Shad.
Posted by Phillip Torrone |
Jul 9, 2007 04:00 AM
Arts, DIY Projects, Electronics |
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| Comments (5)
July 8, 2007
Barebones Arduino on a breadboard
Here is a truly barebones Arduino setup. Just the Arduino chip and a few support parts. This has to be close to the simplest and lowest cost way to play with microcontrollers. The only special parts are the resonator and the Mega168 programmed with the Arduino boot loader. Everything else you should already have as an electronics hobbyist.
Ardunio Breadboard - [Via] Link
Related:
- HOW TO - Arduino breadboard shield - $10 & 10 mins - Link
- Arduino ProtoShield assembly + use - Link
- HOW TO - Control your Mac from Arduino, the easy way - Link
- Arduino variant - Bare-Bones Board - Link
Posted by Gareth Branwyn |
Jul 8, 2007 12:18 AM
Computers, DIY Projects, Electronics, Open source hardware |
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| Comments (4)
July 7, 2007
HOW TO - Make an aux-in for the Bose SoundDock
Will O'Brien posted this short how-to on Hack A Day because he says the site gets quite a few hits on posts about the Bose SoundDock portable speaker system. On my site, Street Tech, the review of the SoundDock also gets lots of traffic, so there appears to be a lot of SoundDock enthusiasts out there...
There is a solderless way to hack an aux input for the Sounddock.(1) Go to Wal-mart (or elsewhere) and buy the Griffin Dock Adapter for iPod Shuffle (~$20) and a Belkin Speaker and Headphone splitter (~$4). (The Belkin splitter is needed in order to fit properly over the Shuffle plug on the device, but other cables/adapters might work.)
(2) Remove the existing adapter plate and replace it with the Dock adapter.
(3) Set the switch to speaker. (Very Important!)
(4) Plug in one end of the Belkin adapter and you are ready to go! Any input signal automatically activates the Sounddock. Now you have a fully functional female and male stereo headphone input for your Sounddock.-->Total cost ~$25 and no soldering required.
Hack A Day - Link
Street Tech Bose SoundDock review - Link
Posted by Gareth Branwyn |
Jul 7, 2007 10:10 AM
DIY Projects, Electronics, Gadgets, Home Entertainment, Music, Portable Audio and Video |
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July 6, 2007
Make Your Own Printed Circuit Boards - Make: Video Podcast
This week I teamed up with Xander Hudson to make PCBs. Besides being pretty, making your own printed circuit boards is fun and you can have a prototype board ready in a few hours.
First you need a design. There are a bunch of timer circuits in the latest issue of Make: that are begging for circuit boards. There are lots of designs online at places like discovercircuits.com
Eagle CAD has a bit of a steep learning curve, but it's got a library of parts that you can drag and drop onto the board that make getting everything the right size and proportion easy.
If you don't want to design your own circuit, you can download all the source files, including a pdf, and print them out on a laser printer out to make the Make: Light. - Link (Zip File)
Also, make sure to download the pdf that goes along with this podcast that includes a great article by Andrew Argyle that includes material lists and step by step instructions. - Link
Weekend Projects is sponsored by Microchip Technology. Check out their seminars and the Microchip Masters Conference.
Posted by Bre Pettis |
Jul 6, 2007 07:00 AM
DIY Projects, Electronics, MAKE Podcast, Weekend Projects |
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July 5, 2007
Auto-recorder project
Amin Rahimi's recorder project...
Being the huge band geek that I am, I decided that my project should involve some kind of musical instrument. Given the limited time that I had to complete the project, I decided to have my computer play a simple Yamaha recorder that was sitting in one of my drawers.Recorder - Link.Because of a limited budget, I used mostly components that I already had. The air compressor came from my car horn, which is capable of producing 138 decibels. This was clearly not the ideal compressor to use, but it was enough to get the project done without spending loads of money. As a result, the sound of the motor drowns out a lot of the recorder pitch as you can hear in the videos linked at the bottom of this page. You'll also notice that the speed of the motor changes with the pitch of the recorder to create the proper tone. This was done using pulse width modulation.
Posted by Phillip Torrone |
Jul 5, 2007 12:00 PM
DIY Projects, Electronics, Music |
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Nixie clock build / review
Yngvarr writes -
Well, I built a nixie clock in the past, so why build another one? I saw this nice clock listed on makezine recently, and really couldn't resist...The kit arrived, well packaged. You can see below that the kit maker put a lot of personal effort into this. He supplies as much as feasible. That means wire, shrink tubing, solder and solder wick. Nice touch.Another nixie clock - [via] Link.
Posted by Phillip Torrone |
Jul 5, 2007 10:00 AM
DIY Projects, Electronics |
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DRO-350
Kit for reading digital scales usually found on eBay (and later for use with a mill)...
The DRO-350 is a three-axis digital read-out (DRO) for import Chinese scales and most quadrature encoders that is designed to be as capable as commercial DROs but be a low cost alternative for the metal-working hobbyist. The DRO-350 is a do-it-yourself (DIY) project, not a complete, commercially manufactured product. All of the components necessary to build it are commonly available at Digikey, Mouser, or other electronics distributors. The printed circuit board (PCB) is specifically designed to use only DIP devices to make it easier for a hobbyist to assemble. The custom components needed to build the DRO-350, the bare PCB and the silk-screened overlay, are available to order on this site. The construction process is shown in step-by-step detail on the construction page and it is easy enough for somebody with basic electronics experience to build.DRO-350 - Link.
Posted by Phillip Torrone |
Jul 5, 2007 01:00 AM
DIY Projects, Electronics, Kits |
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July 4, 2007
NES-style Hydra LEGO casemod
Hydra creator Andre Lamothe sent in this cool link: Michael Zinn posted a gallery of a cool Hydra casemod that combines LEGOs with an NES design. You can read more about it in the Parallax forums
Related
Posted by Brian Jepson |
Jul 4, 2007 05:00 PM
DIY Projects, Electronics |
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HOW TO - Make a LED picnic blanket
Pointcloud writes -
Here in Los Angeles there are a bunch of places to picnic in the evenings and watch an outdoor movie,Portable Water resistant LED Picnic Blanket with hard center serving surface! - Link.
like Cinespia in the Hollywood Forever Cemetery. This sounds scary, but when you have your own vinyl picnic blanket to spread out on the lawn, to protect from damp and spirits, with its own built in light source under a milk plex center table area, everyone can see what they're dishing up and which bottle is the red wine! I've designed this thing to fold up for easy transport to to run for 4-6 hours on rechargeable AA batteries.
Posted by Phillip Torrone |
Jul 4, 2007 12:00 AM
DIY Projects, Electronics, Instructables |
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July 3, 2007
Visual / Aural guitar tuner - "The Tune Trainer"
Gschoppe writes -
I have always dabbled in instruments. Over the course of my life, I've attempted (with varying success) Piano, Guitar, Banjo, Penny Whistle, Ocarina, Panpipes, Great Highland Bagpipes, Smallpipes, and Didgeridoo (don't ask, It was late, and I was a bit tipsy). In the process, I have continually hit one major hurdle. I am absolute rubbish at tuning by ear. I cannot tell if a guitar is out of tune in the least, unless it is so far off that you can play "The Bells of Saint Mary" without fretting at all. I was up late one night, experimenting with some PWM code for the Arduino when I suddenly had an epiphany. "Beat" tuning is very similar to measuring speed with a strobe. I thought that perhaps combining the obvious visual input of a strobe with the auditory input of a tone, could help me to better grasp tuning by ear. Thus an idea was born...Visual / Aural guitar tuner - "The Tune Trainer" - Link."The Tune Trainer" is a combination of two devices. One is a strobe that flashes at the frequency of a tuned string. The other is a tone generator. together they give the user two methods of tuning.
You can pick up an Arduino kit in the MAKE store to do this project too - Link.
Posted by Phillip Torrone |
Jul 3, 2007 08:00 AM
DIY Projects, Electronics |
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July 2, 2007
Paparazzi - open source pilot system
This is interesting, an open source software/hareware autopilot project... -
Paparazzi is a free and open-source hardware and software project intended to create an exceptionally powerful and versatile autopilot system by allowing and encouraging input from the community. The project includes not only the airborne hardware and software, from voltage regulators and GPS receivers to Kalman filtering code, but also a powerful and ever-expanding array of ground hardware and software including modems, antennas, and a highly evolved user-friendly ground control software interface.Main Page - Paparazzi - Link.All hardware and software is open-source and freely available to anyone under the GNU licencing agreement. Efforts are currently underway to organize production and retail sales of the autopilot and popular accessories, making the system much easier and more affordable for all.
The key feature of the paparazzi autopilot is its unique combination of infrared thermopiles and inertial measurement for attitude sensing, providing a robust and accurate attitude estimate that requires no ground calibration and can recover from any launch attitude.
Posted by Phillip Torrone |
Jul 2, 2007 08:00 PM
DIY Projects, Electronics, Open source hardware |
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| Comments (0)
USBtinyISP - Inexpensive USB AVR programmer
Ladyada released a USB AVR programmer, only $18 -
A simple open-source USB AVR programmer and SPI interface. It is low cost, easy to make, works great with avrdude, is AVRStudio-compatible and tested under Windows and MacOS X. Perfect for students and beginners, or as a backup programmer.USBtinyISP - Inexpensive USB AVR Programmer - Link & get one.The project is based off of the USBtiny code & design. The main improvements are: adjusting the code to allow it to act as a SpokePOV interface, adding lowlevel bitbang commands, and addition of a "USB good" LED. Other changes are new VID/PID (to make it official), removing some of the commands, and moving around the pins a bit.
You can build this design using the schematic and firmware, or buy a kit from the Adafruit webshop. Having a full kit available solves the "chicken & egg" problem of purchasing or building a USB programmer that then needs a programmer of some sort to 'kick start'. (See USBasp, AVRdoper, USBprog).
Posted by Phillip Torrone |
Jul 2, 2007 12:00 PM
DIY Projects, Electronics, Kits |
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Make a beetle robot
Here's how to make a very simple ladybug bot using PlayStation motors and rubber wheels from an old walkman - Link.
Posted by Phillip Torrone |
Jul 2, 2007 10:00 AM
DIY Projects, Electronics, Robotics |
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| Comments (1)
EMP shopping cart locker
Wow, "lock" up shopping carts with a homemade "portable yellow line"... debate in the comments!
Ever noticed a painted yellow line in the parking lot around many supermarkets and retail stores? The magic yellow line emits a signal that causes carts to stop dead in their tracks, preventing carts from leaving the parking lot.EMP shopping cart locker - [via] Link.Now you can build your own portable yellow line-- with up to a 20 foot range. Need I say more? Hint: it works inside the store.
Posted by Phillip Torrone |
Jul 2, 2007 05:00 AM
DIY Projects, Electronics |
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June 30, 2007
Interactive multi-touch display
turkey tek writes -
Between the Apple iPhone and Microsoft's interactive table, multi-touch displays are all the rage. This instructable will show you how to turn your lcd projector into an interactive multi-touch display table using a few cheap components readily available from the hardware store.Interactive multi-touch display - Link.
Posted by Phillip Torrone |
Jun 30, 2007 01:00 AM
DIY Projects, Electronics |
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| Comments (2)
June 29, 2007
AVR TV #3
The third episode of AVR TV is out: AVR32 Studio's official release, debugging tools strategy and a give away...AVR TV Issue Three - Link. The first 10 min is the sales engineer talking in the rain, but if you're really in to AVRs that might be ok.
More:
AVR resources, projects + more @ MAKE - Link.
Posted by Phillip Torrone |
Jun 29, 2007 07:00 AM
DIY Projects, Electronics |
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| Comments (0)
DIY TrafficStop
Imagitronics writes -
I retrofitted this generic "Blinking Traffic Light" with a USB module and wrote a simple Mac application to monitor my computer usage and reflect the results in by changing the stoplight. This project was born out of the frustration after being constanty interrupted by people who could not tell that I was already busy. The alpha version of the software detects the number of running applications on the computer using Cocoa's NSDistributedNotificationCenter and updates the light based on a user-defined threshold.TrafficStop - [via] Link.
Check out the poster on the wall!
Posted by Phillip Torrone |
Jun 29, 2007 03:00 AM
DIY Projects, Electronics |
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