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Archive: Electronics
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May 2, 2007
Spark Fun Electronics - new stuff
Spark Fun has some new goodies in, the USB weather board looks fun...
Spark Fun Electronics - Link.USB Weather Board We take the sensitive SCP1000 barometric pressure sensor, match it with a sensitive SHT15 humidity sensor, and we give you weather over USB! Ok, so it doesn't really predict the weather, but you can immediately tell what the current pressure, humidity, and temperature is. Graphed over time you can watch weather fronts move in and the rain come down. There is a footprint and switch for 'RF'. This unit can be powered from our large solar cell and data can be transmitted via our BlueSMiRF wireless modem! All you need now is a greenhouse to monitor.
Compass Module with Tilt Compensation
This is a highly sensitive compass with on board accelerometer. What do you get? A compass that isn't affected by tilt! Perfect for your next submarine.
ARM-JTAG
New ARM-JTAG from KrisTech. This powerful debugger works with the OpenOCD project!
Posted by Phillip Torrone |
May 2, 2007 02:00 AM
DIY Projects, Electronics |
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| Comments (1)
May 1, 2007
DIY Zoning: Dampers
Wow, this is a great (and cheap way) to control the dampers in your home...
Compare: in existing zoning systems, the cost per room is anywhere between $600 and $1300, in this case, it is approximately $10 for a servo, and approximately $3 for a sensor, which makes it less than $20, if you count the price for all those small things in there.Impressive, isn't it?
Initially, there were concerns about the longevity of this device - all in all, neither of the original components (the stock registers and the stock R/C servos) were intended to be used in "always on" mode...
DIY Zoning: Dampers - [via] Link.
Posted by Phillip Torrone |
May 1, 2007 08:00 PM
DIY Projects, Electronics |
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LEGO Johnny Five
Daniele Benedettelli made an amazing LEGO Johnny Five, Steve Gutenberg not included...
The triangular structure of the treads has been built after precise studies of real Johnny five photos: a pre-production CAD drawing helped this process. An early version of J5 base had the most perfect proportions achievable with Lego gears, using Technic large turntables: unfortunately, those turntables made links escape while treads were turning.Lego Johnny Five - [via] Link.So, in the actual version, turntables has been replaced by 40z gears, that don't damage design too much and allow a very smooth motion.
More:
Posted by Phillip Torrone |
May 1, 2007 08:00 AM
Electronics, LEGO |
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| Comments (3)
April 30, 2007
AVR servo control
Here's a quick and simple way to control servos with an AVR microcontroller, stiant04 writes -
This code is developed for the ATmega16 on tha AVR-stk500 trainer and can only control two servos with a ten step resolution (but this can all easily be changed). It is ment to show newbies (like me) how they can make a C program that controls RC servos...:: AVR Freaks - Link.(Remeber that RC servoes needs a 1-2 millisecond high pulse at 50Hz)
PORTA=switches , 0=S1++,1=S1center,2=S1-- , 3=S2++,4=S2center,5=S2--
PORTB=Leds ,shows ten times the ms value(1-2ms -> 10-20 bin) for servo1
PORTC=Servo signal , PC0 & PC1Just push a button to move your servos.
The servo vil return to center position when max or min value is reached.(sorry that most comments are in norwegian)
Enjoy!
Related:
- WebCam servo control - Link.
- HOW TO - 16 Channel serial servo controller for ... - Link.
- HOW TO - Make a Servo pod - Link.
- HOW TO - Make a servo-based 4-legged walker - Link.
- OpenServo Wiki - low-cost digital servo for robotics - Link.
- Servo robot cat - Link.
Posted by Phillip Torrone |
Apr 30, 2007 10:00 PM
DIY Projects, Electronics, Robotics |
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| Comments (0)
Super NES RCA video mod
Sashi writes -
Well, I was sick of having to dig behind my TV to exchange the cable from my Nintendo 64 to play my SNES. So I figured why not install two RCA jacks so I can plug it directly into the front of my TV.Sashi's Architecture - [via] Link.
Related:
- SNES/NES controller to gamecube/Wii conversion project - Link.
- Playing 2 SNES games at the same time - Link.
- HOW TO - SNES to Parallel Port - Link.
- SNES/NES gamepad to USB adapter - Link.
- SNES mouse on a PC - Link.
Posted by Phillip Torrone |
Apr 30, 2007 02:00 PM
DIY Projects, Electronics, Gaming, Retro |
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| Comments (0)
HOW TO - Make a paper resistor
Here's an easy way to make a variable resistor from paper and pencil - Link.
Posted by Phillip Torrone |
Apr 30, 2007 10:00 AM
DIY Projects, Electronics |
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| Comments (0)
AVR based RPM meter for cars
Here's a cool AVR based RPM meter for cars, Bitman writes -
I got an idea of making a digital RPM-meter for my car. First I made a filter and used to test my code with a dev-board.Pulse comes straight for cars rpm-meter.
CAR: Honda Civic 1988 Dual Carburetor
MCU: Mega32The layout is a bit messy, but I think the pcb will tell the rest.
The filters main part is 7414 cause it has a Schmitt Trigger to make almost any kind of pulse to square wave.
Code uses interrupt to count the rising edges of the pulse in a time unit, which is around one second.
:: AVR Freaks - Link.
Posted by Phillip Torrone |
Apr 30, 2007 08:00 AM
DIY Projects, Electronics |
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| Comments (3)
LED blow light
This wind powered LED blow light is really cute, I'm going to make one just like it, and it shall be called LED blowies - [via] Link.
Posted by Phillip Torrone |
Apr 30, 2007 06:00 AM
Electronics |
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| Comments (9)
April 27, 2007
Carl & Jerry: Adventures in Electronics - "Abetting or Not"
Jeff sent in the latest PDF story from Carl & Jerry: Their Complete Adventures called "Abetting or Not" first published in October 1956 by Popular Electronics, he writes -
It's one of my personal favorites for a couple of reasons. The boys were playing with (roughly) the same frequencies in 1956 that we now use for Wi-Fi--and the old farmer knows a little more about cars than people might think.
Download the PDF here - Link.
More:
Get the book here (Jeff is experimenting with putting out free chapters, so support his efforts! - Carl & Jerry: Their Complete Adventures, Volume 1 by John T. Frye - Link.
Posted by Phillip Torrone |
Apr 27, 2007 02:00 PM
Electronics, MAKE Podcast, Retro |
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Robots for the rest of us - open source robots?
Interesting story on CNET about these open robots, the best part is the documentation on TeRK site, it's outstanding -
Carnegie Mellon University unveiled a new project Thursday designed to help people make robots from parts found at the local hardware store.
The Telepresence Robot Kit, dubbed Terk, was developed by Illah Nourbakhsh, an associate professor of robotics, and his team at the Community Robotics, Education and Technology Empowerment Lab at CMU. The project got financial help from Google, Microsoft and Intel."Everything is open source and public domain," Nourbakhsh said. "There is no incentive to make money here. None of the corporations that funded are looking to license this. These companies gave us gift money--even better than grant money because there's no strings--to help us try and come up with ways to get people to be more creative with tech and more tech-literate."
Robots for the rest of us | CNET News.com - Link.
More:
Build Your Own TeRK Robot With Robot Recipes - Link.
Posted by Phillip Torrone |
Apr 27, 2007 11:00 AM
DIY Projects, Electronics, Kits, Robotics |
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| Comments (1)
Drawbot Source Code
Last year, a laptop meltdown resulted in the source code for the drawbot disappearing. Adam recently took the time to rebuild a bunch of it. Now you can download it and check it out! - Link
Even more code. Here are the programs that make it work! Drop your bmp into the launchdrawbot program and you're good to go. Adjust the parameters in drawbotmaker.py as image settings - Link
Posted by Bre Pettis |
Apr 27, 2007 04:38 AM
Electronics |
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| Comments (5)
April 26, 2007
HOW TO - Control your Mac from Arduino, the easy way
Here's how to control your Mac with an Arduino board, so... you could do stuff like have iTunes start up and play music when you walk in the door... Massimo writes -
A while ago I wrote a small app that would execute AppleScript commands depending on the data send from an Arduino board connected to my mac. I've been asked a few times to release it but it was just a quick hack. Now thanks to HyperWerk in Basel, I've had the time to fix it a bit for a student project. I'm releasing it to see what people do with it.tinker.it » Blog Archive » Control your Mac from Arduino, the easy way - Link.
Related:
- Diecimila (Ten thousand) - Happy 10000th Arduino board ... - Link.
- Arduino + virtual worlds - Link.
- Arduino, the Basic Stamp killer? - Link.
- Fun with Xbee and Arduino - Link.
From the pages of MAKE:
Arduino Fever. MAKE 07 - page. 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. Subscribers--read this article now in your digital edition or MAKE 07 @ the Maker store.
Posted by Phillip Torrone |
Apr 26, 2007 05:00 PM
DIY Projects, Electronics |
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| Comments (0)
Magnetic water bottle for soldering
This one goes out to all the women and men of solder nation - if you do electronics you likely have a little sponge you wet with water to clean off the soldering tip as you burn away. But water and electronics rarely end well, I've spilled water before from a glass or bottle on the workbench, so here's a handy tip - get a cheap container with fold down spout at the $1 store, place a strong magnet in it, fill with water. Your new magnetic water bottle sticks to anything metal on the bench (like the metal poles here) and you always have solder-water.
Got a tip? Send it in!
Posted by Phillip Torrone |
Apr 26, 2007 01:00 PM
DIY Projects, Electronics |
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| Comments (2)
April 25, 2007
iLiad and 3G wireless modem
Huh, this is interesting a preview of an existing e-ink reader (ebooks) that can use a 3G modem... drazvan writes -
I have just managed to "convince" my Vodafone Smartmodem (a 3G/HSDPA wireless modem on Vodafone Romania) to talk to the iLiad via USB serial (the usbserial module - see the other thread in this section of the forum). The modem appears to work fine (I can connect to it, send it AT commands, etc). I've also compiled the PPPD package and the kernel PPP modules, tomorrow I will try to make it connect via PPP. If that works, I'll publish the entire procedure and the necessary modules here.As a teaser, I'm attaching a photo of the iLiad hooked up to the Vodafone modem. Looks like an alien contraption but it works.
MobileRead Networks - iLiad and 3G wireless modem - [via] Link.
Posted by Phillip Torrone |
Apr 25, 2007 01:00 PM
DIY Projects, Electronics |
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| Comments (0)
HOW TO - Make electronic spider robot sculptures
I Make Projects shows you how to make some electronic critter art -
Years ago when I was in school, I got most of my parts from snipping or desoldering them off of junked curcuitboards, or from taking apart old equipment. One day I took some of the parts and soldered them into what I wished was a functional spider robot - but even though it didn't work, it was pretty in its own way. It was also fun and inexpensive and fast to make. Since then I have made quite a few, and they never turn out the same.Here I'll show how to make a simple spider-robot sculpture. You can put your own twists on it all you like. I've even made scorpions as well. The best way to be creative is just to work with what you have!
I Make Projects - [via] Link.
Posted by Phillip Torrone |
Apr 25, 2007 08:00 AM
Arts, DIY Projects, Electronics |
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| Comments (0)
Can a 12 watt CFL bulb work in a 50 watt lamp?
Scott sent this question in (Makers correct me if I'm wrong in my response and/or debate the merits of CFL, you know you want to!)...
Hi Phillip -I thought you might be able to either answer this question or suggest someone (or somewhere) that could. I have had a hard time getting a straight answer.
I'm no genius when it comes to things electrical. It seems to me like this is something that should become an important part of public knowledge. There are so many reasons to embrace CFLs (compact fluorescent lamps) (like pollution, the cost of oil, global warming and the future of our planet), but if people (like me) remain in relative ignorance, its never going to happen. I guess I'm taking a step in the right direction, but I'm still kind of in the dark (I really did not intend that pun, sorry).
My question is about CFLs, or compact fluorescent light-bulbs (more formally: compact fluorescent lamps)
I bought this lamp at ikea, and near the socket it says to use a maximum 50 watt type R bulb or a 40 watt type A bulb (it says, in far fewer words, that exceeding this rating could cause the whole thing to go up in flames). I assume they mean incandescent. So I bought a CFL to use in this lamp. My CFL is 12 watts, which is equivalent to about 50 watts. My question is: is it safe to use this bulb in my lamp?
Anyway, ikea customer service only said "don't use a bulb that exceeds the wattage recommendation." I have emailed GE, Philips and some other big faceless lighting and power companies. So far, no one has returned my reply.
The short answer is yes it will work, the light -output- is equivalent to 50 watts. The CFL just needs 12 watts and that's what it will get.
Oh, the usual caveats apply - for maximum safety please avoid electricity and only use USDA approved sunlight and stay away from any focusing lens to insure everything won't go up in flames.
Posted by Phillip Torrone |
Apr 25, 2007 12:00 AM
Electronics, Green |
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| Comments (19)
April 24, 2007
Laser-cut mount for a hot air gun
Evil Mad Scientist Laboratories writes -
We made a laser-cut plywood mount to hold the sugar-heating hot air gun for the 3D printer, and it turned out to be a neato project on its own; check out our cool little laser-cut parts!
Evil Mad Scientist Laboratories - A laser-cut mount for a hot air gun - Link.
Related:
DIY Hot Air Soldering Iron - Link.
$45 Hot Air Pencil - Link.
HOW TO make a SMT Hot Air Pencil - Link.
Posted by Phillip Torrone |
Apr 24, 2007 02:00 PM
DIY Projects, Electronics |
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| Comments (0)
Weller WHA 900 Hot air station
Weller (they make some of the best soldering irons) has a new air rework station. We covered some hot air tools today, and this just popped up from the Weller blog. Price: $499 --
The WHA900 maintains nozzle temperature, regardless of the air flow rate. That's because the built-in closed-loop temperature feedback control, which uses a sensor at the nozzle, instantly adjusts the heat output to maintain the temperature level you have selected.The WHA900 is the only unit in its class that has a temperature air flow and temperature setback feature that can be pre-selected by the user.
Weller nozzle technology uses conducted heat from an integral hot plate in the nozzle to heat the defective component to a temperature just below the solder melting point. Hot air is then directed precisely on to the legs of the component to melt the solder joint, allowing removal of the component.
Introducing the Weller WHA 900 Hot Air Station « Weller blog - Link.
*This not an ad, we don't get paid for this, but I would like to convince Weller to do a booth at Maker Faire - I think the attendees would love that.
Posted by Phillip Torrone |
Apr 24, 2007 01:00 PM
Electronics, Toolbox |
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| Comments (1)
Crystal radios & round up
Kevin Kelly has a great round up of crystal radio builds, free plans and kits (some I haven't seen either) - Link.
Inspired related round up:
HOW TO - Building a crystal radio out of household items - Link.
Refugee Radio - An energy-independent AM-receiver radio... - Link.
Building a radio in 10 minutes - Link.
Crystal radio mousetrap - Link.
Crystal Radio Kit for the Modern Era - Link.
Make a "Cigar Box" crystal radio set - Link.
HOW TO - Make a simple AM radio - Link.
From the pages of MAKE:
DIY Aircraft Band Receiver. Modify an AM/FM radio to pick up air traffic control communications. MAKE 09 - Page 27. Subscribers--read this article now in your digital edition.
TV Set Salvage. Nothing good on TV? Well, there's plenty of good stuff in a TV. MAKE 09 - Page 138. Subscribers--read this article now in your digital edition.
Posted by Phillip Torrone |
Apr 24, 2007 08:00 AM
DIY Projects, Electronics, Retro, Telecommunications |
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| Comments (2)
HOW TO - Make a digital oscilloscope
fpga4fun.com shows how to make a single channel 100MHz/100MSPS (100 mega-samples-per-second) RS-232 based (and USB) digital oscilloscope (an oscilloscope allows you to view signal voltages) - Link.
Related:
- Oscilloscope art - Link.
- Oscilloscope clock - Link.
- PIC Based Oscilloscope with LCD - Link.
- ScopeOnPC - Turn your PC into a an oscilloscope - Link.
- Using an Oscilloscope - Link.
- Open source USB lab instruments (almost) - Link.
From the pages of MAKE:
Gaming on the EDSAC and PDP-1 - Retrocomputing. MAKE 08 - Page 178. From the earliest computers came the first computer games. Subscribers--read this article now in your digital edition or get MAKE 08 @ the Maker store!
Posted by Phillip Torrone |
Apr 24, 2007 07:00 AM
DIY Projects, Electronics |
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| Comments (3)
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Current Podcast
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