Low-power FM radio

By , 2007/08/27 @ 6:00 am

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Rick Karr over @ Bill Moyer’s Journal has a great story about low power FM and how it might go away when it’s most needed…

Imagine climbing a hundred-foot radio tower in the howling headwinds of a Category 3 hurricane so that you can stay on the air and keep your neighbors informed as catastrophe bears down. Or remaining at your post, on the mic and on the air, as floodwaters engulf the radio studio. Or pouring every cent of your income into the station to say on the air the aftermath, even though you’re living in a FEMA-issue trailer because you’ve lost your home and everything in it.

I can’t. But Brice Phillips has done every one of those things. And that’s why he’s one of the most remarkable people I’ve ever met, and an inspiration to those of us who believe that community radio has the power to change lives — and save lives.

Low-power FM radio – Link.

Pictured here, FMexperts.com‘s circular polarized FM broadcast antenna – Link.

Punch the (alarm) clock, no really…

By , 2007/08/27 @ 5:00 am

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Here’s how to mod an alarm clock so that it will enter snooze mode when you smack it, Dimension Engineering writes -

In this project, we will bypass the mechanical snooze switch on top, and instead turn the alarm clock off in a much more fun way: punching it! Hopefully along the way I will be able to teach you some techniques that are useful in reverse engineering, so you can apply them to future projects.

This project is aimed at intermediate electronics enthusiasts, who have mastered the art of the multimeter and are comfortable with soldering a complex circuit.

This project involves working with a device that connects to mains voltages. The alarm clock I used just so happened to be designed so well that it was impossible to touch any mains voltages inside it. Other alarm clocks may not give you this comfort and will most likely have a different layout inside. Do not attempt this project unless you are 100% sure you know you can do it safely!

DE-ACCM application note: Hacking an alarm clock – [via] Link.

Zork!:
 Blog Samplesa
Shocking alarm clock!- Link.

DIY remote camera trigger (PDF)

By , 2007/08/27 @ 4:00 am

Make 1041
Wiley has a 46+ page PDF on how to make your own DIY auto-camera trigger – [via] – Link (PDF).

From the pages of MAKE:
Make 1042
Kite Aerial Photography Puts Your Eye in the Sky. To take pictures from a kite, you need three things: a kite, a camera, and a special rig that attaches the camera to the kiteline and activates the shutter button on the camera. Here’s how to do it. MAKE 01 – Page 50. Subscribers–read this article now in your digital edition or get MAKE 01 in the Maker store – Link.

Make 1043
Single-Use Digicam for Kite Aerial Photography. A simple, lightweight timer circuit triggers a shot every minute. MAKE 02 – Page 130. Subscribers–read this article now in your digital edition or get MAKE 02 in the Maker store – Link.

The SunFlopper: a mini heliostat made from a floppy drive

By , 2007/08/27 @ 2:00 am

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Brian writes -

This is still pretty much a work-in-progress, but I did manage to create a successful heliostat (sun tracker) from the above TEAC model FD-235HF 3.5″ floppy drive. This procedure will likely work just fine, with a bit of adaptation, on any drive new enough to have CMOS logic on its chipset. This particular drive (probably a lot of others) only needs a single 5V DC supply. It has two boards, one with the stepper and main logic, and one with the spindle. The first is the only one needed, and it draws 0.1 Watt with the motor off, and 1 Watt with the motor running, so it should be easy enough to power with a cheapo hobbyist 5V solar cell if stand-alone operation is needed, perhaps a sub-watt one if a large capacitor is supplied to build up enough juice for a motor step over time…

The SunFlopper: a mini heliostat made from a floppy drive – [via] Link.

Gotta do something with those old floppy drives!

Related floppage:

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HOW TO – Reusing a floppy stepper motor – Link.

 Images Homefeatmonkey18
Readymade’s CD covers from old floppy discs… – Link.

 Blog Fynk5Zrpr5Erie2Psn.Medium
HOW TO – Make a floppy disk bag – Link.

 Blog Startrek
Floppy Disk Enterprize – Link.

 Blog Disk-Combobulation
3.5 inch floppy diskette sculpture – Link.

 Blog 08 Label And Guide Shim
SD/MMC card in floppy edge-connector – Link.

 Blog 200612659 17Cf67995B
Huge floppy disk – Link.

 Blog 2Ed34437Bbee2D00De72C984.Medium
CD/DVD cases made with old 5 1/4 floppy disks – Link.

Modifying a cheap portable cellphone jammer

By , 2007/08/27 @ 1:00 am

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This is interesting, “Blastwavelabs” bought a portable cell phone jammer from a company called DealExtreme, it appears the jammer ships set to frequencies outside North America but it can be modded to work by turning the trim pots a bit (small potentiometers to tune/trim the voltage)… I’m not sure that would actually work that great without a spectrum analyzer, either way a fun read and please debate in comments about a device like this… – Link.

Related:
Sku 4355 1
Personal cell phone signal blocker device ($48 – not sure what’s up with this company, proceed with caution) – Link.

332373631 4Df091E053
Wavebubble open source RF jammer – Link.

Math clock

By , 2007/08/27 @ 12:00 am

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Not sure where this clock came from but it’s a fun way to tell time with math formulas… It would be simple to make your own with any cheapo clock kit – [via] Link.

Related:
 Zoom Img 10045
Continuous-sweep mini quartz movement clock parts (a clock kit I spotted, post up other/better/cheaper ones in the comments)… – Link.

iPhone Apper

By , 2007/08/26 @ 8:15 pm

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Jon Maddox made a nifty tool that let’s you easily create web application bookmarks that dock on your iPhone’s home screen.

Tired of going all the way to MobileSafari on your iPhone to use web apps that were built with the “sweet” iPhone SDK?

Provide iPhone Apper with a URL, name, and icon… and iPhone Apper will provide you with an application to install* onto your iPhone. A quick reboot, and your favorite and most visited web application is available from the home screen.

You provide the url, title and a png icon file and it will create the little application for copying to your iPhone’s Applications folder. You can really only squeeze 16 icons on the home screen, so choose your web apps wisely.

iPhone Apper – Link

Best of CRAFT

By , 2007/08/26 @ 6:00 pm


Here are some of my favorite posts from the CRAFT blog this week:

  • HOW TO – Getting Started with Arduino – Link.
  • Quilling 101: The art of rolling thin strips of paper into different shapes – Link.
  • Crochet Computer Tape Baskets – Link.
  • Mosaic Art by Jason Mecier – Link.
  • Baseball Cupcakes – Link.

Sonic Circuits Festival of Experimental Music

By , 2007/08/26 @ 1:30 pm

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If you’re going to be in the Washington, DC area between Sept 7-23, you might want to check out some of the Sonic Circuits Festival. From the press release:

The American Composers Forum Washington DC Chapter and volunteer
coordinators/curators are proud to present an expanded SONIC CIRCUITS
festival for 2007. Last year’s event presented four nights of
performances exposing District audiences to cutting edge experimental
audio from local and international artists.

This year, DC SONIC CIRCUITS 2007 promises more! More genre-bending
sounds and world-class performances! Additional venues! Film and
Video! More adventurous music and exploratory visions from over 60
artists from the DC Metro area, across the United States, Canada,
United Kingdom, Germany, The Netherlands, Belgium, Sweden, Norway,
Spain, & Lithuania!

Sonic Circuits – Link

Related:

  • MAKE’s circuit bending posts – Link
  • MAKE’s Events archive – Link

The age of steampunk

By , 2007/08/26 @ 12:00 pm

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Chris writes -

There was a good article in today’s Boston Globe on Steampunk. It doesn’t mention Make in the text, but many of the people and their projects have been featured on the Make Blog. It provides some good back story for the art form and lots of pointers to where to get more information on Steampunk.

The age of steampunk – The Boston Globe – Link.

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