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Archive: Electronics
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April 3, 2007
HOW TO - Tiny AVR Microcontroller powered by fruit
Gadre writes -
Some of the fruit and vegetables we eat can be used to make electricity. The electrolytes in many fruit and vegetables, together with electrodes made of various metals can be used to make primary cells. One of the most easily available vegetable, the ubiquitous lemon can be used to make a fruit cell together with copper and zinc electrodes. The terminal voltage produced by such a cell is about 0.9V. The amount of current produced by such a cell depends on the surface area of the electrodes in contact with the electrolyte as well as the quality/type of electrolyte.The AVR microcontroller is a leading low power microcontroller that has been around for almost a decade now. Recently, new lower power devices have been added to the AVR family, called the PicoPower AVR microcontrollers.
In this instructable, we show how even the regular AVR devices can be set up and programmed to run off a fruit battery.
Tiny AVR Microcontroller Runs on a Fruit Battery - Link.
Previous:
Lemon-Powered AVR Tiny - Link.
Posted by Phillip Torrone |
Apr 3, 2007 01:52 AM
DIY Projects, Electronics |
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| Comments (1)
April 2, 2007
GLOWiE L.E.D. Art Lights - (Commercial version of LED throwies?)
Wow, this is bizarro - a company is selling LED throwies for $24 as a tradmarked "GLOWiE". They used heat shrink on the thr(gl)owies - well, that's pretty smart.
Discuss in the comments!
GLOWiE L.E.D. Art LightsBattery operated accent lighting for parties, events or decoration. Let your imagination run wild.
Features
- 6 vibrant colors blue, green, red, white, orange and yellow (3 of each color in a pack of 18)
- Extremely bright LED technology
- Powerful magnetic base enables mounting to metal surfaces
- Can also be applied to any surface using
- double-sided tape (not included)
- Batteries included. Lasts for several hours
Instructions- Pull tab for illuminationGLOWiE StreetGlow, thanks noenemies! - Link.
Apply to any surface
How and where to properly dispose of lithium batteries in your area - Link.
Related:
From the pages of MAKE:
LED Throwies by Graffiti Research Lab in 123. MAKE 06 - page 116. Make and toss a bunch of these inexpensive little lights to add color to any ferromagnetic surface in your neighborhood. Subscribers--read this article now in your digital edition or get MAKE 06 @ the Maker store.
Posted by Phillip Torrone |
Apr 2, 2007 09:00 PM
DIY Projects, Electronics |
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| Comments (9)
Making a hand drawn PCB (printed circuit board)
Ohm writes -
For my latest electronics project I decided to make a resistor substitution box, instead of just using another perf-board I decided to make a pcb for it so I could document the process and make an instructable. I decided to do this because I have yet to see anyone do it on Instructables so I figured it would be a good thing to share. This process works well for simple circuits that do not have a lot of small parallel bus lines in them, I have done a few guitar stomp boxes this way as well.Making a Hand Drawn PCB - Link.
Related:
- Direct to PCB ink jet resist printing - Link.
- Open source PCB design tools - Link.
- Two sided PCB using toner method - Link.
- PCB Creation - Printed Circuit Boards for the Masses - Link.
- More PCB projects @ MAKE - Link.
From the pages of MAKE:
Step-by-step instructions for making your own PCBs at home. MAKE 02 - page 166. Subscribers--read this article now in your digital edition or get MAKE 02 @ the Maker store.
Posted by Phillip Torrone |
Apr 2, 2007 08:49 PM
DIY Projects, Electronics, Instructables |
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| Comments (0)
Fun with Xbee and Arduino
I've been editing Tom Igoe's upcoming book, Making Things Talk, and it's been a real blast. I'm building every project in the book, and my office is slowly getting taken over by wireless modules, sensors, and breadboards. In this example, I'm using the inexpensive ($19) Xbee modules to let two Arduinos talk to each other. Link to iPod-friendly video
Related:
- MaxStream XBee Module - Link
- XBee Breakout board from Spark Fun - Link
- Wireless Communication with XBee Radios - Link
- Cover photo candidates - Link
Posted by Brian Jepson |
Apr 2, 2007 04:20 PM
Electronics |
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| Comments (0)
LEGO miniPOV
MAKE Flickr photo pool member Potxoli made a miniPOV (spells words as you wave it around) - but instead of using just waving it around, why not have a robot do that for you! Link.
Related:
miniPOV @ the Maker store - Link.
Posted by Phillip Torrone |
Apr 2, 2007 02:43 PM
DIY Projects, Electronics |
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| Comments (0)
Diecimila (Ten thousand) - Happy 10,000th Arduino board sold!
This is a big deal, the open source hardware project for artists, engineers and tinkerers, Ardunio - just hit 10,000th sold! Massimo writes -
Diecimila in italian means "ten thousand" and this marks a moment I would never thought we would reach. Over ten thousand Arduino USB boards have been sold by our manufacturer. It's a great success and we have to thank all the users who have liked our work and supported us from the beginning.Arduino is an interesting experiment in the world of open source because we are making an open source software combined with a piece of hardware released under a Creative Commons license. The sales of the hardware have been used to manufacture more hardware and, while adding more and more features to the board, keeping the price more or less the same...
Well, thanks to all of you Arduino supporters, it's a great experience and we want to keep bringing out new ideas and products to make it easier and cheaper for you to work with electronics.
tinker.it » Blog Archive » Diecimila (Ten Thousand) - Link.
Related:
Posted by Phillip Torrone |
Apr 2, 2007 11:03 AM
DIY Projects, Electronics |
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| Comments (3)
AVR Blue Sky projects
Ullasmann has a ton of fantastic AVR projects, all zipped up and ready to build! (The AVR is a popular microcontroller from Atmel).
- US Telephone Tone Generator
- 8-Bit International Telephone Ringer
- Pyrameter
- Ammeter
- RGB SlideShow
- Temperature Recorder
- Precision Scales
- Input Multiplexor
- Bio Resonator
- Digital Ringer
- Internet Connection. zip
- Proportional Integral Derivitative Controller (PID)
- Debouncer using DSP routine
- Debouncer using A2D routine
- Digital Low PassFilter
- Led Light Detector
- Power Supply Unit (PSU)
- Maximum Power Point Tracker (MPPT)
- RGB Color Meter
- Color Sensor
Posted by Phillip Torrone |
Apr 2, 2007 08:39 AM
DIY Projects, Electronics |
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| Comments (1)
March 31, 2007
AVR controlled clock
Daqq made a really simple The AVR controlled clock, source and schematic included -
A friend of mine needed a clock into his amplifier as an extra function. So I made him one. It consists only of one AVR processor and one BQ-M512RD (or compatible, with common anodes) LED display.Daqqs homepage - [via] Link.
Related:
- Getting started with AVR microprocessors on the cheap - Link.
- Getting started with 8 bit AVR microcontrollers - Link.
- Open source Atmel AVR microcontroller kits... - Link.
- More AVR projects @ MAKE - Link.
Posted by Phillip Torrone |
Mar 31, 2007 04:27 PM
DIY Projects, Electronics |
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| Comments (0)
Lemon-Powered AVR Tiny
Dhananjay V. Gadre wrote in with this awesome project:
We have been itching to try running an AVR micro on fruit power. I do have the latest Picopower AVR samples, but it was too much of an effort to solder a 64 pin TQFP and so we decided to give a try with Tiny13V chip instead. The chip was setup to operate at an internal clock of 128KHz with a divide by 8 setting. A program to toggle an LED on pin 3 of the micro was set up with a series resistance of 4.7KOhm. The fruit cell was made out of a bare PCB partitioned in 4 sections. The copper of the PCB made up one electrode and for the other we used zinc strips from new batteries :) Two lemons cut in half were used.The setup works well and the LED light didnt seem to diminish at all.
Posted by Brian Jepson |
Mar 31, 2007 08:52 AM
Electronics |
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| Comments (0)
MintyBoost! Kit V1.1
Here's another one of our kits with instructions, up on Instructables -
This is an updated version of the detailed instructable by this device's inventor, Ladyada. The updated version has some extra components. Also if you're having trouble be sure to read the extra section in step 4 about modifying the MintyBoost to work with some newer MP3 players. (It's quite simple).
MintyBoost! Kit V1.1 - Link & get on @ the Maker store.
Posted by Phillip Torrone |
Mar 31, 2007 04:34 AM
DIY Projects, Electronics, Kits |
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| Comments (6)
March 30, 2007
DIY UFO - The GFS UAV Project, A coanda effect flying saucer
Check out Jean-Louis Naudin's DIY UFO - a coanda effect flying saucer you can make yourself!
The GFS-UAV, propelled by an electric engine, uses the Coanda effect to take off vertically, fly, hover and land vertically ( VTOL ). There is no big rotor like on an helicopter and the flight is very stable and safe for the surrounding. The design of the GFS-UAV N-01A is based on the Geoff Hatton' flying saucer from GFS Project limited.The GFS UAV Project, A coanda effect flying saucer tested by Jean-Louis Naudin, Thanks Jordan! - [via] Link & detailed shots.
Posted by Phillip Torrone |
Mar 30, 2007 09:00 AM
DIY Projects, Electronics |
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| Comments (3)
March 29, 2007
Game of Life kit (instructions)
Here's another one of our kits, now documented on Instructables. The Game of Life Boards are a scalable platform for cellular automata visualizations. Each board contains 16 LEDs in a 4x4 grid, a microcontroller, and a communications and power distribution network. With the available firmware, they execute Conway's Game of Life. Boards can act alone, or can be plugged into other boards to create a larger display. You can get this kit from the MAKE store.
Each kit comes standard with green LEDs, but any LEDs can be used by adjusting the values of the resistors. The board accepts 6 to 12V DC power, and each board draws a maximum of approximately 0.25 amps.
Game of Life Kit - Link & you can get the kit @ the Maker store.
Posted by Phillip Torrone |
Mar 29, 2007 10:10 PM
DIY Projects, Electronics, Instructables |
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| Comments (0)
Face-mounted lucid dreaming mask
Nate True makes these lucid dreaming kits (or you can just make your own) - he sent me out one and I'll strap it to my head to see what happens. The things I do for our fringe themed issue and posts this month...
cre.ations.net - Creation: Face-mounted Lucid Dreaming Mask - Link.
Posted by Phillip Torrone |
Mar 29, 2007 09:00 PM
DIY Projects, Electronics |
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| Comments (0)
AVR based USB SD card reader
Qibo made a nice AVR based USB SD card reader (doh, note - you need to register to view the projects on AVR Freaks) -
his project is for studying USB interface and MassStorage protocol. Perhaps, because I should not using AVR device which has no extended bus, or should not using SD card as the medium but others which has parallel interface. The speed of this work is quite slow, Read 370KB/s and Write 195KB/s. But this project is quite simple for studying USB.The function of this board is USB SD card reader. Since It adopt MassStorage protocol, It will be treated as a removable disk when plug in the computer, just like a flsh disk.
Using the attached code it will be shown as a hard disk, because I can use the function of the hard disk (eg, partition). Of course just change a character of the code it will be a removable disk.
:: AVR Freaks - USB SD Card Reader Link.
Posted by Phillip Torrone |
Mar 29, 2007 10:27 AM
DIY Projects, Electronics |
Permalink
| Comments (0)
Phone alarm dialer
Alan writes -
Just hook this Alarm Phone Dialer up to something you would like to monitor, for example, a high water alarm, low temperature alarm, back window, garage door, etc. When the system is activated it will call a number of programmed numbers to let you know the alarm has been activated. This would be great to get alerts of alarm conditions from your home when you are at work. The microcontroller code is provided on the site.The circuit uses a MT8880 DTMF dialer chip and a PIC 16F84A microcontroller.
elektronika : elektrophreak : projekti - [via] Link.
Posted by Phillip Torrone |
Mar 29, 2007 08:25 AM
DIY Projects, Electronics |
Permalink
| Comments (7)
HOW TO - Make a Telegraph that clacks out RSS Feeds
Jake sent in how to make a replica telegraph sounder that taps out rss feeds in morse code, outstanding work! - Link.
Posted by Phillip Torrone |
Mar 29, 2007 07:30 AM
DIY Projects, Electronics, Gadgets, Retro |
Permalink
| Comments (3)
March 28, 2007
luscious electric delight
Jeez, this is a really beautiful LED project, source and schematics included -
We set out to harness the power of the LED. As a single discrete element, the LED is a simple binary indicator. By grouping many LEDs together, like pixels, more and more information can be conveyed. The trick is to find the most efficient way of addressing the state of each LED.
leif krinkle: luscious electric delight - Link.
Posted by Phillip Torrone |
Mar 28, 2007 02:30 PM
DIY Projects, Electronics |
Permalink
| Comments (3)
Hard drive spring "speaker"
Brian writes -
Inspired by the wealth of hard-drive recycling ideas on hacked-gadgets and the >springverb research posted at Electronic Peasant. When looking at both these pages... this hack becomes pretty obvious. It helps that i had all the materials laying around already.
Hard drive spring "speaker" - [via] Link.
Posted by Phillip Torrone |
Mar 28, 2007 10:23 AM
DIY Projects, Electronics, Music |
Permalink
| Comments (0)
Capacitor Discharge in Action
Note: Some makers have commented that this particular project should not be attempted unless you know exactly what you are doing and have taken the right precautions.
bbum's found a cool way to get a photo with lots of sparks:
* Take a part a disposable camera, desolder the capacitor and rig up a charging circuit.
* Charge the capacitor
* Turn off the lights
* Set your digital camera on a 5 second exposure*
* Use a bit of metal to discharge capacitor at the focal point of the camera
* Upload photo to flickr
'Cause splosions are cool - Link
Posted by Brian Jepson |
Mar 28, 2007 06:32 AM
Electronics |
Permalink
| Comments (7)
AVR TV Video Podcast from Atmel
OK AVR fans and project makers, Atmel the makers of AVR have their own TV show, from Norway - post in the comments!
Posted by Brian Jepson |
Mar 28, 2007 06:24 AM
DIY Projects, Electronics |
Permalink
| Comments (1)
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