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Archive: Electronics
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August 18, 2006
Arduino Fever - PDF preview MAKE 07
Arduino Fever - In MAKE 07 we have a tale of a cute, blue microcontroller that fits nicely in the palm of your hand, and the expanding community of developers who love and support it - here's a PDF to check out - Link & get MAKE videos and PDFs delivered automatically with iTunes/RSS reader that does enclosures - click here.
More:
- Arduino - Link.
- HOW TO - Arduino breadboard shield - $10 & 10 mins - Link.
- Arduino Fever, MAKE 07 - Link & MAKEZine reader discount link.
Posted by Phillip Torrone |
Aug 18, 2006 05:50 PM
Electronics, MAKE Podcast |
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DIY Alarm system in 3 minutes
Max writes - "Here's a DIY on how to make an alarm system in 3 minutes. We will use a loud buzzer and some magnetic switchs from Radio Shack to create a simple yet effective alarm system. We will throw in a LCD, keypad so we can alarm the alarm system using a 4-digit code and be able to see the system status using the LCD." - Link.
Related:
HOW TO - Build an ultrasonic burglar alarm - Link.
Posted by Phillip Torrone |
Aug 18, 2006 01:48 PM
DIY Projects, Electronics |
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| Comments (1)
HOW TO - Make a sound level indicator
Here's how to build a pretty neat looking sound meter, I just bought some ear projection that is rated for 30db, so this might be fun to test if they really work with a visual indicator... [via] - Link.
More:
MAKE electronics archives - Link.
Posted by Phillip Torrone |
Aug 18, 2006 11:50 AM
DIY Projects, Electronics |
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Improved solar charged
Here's an improved Atmel ATtiny13V solar charger, source and schematic included, Dick writes - "Batwatch is a simple monitor for a solar panel battery charger, using an Atmel ATtiny13V. It periodically measures the charge current and battery voltage, and shows them by blinking two LEDs. I built this circuit into the plug of a VW solar charger panel that is used to prevent a discharge of the battery when a car is not used for some time. A modern car contains a large amount of electronics, and a quiescent current of 40-50mA (about 1Ah per day!) is considered "normal".
Because I wanted to keep an eye on the battery condition and charge current without opening the car, I devised a circuit that shows the voltage and current visually, by blinking a red and green LED. The charge current is determined by measuring the voltage drop over a 10 ohm series resistor. Two A/D inputs are used to measure the voltage before and after the resistor, which is the battery voltage." [via] - Link.
More:
- Atmel AVR projects - Link.
- Open source Atmel AVR microcontroller kits... - Link.
- Build a $19 AVR Butterfly MP3 player - Link
Posted by Phillip Torrone |
Aug 18, 2006 09:47 AM
DIY Projects, Electronics, Transportation |
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HOW TO - Build a computer controlled radio transmitter
Simon @ Scitoys shows you how to build a computer controlled wireless transmitter - "How would you like to send text messages to your friends without wires, and without an Internet connection, and without paying monthly fees? In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card. " - Link.
Related:
- Video: Morse coders beating SMSers - Link.
- DIY Morse code Palm keyboard interface board - Link.
- Make Morse Code Music - Link.
- Simple Working Telegraph System - Link.
- -- --- .-. ... . -... . .- - ... ... -- ... - Link.
Posted by Phillip Torrone |
Aug 18, 2006 06:24 AM
DIY Projects, Electronics, Wireless |
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| Comments (2)
Inside the "spy video" car
The gang over at Hacked Gadgets took apart a "spy video" car, if you need parts or want to base a project off a (somewhat) cheap set of components like RC control, video transmitter + video goggle, this might be the way to go. Plus you know in a few months this will be on clearance for 50% off somewhere... - [via] - Link.
More:
Spy Video Car - Link.
Posted by Phillip Torrone |
Aug 18, 2006 04:52 AM
DIY Projects, Electronics |
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| Comments (5)
HOW TO - Build an ASCII keyboard and encoder
Finally, at last! You can build a low-cost, fully professional ASCII keyboard and encoder "Popular Electronics April 1974" - Link - but wait, there's more, this keyboard showed up on the Apple 1 Computer - Link.
Posted by Phillip Torrone |
Aug 18, 2006 03:06 AM
Computers, DIY Projects, Electronics, Retro |
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| Comments (1)
Build a RFID reader/capturer/cloner
A MAKE reader writes in with a DIY RFID reader/cloner - "A public release of code & schematics for Jonathan Westhues' Proxmark 3 RFID test device is now available. The device allows you to read, capture, and replay/clone transmissions from an RFID tag." - Link & video of the device in action - Link.
Related:
- HOW TO - Homemade RFID reader - Link.
- Build Your Own RFID Reader - Link.
- Interview with RFID implanter - Link.
- RFID Keyboard, safe - RFIDToys - Link
- RFID enabled flame shooting trampoline - Link.
- HOW TO: Create RFID Access for Your Front door - Link.
- HOW TO - Super-slim, cool-lookin, EMI-shielding wallet - Link.
- HOW TO - Make a RFID-Zapper - Link.
- RFID for Makers by Joe Grand in Theory & Practice. Build this kit to read radio frequency ID tags. MAKE 06 - Page 160 (log in).
Posted by Phillip Torrone |
Aug 18, 2006 02:11 AM
DIY Projects, Electronics, Wireless |
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| Comments (3)
August 17, 2006
HOW TO - Build a 4 x AA USB battery pack
Here's how to make a 4 x AA USB battery pack for an external USB hard drive, Sitnalta writes - "Not long ago, I upgraded the hard drive in my laptop from an 80GB 4200RPM to a 120GB 5200RPM. Not wanting to let my old 2.5" drive go to waste, I bought a rather nice USB enclosure for it. Ah, but there was a catch. USB ports can only supply a maximum of 500 milliamps. The hard drive will need 550mA, meaning that the use of an AC adapter (or special USB cable) would be necessary under high load conditions...The way this HD enclosure "solves" the power problem is to include a special USB Y-cable that can draw power from two ports. So one port handles power+data while the other just supplies power. This means that sometimes I'd have to give up two ports for one HD (or use an after-market AC adapter.) Not cool...But I'm not here to complain. I'm here to awesome this problem out of existence. And we do that with some bits from Radio Shack, and, of course, a tin of Altoids." - Link.
Related:
Posted by Phillip Torrone |
Aug 17, 2006 10:40 PM
Computers, DIY Projects, Electronics, Instructables |
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| Comments (2)
Laptop, before & after
Mqtthiqs writes - "I found a couple of those *really* old laptops at garage sales. They are 100% functionning, and the screen of this one is a wonderfully old school blue-white one. I *had* to do something with it... If you remove the whole plastic case, keeping only what really useful is (screen, motherboard and power supply), and if you glue the whole thing between two boards of acrylic, you have a wonderful display monitor that you can hang on the wall, to have the weather or some news in your kitchen...I just finished the hardware part, now i have to make the wifi work (it's a standard PCMCIA card), write the program that displays the informations... " - Link.
Related:
A bijillion laptop photo frame projects - Link.
Posted by Phillip Torrone |
Aug 17, 2006 08:09 PM
Computers, DIY Projects, Electronics |
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| Comments (0)
HOW TO - Make a TRAXMOD - SD card MOD player
Here's a DIY MOD player you can build (MOD is sorta like a MP3, popular in the 80's with Amiga computers) - "TRAXMOD is a small digital audio player using the Philips LPC2103 ARM7TDMI-S high speed microcontroller chip (prior versions were based on Microchip dsPIC DSPs). Currently, the ARM port can play raw wave audio streaming off of a FAT formatted MMC/SD Card at 44100Hz, 10-bits, stereo. It is also beginning to play small 4 channel MOD files. The hardware for TRAXMOD/ARM can be built using a BBMICRO Protoboard and a few additional low cost components. " - Link.
More:
Posted by Phillip Torrone |
Aug 17, 2006 02:36 PM
DIY Projects, Electronics, Music |
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| Comments (1)
Microbric's Viper robotics development kit (review)
William writes - "I did a review of Microbric's Viper Robotics Development kit. It's a very inexpensive kit for what you get - a Basic Atom motherboard, two high quality gear motors, various sensors and building blocks" - Link.
Related:
Posted by Phillip Torrone |
Aug 17, 2006 11:37 AM
DIY Projects, Electronics, Kits, Robotics |
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| Comments (0)
HOW TO - Build a public broadcast "cart"
Victor writes - "Public Broadcast Cart is a shopping cart outfitted with a dynamic microphone, a mixer, an amplifier, six speakers, a miniFM transmitter and a laptop with a wireless card. The audio captured by the microphone on the cart is fed through the mixer to three different broadcast sources." - Link.
More:
Build your own radio cart (Schematic & parts list) - Link.
Other shopping cart projects:
- Shopping cart chair - Link.
- Build a CartBike - Link.
- MAKE AUDIOZINE - The ShopperChopper - Link.
- Shopping Cart Chair - Turn a shopping cart into a comfortable and stylish wheelchair. MAKE 07.
- Made on Earth - Reports from the world of backyard technology, including a shopping cart go-kart. MAKE 03 - Page 16 (log in).
Posted by Phillip Torrone |
Aug 17, 2006 10:53 AM
Arts, DIY Projects, Electronics, Made On Earth |
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| Comments (4)
DIY Pedal powered television plans
These DIY Pedal powered television plans cost $50 and you get 30 day email support, so might be worth it if you're looking to build one - "The Pedal Powered Prime Mover (PPPM) can be assembled with standard hand tools (drill, hacksaw, wrench, pliers, screwdriver, etc.). There is no welding, brazing or machine-shop work required. The PPPM can be used to power virtually anything that spins or rotates, as long as the effort required is within the capabilities of the rider..The approximate cost for parts to construct the PPPM, based on full retail prices at hardware and bicycle stores in Northern California, is US $230.00" [via] - Link.
If any Makers out there built one of these, let us know.
Update: David, the Maker of the plans wrote in... Checkout this news article - Link. - Which is about the Australian guy who is doing this! - Link. And he's using MY PPPM down there!
Posted by Phillip Torrone |
Aug 17, 2006 08:54 AM
DIY Projects, Electronics |
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| Comments (1)
Altoids headphone amp
Want to really crank up your music? Make a DIY headphone amp... and of course, put it in a mint/candy/sour-tin... Thanks Macaba! - Link.
Related:
- Tons of mint tin projects - Link.
- Mint tin project archives - Link.
- Mint-Tin Amp - Pocket amplifier punches up headphones. MAKE 04 - Page 131.
Posted by Phillip Torrone |
Aug 17, 2006 04:19 AM
Altoids and tin cases, DIY Projects, Electronics, Music |
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| Comments (2)
Bike stereo round up
When I see an adult on a bicycle, I do not despair for the future of the human race ~H.G. Wells... What's better than riding a bicycle around? Roll'in with a homemade bike stereo blasting out the tunes... there are some DIY ones and a few you can buy - here we go...
Thump:
- Ultra-light/ultra-efficient pimped-out bike stereo system - Link.
- DIY Bike stereo - Link.
- i-Ride Bicycle stereo system - Link.
- Fitting a stereo or car Radio to your bicycle (pre-MP3 player days!)- Link.
- Bike tunes 40 watt amplifier - Link.
- Lots of other bicycle projects - Link.
Posted by Phillip Torrone |
Aug 17, 2006 03:29 AM
Bicycles, DIY Projects, Electronics, Transportation |
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| Comments (0)
Programming PIC microcontrollers in BASIC
MAKE reader Russtang just picked up one of these Microchip PIC development tools with a USB 2.0 programmer on board, he writes "They have their own version of basic for $149 ($99 with purchase of their board). They have C and pascal compilers. They also have a good (FREE) "Programming Basic for Microcontrollers" tutorial here -
"Learn how to write your own program, debug it, and use it to start the microcontroller. We have provided plenty of practical examples with necessary connection schemes: temperature sensors, AD and DA converters, LCD and LED displays, relays, communications, and the book is constantly being updated with fresh examples. All code is commented in details to make it easier for beginners. Instruction set, operators, control structures, and other elements of BASIC are thoroughly explained with many examples. Also, the book includes a useful appendix on mikroBasic development environment: how to install it and how to use it to its full potential." - Link.
Previous:
PIC microcontrollers - a beginner's guide - Link.
Posted by Phillip Torrone |
Aug 17, 2006 12:10 AM
DIY Projects, Electronics |
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| Comments (6)
August 16, 2006
Send a SMS message to a cell phone using a GPRS modem
Max is busy lately, his latest - he shows how to send a SMS message to a cell phone using a Bluetree GPRS modem (first time I've seen a project with one). It's a pretty interesting project, you could make all sorts of sensors / things with triggers that send off a SMS... Link.
Posted by Phillip Torrone |
Aug 16, 2006 11:48 PM
Cellphones, DIY Projects, Electronics, Telecommunications |
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| Comments (1)
CVS Video camera handlebar mount
MAKE Flickr photo pool member DuganJ mounted a CVS digital video camera to his bike, if you're thinking of hacking up a camera for reuse and mounting it to a bicycle, this is worth a looksie - Link.
Related:
- CVS camcorder usably hacked! - Link.
- HOW TO CVS Video Camera Hacking for PC & Macs. - Link.
- CVS camera in a rocket... - Link.
- $35 Night vision scope, from a CVS camcorder - Link.
- CVS camera hack with USB cable... - Link.
- Make Podcast: John Maushammer's CVS Rocketcam - Link.
- Rocket-Launched Camcorder - Hack a $30, single-use camcorder to make it reusable, then launch it up in a model rocket and capture thrilling astronaut's view footage of high-speed neighborhood escape and re-entry. MAKE 07 - Page 78.
Posted by Phillip Torrone |
Aug 16, 2006 07:06 PM
DIY Projects, Electronics, Imaging, Transportation |
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| Comments (0)
HOW TO - Make a Theremin
In 1919 Leon Theremin made an interesting instrument called the Theremin, it works a bit like a metal detector, and was the first musical instrument designed to be played without using your hands - here's how to make one from "Popular Electronics November 1967" - Link.
Related:
Posted by Phillip Torrone |
Aug 16, 2006 03:54 AM
DIY Projects, Electronics |
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| Comments (5)
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