Archive: Electronics
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January 28, 2007
Remote weather station

Here's a neat weather station from some students @ the Oregon Institute of Technology -
"The Remote Weather Station (RWS) is a computerized weather monitoring system using MINI-MAX/51-C micro-controller board from BiPOM Electronics and various sensors. RWS consists of two separate modules ( display module and weather module ) that are wirelessly linked together. RWS was developed by an ambitious team of students at Oregon Institute of Technology" [via] - Link.
Related:
- Davis Vantage Pro 2 Wireless Weather Station - Link.
- HOW TO build weather computers... - Link.
- Wild West Weather at MAKE! - Link.
- Make your own internet connected weather station - Link.

From the pages of MAKE:
- Citizen Weather Station. Collect meteorological data on your roof and donate it to science. MAKE 05 - Page 139. Subscribers: Read this article now in your MAKE Digital Edition or get MAKE 05 in the Maker store.
Posted by Phillip Torrone |
Jan 28, 2007 02:16 PM
DIY Projects, Electronics |
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| Comments (0)
January 27, 2007
Measuring resistance is *not* futile - Learn how to use a multimeter!

First we showed you how to solder.. now learn how to use a multimeter -
This video will show you how to:
- Test voltage
- Test current
- Test resistance
- Continuity
- Test batteries
- ... and more!
Posted by Phillip Torrone |
Jan 27, 2007 07:48 PM
DIY Projects, Electronics |
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| Comments (0)
HOW TO - LED Matrix

Robert writes -
"An LED Matrix is an array of LED's with the anode or positive terminal of each row connected together, and the cathode or negative terminal of each column connected together. Or the anode can be connected to a column, and cathode connected to a row." - Link.
Five pages of information, good stuff.
Posted by Phillip Torrone |
Jan 27, 2007 10:33 AM
DIY Projects, Electronics |
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| Comments (0)
January 26, 2007
8-bit science: Atarilab - Sensor lab

Brian writes -
"I saw Phil's post about the $5 light probe, and it triggered a memory of something that's pretty cool; the Atari Sensor Lab. Maybe I should pick one up on eBay I don't know if it will work with my 130xe, but I need an excuse to buy an Atari 400 or 800 anyhow :-)" Link & Google images.
Pictured here, Lab Light Module W/Cartridge New Atari NIB 800/XK/XE from MyAtari.com - Link.
Posted by Phillip Torrone |
Jan 26, 2007 07:32 PM
DIY Projects, Electronics, Retro, Science |
Permalink
| Comments (2)
HOW TO - Uncap/open various integrated circuits

Nick writes -
"Here's an article, with plenty of pictures, describing the methods of uncapping various types of chip packages. Most of the methods shown are applicable to at-home use and require minimal equipment." - Link.
Posted by Phillip Torrone |
Jan 26, 2007 01:33 PM
DIY Projects, Electronics |
Permalink
| Comments (4)
Picaxe Metronome

Chipwhich sent in this adjustable metronome built with the picaxe-08m for keeping rhythm when learning to play the piano - Link.
Posted by Phillip Torrone |
Jan 26, 2007 11:28 AM
DIY Projects, Electronics |
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| Comments (0)
HOW TO - Turn a broken digital camera into a time lapse camera

Natetrue writes -
"I must admit I loved my Konica Minolta DiMAGE x50 camera. When the screen broke on it I was very saddened - though I moved on to a customized Kodak V570, I figured the old camera might still be useful.
For a couple of months my old camera sat on my desk, staring into my soul with its beady little lens. I knew it was no good for interactive photography any more since its screen was quite broken.
So what's the least interactive kind of photography you can get? That's right! Time lapse!
For those not in the know, time lapse photography constructs a video from pictures taken at long intervals, causing very slow motion to speed up to something appreciable.
Normally you need a very expensive camera and remote timer rig combo to do time lapse photography, but today you will learn how to make one out of a broken digital camera (worthless), a handful of electronic parts ($6), and a few hours of your time (priceless?). " Thanks Jesse! - Link.
It's time for related time projects:
- Time lapse of one week's worth of art... - Link.
- Time lapse photos, Sonic Fabric, RFID implants - Link.
- Portrait of Abraham Lincoln in pennies (time lapse video) - Link.
- Escargot Grand Prix - DIY Time lapse snail races - Link.
- Time lapse plants - Link.
- A time-lapse series of the PVR assembly - Link.
- More - Link.
Posted by Phillip Torrone |
Jan 26, 2007 10:11 AM
DIY Projects, Electronics, Gadgets, Imaging |
Permalink
| Comments (3)
Make a physical RSS Reader with the MAKE controller kit! (It tells you the weather)

Brian (one our MAKE Media editors) writes -
"This is my first Make Controller project. I wanted to grab weather feeds and display them on the Serial-Enabled LCD display I got from Spark Fun. Weather Underground has RSS feeds for their forecasts, so I used the Make Controller's Socket* APIs to fetch the feed, grab everything between <description> tags, and display them on the LCD.
The LCD requires more power than you get via USB; you can either feed a separate 5v line into one of the VExt connectors (be sure to set the jumpers correctly) or use external power for the whole board and set the jumper for 5v. Make sure you're not giving the LCD more than 5v or you'll fry it.
For more information, see the project page
Related:
Posted by Phillip Torrone |
Jan 26, 2007 09:53 AM
DIY Projects, Electronics |
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| Comments (0)
HOW TO - How to read a resistor (PDF)

R. Stern writes -
"I work in a computer lab with a physical computing studio, and recently I cleaned out the component closet. It occurred to me that the reason we had a build up of unlabled resistors was because noone knew how to read them without the Resistulator widget or a resistance calculator website, so I made a sign to tack into the cabinet itself for offline calculation. You can download the PDF for your own use. " - Link.
Related:
Posted by Phillip Torrone |
Jan 26, 2007 07:01 AM
DIY Projects, Electronics |
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| Comments (10)
January 25, 2007
About OHM and his LAW


Richjd posted up a PC application called R.EXE to help you learn about Ohm's law...
"OHM's LAW - What it is. How it works.
A personal LEARNING AID for the interested and patient learner. Just read the following pages with care or call them up using the HELP function under program execution.
A) Learn the color code for resistors through practice.
B) Learn to calculate rsistance for SERIES, PARALLEL, SERIES-PARALLEL circuits. Circuits are auto-generated and displayed. Answers are verified and a score card is kept. Chose a level of difficulty: (E)asy, (D)ifficult, (E)xpert. A calculator and notepad is needed for the more advanced levels. Just a notepad will do for the (E)asy level.
IMPORTANT: Answering questions on impulse will lead to failure and frustration. READ the instructions that preceed the cursor with care and respond in kind before going on (pressing ENTER).
REMEMBER: GIGO - Garbage In, Garbage Out" - Link.
Posted by Phillip Torrone |
Jan 25, 2007 09:01 PM
Computers, DIY Projects, Electronics, Instructables |
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| Comments (4)
Recumbent generator - the bent genny

FrankG writes -
"This is the 4th & final installment on the recumbent generator project... The key points were to track the increases in power as a "Blank Rotor" was added to the single rotor, and then a full 2nd magnetic rotor. The results are graphed clearly showing how power out would rise at successively lower RPMs...Total Output 203Watts." - Link.
More:
Posted by Phillip Torrone |
Jan 25, 2007 04:19 PM
DIY Projects, Electronics |
Permalink
| Comments (0)
HOW TO - Ardunio, Bluetooth, PD, and Windows scripting button box

Danomatika writes -
"I made a small project that combines Arduino, bluetooth, pd, and windows scripting in python. Basically, an arduino wir;less play button provides transport control over FLStudio or any other windows app. Thought this might be useful to other makers!" - Link.
Posted by Phillip Torrone |
Jan 25, 2007 01:06 PM
Computers, DIY Projects, Electronics |
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| Comments (0)
HOW TO - Make your own laptop

Here's how to make your own laptop, Torquil writes -
"I decided to create a laptop that at any point, I could upgrade every component as they grew too old. For very little money, I have created a 2GHz processor laptop with 1GB Ram, and an ATI Radeon 9200 128MB graphics card. OK, so it is a PCI graphics card and could be faster, but everything is upgradable - I could slot in a motherboard with PCI Express in the future.
The size of this could have been a lot smaller. With a Nano-ITX mainboard and no external graphics card it could almost be as small as a regular laptop, but that was not my plan. It needed to be as powerful as a regular desktop or I could not use it every day for office applications and games." [via] - Link.
On a related note, here's a review @ Slashdot of our "Make Projects: Small Form Factor PC" PDF

"Make Projects: Small Form Factor PCs provides detailed step-by-step instructions on building a variety of small form factor systems, starting from the larger ones (about the size of a shoe box) and working its way down to the smallest (which is about the size of a pack of gum). It includes instructions on creating a digital audio jukebox, digital video recorder, wireless network range extender, home network gateway, network monitor, portable firewall, cheap Wi-Fi SSH client, and a Bluetooth LED sign." - Link.
Make Projects: Small Form Factor PC - Maker store.
Posted by Phillip Torrone |
Jan 25, 2007 03:13 AM
Computers, DIY Projects, Electronics |
Permalink
| Comments (0)
HOW TO - Watch futurama on an 8x8 pixel screen

SethJ writes -
"tired of hi-def? (booo!!!)
here's how to convert otherwise reasonable quality video into pixelated garbage and play it on a 2 color 8x8 led matrix, with no sound and only moderate sync.
ingredients:
- (1) 8x8 2 color led matrix
- (1) atmel avr atmega168
- (2) 74hc595 shift register
- (1) 3.3V regulator
- (1) bunch of linux software
this is a mid level avr project, in that it assumes ( does not explain ) how to get a program onto a chip. it's pretty easy once you've done it though, so don't worry." - Link.
Posted by Phillip Torrone |
Jan 25, 2007 01:57 AM
DIY Projects, Electronics, Instructables |
Permalink
| Comments (2)
January 24, 2007
HOW TO - $5 light probe

Falconphysics writes -
"I teach high school physics and I use a lot of expensive probeware to collect data. The only reason I can do this is my school has been collecting the probes over a number of years, building our collection slowly over time. For those who aren't science teachers, probeware refers to a collection of interfaces used to connect a variety of sensors to a computer or graphing calculator. These interfaces can allow for real time data collection and graphing or can serve as data-loggers collecting data over time.
The two largest vendors of educational probeware are Vernier and Pasco:
http://www.vernier.com/
http://www.pasco.com/
Not every school has the ability/money to do probeware based labs, however. So, here is a description of how to create a really simple probe that will allow you to see the fluctuations in light caused by alternating current or see the signal from a TV remote control (as well as do other things I'll describe in a future Instructable).
Total cost is less than $5, but you need a computer with an oscilloscope program installed." - Link.
Posted by Phillip Torrone |
Jan 24, 2007 09:33 PM
DIY Projects, Electronics, Instructables, Science |
Permalink
| Comments (0)
HOW TO - Harbor Freight LED flashlight - of DEATH!!

Tool Using Animal shows you how to mod a flashlight with UV LEDs - good for mineral fluorescence, scorpion hunting and vaseline glass shopping.
"Danger Will Robinson, This is a UV mod for my beloved harbor freight flashlight So here comes the disclaimers. UV is dangerous, it'll give you cancer, cataracts, and steal your check book, if you build this, You Will Die!! Although probably your death will not be related to this instructable. But seriously DO NOT shine this into anyone's eyes." - Link.
Related:
- Fun with UV - Link.
- AC Ryan UV kit review - Link.
- DIY Photography - Cheap UV light source - Link.
- Build your own UV exposure box with fluorescent like lamps - Link.
- UV-Tube for Disinfecting Water - Link.
- HOW TO - Fluorescent face art... - Link.
Posted by Phillip Torrone |
Jan 24, 2007 06:44 PM
DIY Projects, Electronics |
Permalink
| Comments (1)
Clock made from a taxi meter


Check out these great clocks from decny.com -
"I got interested in clocks as a way of learning some electronics, particularly microcontrollers. Besides, I like blinking lights. I favor the mid-range PICs from Microchip and use a development board/programmer from Mikroelektronika." - Link.
Posted by Phillip Torrone |
Jan 24, 2007 03:28 PM
Arts, Electronics |
Permalink
| Comments (0)
VictorioNixie tube

Jonny5rd writes -
"This "electrochemical and electromechanical apparatus for the display of illuminated messages" is really a (heavily) modified persistence-of-vision toy. This toy was a pen i picked up at the local pharmacy (Walgreen's) with a spinning head that displayed whatever message you programmed in. It was only $5.00, so i picked up a couple and let my imagination fly.
This is by far the most sculptural of all my creations, as it really serves no practical purpose :)
All in all, it cost me about $20US and two weeks worth of spare time (about 10 hours)" Thanks Mikest! - Link.
Posted by Phillip Torrone |
Jan 24, 2007 02:26 PM
Arts, DIY Projects, Electronics |
Permalink
| Comments (0)
Open source USB lab instruments (almost)

Syscomp Electronic Design have some great USB lab instruments: Oscilloscope, waveform generator, network analyzers and microcomputer kits. The software is open source for Mac, PC and Linux... but the hardware isn't. I'm going to see if they'd consider changing that and also doing kits...
"You know how useful it is to have your own computer, think what you could do with your own electronics lab.
- Complete lab exercises outside of scheduled lab hours
- Learn at your own speed
- Explore new circuits
- Equip a hobby workshop
System Features
- Virtual Front Panels: all controls are operated from the computer host
- Open source software runs under Windows and Linux
- Computer-Based for storage, processing, and printing of results
- Exchange data with other programs such as spreadsheets and mathematical analysis suites
- Modular design accommodates any combination of instruments and makes the system expandable with new instruments
- Connects easily to any computer via a USB port
Use the instruments separately or combine multiple instruments to create new measurement capabilities such as a curve tracer." - Link.
More:
- Open Instrumentation Project - Link.
Posted by Phillip Torrone |
Jan 24, 2007 09:31 AM
Computers, DIY Projects, Electronics |
Permalink
| Comments (4)
LED Football


Great idea sure to find its way to toy shelves (if it hasn't already) but until then... here's how to build your own LED NERF-like football - Link.
Posted by Phillip Torrone |
Jan 24, 2007 08:56 AM
DIY Projects, Electronics, Instructables |
Permalink
| Comments (0)
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