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Archive: Electronics
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October 26, 2006
Autorange capacitance meter
Here's how to make a DIY capacitance meter (it measures capacitors) E=MNC writes - "Finally, I managed to persuade myself to make a really powerful capacitance meter. This is an autoranged version, which means one does not need to adjust the range settings. Furthermore, the measuring range is quite large, from 5pF all the way to 2600uF. It is all taken care of by the PIC16F873A inside the circuit. It is based on a very simple circuit analysis principle of charging and discharging of capacitors in an RC circuit." [via] (source and schematics included)- Link.
Related:
Posted by Phillip Torrone |
Oct 26, 2006 04:58 AM
DIY Projects, Electronics |
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October 25, 2006
Light up talking Halloween pumpkin (it wants candy)
Max shows you how to make a talking and light up pumpkin for getting precious candy (Also entered in the MAKE & CRAFT contest, woo!)... [via] - Photos & how-to (site seems to be down for me)...
Related:
- Makers and Crafters, it's time to enter our ghoulishly fun Halloween contests! Anyone, anywhere can enter, and depending on what type of maker or crafter you are, you can enter all or just some of the contests - Link.
Posted by Phillip Torrone |
Oct 25, 2006 11:34 PM
DIY Projects, Electronics, Halloween, Holiday projects |
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re-MADE DVD player
Drew made a crummy DVD player and some found junk into an artsy new DVD player - "This is my new DVD tinker project . I found an old radio on the sidewalk and took it home with the intention of ripping it apart and putting something else back in it . I went to K-mart and picked up a brand new dvd player on sale, and brought that home also with the plan of ripping it to shreds. The radio box was just too small to fit everything inside and keep the original face, so I just put plexi glass on, stuck the reader on the top and stuffed it full of DVD guts. Took about 6 hours to complete." [via] - Link.
From the pages of MAKE:
- Born-Again Boomboxes - Up from the ghetto blaster, a new life as a functional-art stereo component. MAKE: Digital EditionSubscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Oct 25, 2006 09:02 PM
DIY Projects, Electronics, Made On Earth |
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HOW TO - Build a robotic Dalek Pumpkin
Oh my! MAKE FLickr photo pool member Oskay made robotic pumpkin Dalek - "We Evil Mad Scientists like Halloween. A lot. You might have already seen our old-school Cylon Jack-o-lantern. Here is another halloween electronics project, hopefully in time for you to make your own: It's a radio-controlled robotic Dalek that can move around and turn its head. Oh, and did I mention that it's a pumpkin?" [via] - Link.
Related:
Enter the MAKE & CRAFT Contests!
- Makers and Crafters, it's time to enter our ghoulishly fun Halloween contests! Anyone, anywhere can enter, and depending on what type of maker or crafter you are, you can enter all or just some of the contests - Link.
Posted by Phillip Torrone |
Oct 25, 2006 02:45 PM
DIY Projects, Electronics, Halloween, Holiday projects |
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DIY Spooky sound generator
Our pals as Design News have a new "Gadget Freak" how-to for Halloween, DIY spooky sound generator! - "Give the little witches and warlocks a real trick when they come clamoring for treats on Halloween with this doorbell-activated soundtrack. All that's required to build this spooky sound generator is a moderate hack of a cassette player, which involves opening the case and rewiring the motor for remote control, and rewiring of your doorbell circuit. Add a simple, roof-mounted speaker, and you'll have the little darlings scattering in every direction at the first blood-curdling scream." - Link.
Related:
- Makers and Crafters, it's time to enter our ghoulishly fun Halloween contests! Anyone, anywhere can enter, and depending on what type of maker or crafter you are, you can enter all or just some of the contests - Link.
Posted by Phillip Torrone |
Oct 25, 2006 11:08 AM
DIY Projects, Electronics, Halloween, Holiday projects |
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$20 Halloween prop
Robbybuilder has a cheap and clever $20 Halloween prop made from wood and an old fan motor - "This is "Wilfred"...He is a full sized animatronic greeter for my haunt. He is made entirely from ordinary objects anyone can obtain, and is made for just under $20!! (Barely)." [via] - Link.
Related:
- Makers and Crafters, it's time to enter our ghoulishly fun Halloween contests! Anyone, anywhere can enter, and depending on what type of maker or crafter you are, you can enter all or just some of the contests - Link.
Posted by Phillip Torrone |
Oct 25, 2006 09:56 AM
DIY Projects, Electronics, Halloween, Holiday projects |
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| Comments (1)
HOW TO - Sew Smart DIY LED shirts
Our pal Diana Ng has a fun how-to over on Gizmodo on how to make your own LED enabled shirts... - "Diana Ng of Project Runway fame is a geek's fashion designer. Today, she's teaching us how to sew LEDs into your clothing. We're all familiar with the LED belt buckle and the Motorola/Burton jacket, but now we're grabbing fashion by the threads and showing you how to make your own tech-inspired clothing..." - Link.
Related:
- Geek Girl Takes on Fashion - Link.
- Diana Eng on Project Runway - Link.
- MAKE Fashion Show featuring Diana Eng and Emily Albinski - Link.
- MAKE Fashion Technology Show Photos - Link.
- CRAFT 01 - The Electric Tank Top - Use silver-coated thread and a microprocessor to make programmable LED clothing - Link.
Posted by Phillip Torrone |
Oct 25, 2006 08:44 AM
Crafts, DIY Projects, Electronics |
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Browse the web on a ZipIt
Wow! Karosium got Pixil (syncable PDA linux operating system) running on a ZipIt and browsed the web with it (ViewML), it's just a start, but a great one! [via] - Link. We reviewed the ZipIts in MAKE 07.
Related Zipits!:
Posted by Phillip Torrone |
Oct 25, 2006 12:45 AM
DIY Projects, Electronics, Online |
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October 24, 2006
HOW TO - Make a RoboSheep
2 Robots has a fun how-to on making an anamatronic sheep using a Basic Stamp, Robot Two writes - "Last week, I ordered a Basic Stamp from Parallax -- a most excellent beginner's microcontroller. A microcontroller is a very cool thing -- it's like an entire computer on a single chip. You can plug each pin in to a servo or button or any other input or output, and get it to interact with its environment. The only drawback is that the microcontroller is slow, and only has a little RAM. The one I got has only 8 bytes! Of course, it only costs $15... I definitely recommend this board for anyone getting started in robotics or micro controllers. Anyway, I built my robot into a stuffed sheep my wife had. I used Parallax's PIR sensors for the eyes. These are infrared motion sensors. I figured that if it senses motion only in the right one, it should turn the head right. If it senses motion only in the left one, it should turn left." [via] - Link.
Related:
- Arduino, the Basic Stamp killer? - Link.
- Basic Stamp - Link.
- Basicstamp work setup - Link.
- HOW TO - Build a PC troubleshooter with the Basic Stamp - Link.
From the pages of MAKE:
- Lots and lots of Basic stamp projects and kits - Link.
Posted by Phillip Torrone |
Oct 24, 2006 10:22 PM
DIY Projects, Electronics |
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| Comments (1)
Pollock bot - The scribble bot
MAKE Flickr photo pool member Bowdie made this cute scribble bot - Link & how-to make your own.
Also, check out Jonah Brucker-Cohen's - Drawbots (they're awesome!) - Link.
Related:
- HOW TO - Make a Kid's "Draw Bot" - Link.
- Drawbot Draws! - Link.
- Drawbot in Action! - Link.
- Make Podcast: Weekend Projects - Making A Drawbot - Link.
From the pages of MAKE:
- Scribbler Bot - Homemade two-axis plotter finds work as a cariacature artist. MAKE 07 - Page 147. MAKE: Digital Edition Subscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Oct 24, 2006 08:01 PM
DIY Projects, Electronics, Robotics |
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Picoo Z Mini helicopter mod
MAKE Instructable group member Fireballxl5 writes - "This is a set of detailed instructions for a mod to the rotor shaft of the Picoo-Z mini-helicopter; replacing the original steel shaft with a carbon fiber shaft and installing ball bearings in place of the copper/brass bearing..." - Link.
Related:
- PiccoZ mods (hop-ups) and more - Link.
Posted by Phillip Torrone |
Oct 24, 2006 05:37 PM
DIY Projects, Electronics |
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| Comments (1)
HOW TO - Make a "Roller-Bot" a robot made from a paint roller!
Check out these simple little "bots" you can make using a paint roller a some fairly easy to obtain/assemble parts, great project for kids (and adults)... Paul writes - "The Roller-Bot I is a small dumb light activated robot built on a paint roller and can be activated by a flashlight. It is part of my personal interest in "minimal engineering" and the notion of inspiring young minds by the application or unusual or unorodox materials in an exhibition type design. Roller-Bot I itself, unuder normal operation, is activated by an ordinary flashlight and will move in 10-foot diameter circle." [via] - Link.
Related:
- More DIY robotics @ MAKE - Link.
Posted by Phillip Torrone |
Oct 24, 2006 12:30 PM
DIY Projects, Electronics, Robotics |
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| Comments (0)
HOW TO - Crystal controlled 1 pulse per second clock
The latest Citizen Science has a how-to on making a pulse circuit from a clock, the completed circuit provides pulses with a duration of about 30 milliseconds... Allan writes - " This easy to make circuit will provide pulses at a highly accurate rate of one per second (1 Hz). The circuit is based on a common quartz clock movement that seems to be in most of today's wall clocks. A suitable movement can be salvaged from a clock or purchased new from a hobby shop. " - Link.
Related:
Posted by Phillip Torrone |
Oct 24, 2006 10:29 AM
DIY Projects, Electronics |
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| Comments (2)
October 23, 2006
Altoids switchbox
MAKE Flickr photo pool member Tsangal made a nifty switchbox with volume knob and jammed it in an Altoids (the project box of choice for Makers). The title of the project is passive pre-amp, but I'm not sure where the amping is being amped - Link.
Related:
- Altoids and tin cases Archives - Link.
From the pages of MAKE:
- Mint-Tin Amp - Pocket amplifier punches up headphones, this one I know exactly where it's ampin'. MAKE 04 - Page 131. Subscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Oct 23, 2006 11:37 PM
Altoids and tin cases, DIY Projects, Electronics, Music |
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| Comments (4)
Fun with RFID aka Researchers see privacy pitfalls in no-swipe credit cards
Jonathan Schwartz @ News.com has an article that will be making the rounds quite a bit regarding unencrypted information on some of the new credit cards. I fully expect our Makers to make a text to speech version that screams out names as people walk by -
"They call it the "Johnny Carson attack," for his comic pose as a psychic divining the contents of an envelope. Tom Heydt-Benjamin tapped an envelope against a black plastic box connected to his computer. Within moments, the screen showed a garbled string of characters that included this: fu/kevine, along with some numbers. Heydt-Benjamin then ripped open the envelope. Inside was a credit card, fresh from the issuing bank. The card bore the name of Kevin E. Fu, a computer science professor at the University of Massachusetts, Amherst, who was standing nearby. The card number and expiration date matched those numbers on the screen. " Thanks Sdwarf! - Link.
More:
- No-Swipe Credit Card No Problem For Thieves - Link.
- Researchers See Privacy Pitfalls in No-Swipe Credit Cards" - Link.
- Vulnerabilities in First-Generation RFID-enabled Credit Cards - Link.
- RFID Payment Card Vulnerabilities Technical Report - Link.
RFID projects, readers, hacks and more:
- DEFCON RFID World record attempt... - Link.
- Interview with RFID implanter - Link.
- RFID Robot - Link.
- RFID door - Link.
- RFID enabled flame shooting trampoline - Link.
- MAKE VIDEO PODCAST - Getting "Chipped" - Link.
- HOW TO - Homemade RFID reader - Link.
- HOW TO - Make a RFID zapper - Link.
- DIY RFID-Zapper... - Link.
From the pages of MAKE:
- RFID for Makers - Build this kit to read radio frequency ID tags. MAKE 06 - Page 162. Subscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Oct 23, 2006 09:27 PM
DIY Projects, Electronics, Wireless |
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| Comments (2)
Spooky Arduinon Projects #3 - DIY Ambient orb
Todbot writes - "The notes for the third class are up on the Spooky Arduino class page. Also are links to many of the Arduino code sketches used in the class. Here's a 10-minute project that's a glowing orb thing similar to the Ambient Orb (but much larger!) using the techniques from this week's class." - Link.
Related:
- Spooky Projects - Introduction to Microcontrollers with Aurdino - Link.
- Arduino, the Basic Stamp killer? - Link.
From the pages of MAKE:
- Arduino Fever - The 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. MAKE 07 - Page 58. Subscribers--read this article now in your digital edition!
Posted by Phillip Torrone |
Oct 23, 2006 08:49 PM
DIY Projects, Electronics, Halloween |
Permalink
| Comments (8)
The Jack-o-LED
Here's another 555 timer project for a pumpkin! Matthew writes - "I decided to use a little nerdery to make up for my lack of artistic talent. After scooping out the guts and carving an old school, evil-eyed, jagged-toothed, jack-o-lantern, I decided to do something a little different to light it. I came up with this simple circuit using a LM555 timer to blink LEDs on and off..." [via] - Link.
Related:
Posted by Phillip Torrone |
Oct 23, 2006 05:44 PM
DIY Projects, Electronics, Halloween, Holiday projects |
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| Comments (0)
Solar Walkman - WM-F107
In the 1987 Sony introduced a solar Walkman, you can get solar panels to recharge the new Walkmans (also known as iPods) - but this might be one of the few with a solar cell built in... - "The famous "Solar Walkman" was indeed a technological marvel. Not only was this model solar powered, it was also exceptionally compact and fully featured, including auto reverse, metal tape compatibility, Dolby B NR, AM/FM stereo radio and a waterproof "sports" case. Text copyright © Walkman Central. Unauthorised reproduction prohibited.
Sony had made a solar battery charger for their "AA" sized nickel cadmium batteries some years before, but the WM-F107 took the concept a stage further. The amount of power required to run a quality cassette player is not... The WM-F107 was quite expensive and only sold in limited numbers. Having produced it, Sony did not see fit to repeat the exercise, and there has not been a solar powered Walkman since..." - Link.
You can find them on eBay once and awhile, usually for $100, but they're really rare. Walkman central (not affiliated with SONY) has tons and tons of other old school Walkmans too, great site.
Related:
- Solar charging iPods and PSPs... - Link.
- Solar dress - Link.
- Solar Powered Jack-O-Lantern - Link.
- HOW TO - Make a cheap & easy solar powered robot - Link.
- Make a solar cell in your kitchen - Link.
- Building a solar generator - Link.
- HOW TO - Make a homemade solar water heater - Link.
Posted by Phillip Torrone |
Oct 23, 2006 11:23 AM
Electronics, Retro |
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| Comments (0)
Carl & Jerry - Adventure in electronics, River Sniffer
In the 50's and 60's John T. Frye, W9EGV / Popular Electronics published a series of fiction stories called "The Carl and Jerry stories" - In each story the pair acquired new skills, got their ham radio licenses and used their knowledge of electronics to get out of a jam or solve a mystery - there isn't a complete collection of all the stories that I know of, but there are some scans / text online (if you have more please let me know)...
In this installment, Carl & Jerry help Bill Herber, the game warden make a "River Sniffer" to figure out who has been dumping toxic chemicals in the river and killing the fish.
"Two large bass were threshing about on the surface, obviously in their dying throes. Even as the boys watched, the splendid fish turned belly-up and floated quietly downstream; and, looking more closely, Carl and Jerry saw that the two were accompanied by other dead and dying fish of various sizes.
The throbbing of an outboard motor was heard downriver, and an aluminum boat carrying a young man dressed in a game warden's uniform came in sight around a bend in the stream. When he saw the boys, he ran the bow of the boat up on the bank, cut the motor, and stepped out.
"That's a mighty sorry sight," he remarked, motioning toward the floating fish. "I'd certainly like to catch whoever keeps dumping that fish-killing stuff into the river."
"You mean it has happened before?" Carl queried.
...look at those fish on top of the water!
"About once a week all spring, but not always on the same day or night. When someone calls in and reports dead fish, I get right on it; but I never know how far the fish float after dying. However, this is the farthest upstream I've found them, and some of those fish are still wiggling. This time, at least, the stuff must have entered the river from this bank and not too far upstream; but I've covered every foot of the river for five miles in either direction without finding a single likely source of pollution. If only I had some way of knowing just as soon as the stuff hit the river -even before the fish began to die--I'd stand a chance of tracing it. At least I could collect a strong enough sample for accurate analysis before the polluting substance was too greatly diluted."
You mean you need some kind of a robot to sample the river water continuously and give some sort of alarm when an unusual amount of destructive chemical floats past it ?"
"Exactly, but I guess there's no such gadget."
"Don't make book on it. I have an idea: if you'll take that glass jug lying in the weeds across to the other side of the river and fill it, my friend here and I will try to build such a robot for you. Electronics is our field. I can't promise anything, but you can give us your telephone number and we'll call you if we come up with something.""
Read the exciting build and conclusion! Popular Electronics JULY 1962, River Sniffer - Link.
Related:
Posted by Phillip Torrone |
Oct 23, 2006 10:21 AM
Electronics, Retro |
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Eprom Programmer - Batronix
Here's a good Eprom programmer, good for folks who hack up pinball machines and need to program their chips, $80 or cheaper around the web/eBay... - "The Batronix Eprom Programmer has been developed for amateur constructors as well as small companies that need a programming device for a very affordable price but don't want to give up on functions or support of common memory chips." - Link & supported chips.
Posted by Phillip Torrone |
Oct 23, 2006 07:11 AM
DIY Projects, Electronics, Kits |
Permalink
| Comments (1)
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