TGIMBOEJ: One year later

TGIMBOEJ - new logo

One of the big projects that we launched in 2008 is The Great Internet Migratory Box Of Electronics Junk, a pay-it-forward style hardware sharing program for electronics.

Since our original article, TGIMBOEJ (pronounced Tig-Ihm-Boh-Edge) has somewhat taken on a life of its own. In that article, we set up simple guidelines for how to pass the box along, and in the interim we have taken a "laissez-faire" approach, watching and learning from the successes and troubles with that model.


Our mostly-hands-off approach to supervising TGIMBOEJ has worked remarkably well in some respects. There are upwards of 40 circulating boxes now, which have passed through hundreds of hands. And, hundreds of other people have signed up on our wiki site tgimboej.org as potential recipients.

On the down side, the mean free path of many of the boxes has been far too short-- some have made it just one hop before stopping.

In talking to folks about the boxes that got stuck, we identified three main stories (all of which point us towards fairly obvious solutions):

1: "I sent it to some guy, but I haven't heard anything since then."
2: "Oh yeah-- I've been meaning to ship it for some time."
3: "I got this box and I don't know what to do with it."


So now, it's time to get serious. First, we've been contacting the last known recipients of the stalled boxes, and trying to get more of the existing boxes back into circulation. Second, we're relaunching the tgimboej.org wiki site with a wholly new set of participation instructions and procedures.

To keep boxes in circulation longer, we're now encouraging that boxes should be sent to people who have specifically requested to participate-- i.e., people who are familiar with how the project works. We've also introduced language in the revised instructions that will guide participants to keep an eye on their box, even after it leaves their hands.


To further alleviate the potential problem of people ending up with boxes but not knowing what to do with them, we're standardizing the printed materials that go into each new box.

TGIMBOEJ Forms -- low res

Gone are the cute but scrawled little notebooks, replaced by two neat PDF forms-- one to log the progress of the box, and the other with detailed instructions on how to participate.


Finally, we're launching (at least) three new TGIMBOEJ boxes this week, which -- along with the others that are coming back into circulation -- will help to increase the number and rate of box exchanges.


So now it's your turn. If you would enjoy trading electronics with like-minded individuals, this is becoming a great time to participate in The Great Internet Migratory Box Of Electronics Junk.

To get started, please read about how it works on the TGIMBOEJ wiki, and if you're game, add your name to the list of Box Requests.

Precision in packaging

Szechuan peppercorns

Sichuan peppercorns, oh yeah! Raven of Made with Molecules after eating them wrote, "There's a war in my mouth." They create a riot of numbing and tingling sensations, particularly if you can get relatively fresh ones (i.e. not stale from sitting around in a Whole Foods bulk bin). Raven links to an abstract about the particular anesthetic-sensitive potassium channels inhibited by hydroxy-alpha-sanshool, one of the components of sichuan peppercorns that make them so exciting.

Science aside, we recently found some in a local asian grocery store, and were particularly struck by the packaging. American packaging often has annoying disclaimers about how contents are packed by weight and may have settled. These peppercorns were not only weighed, but the precision of the scale is indicated! If only all packaging was so straightforward. I was going to complain that the package doesn't say what kind of peppercorns were inside (sichuan peppercorns are not related to other peppercorns) but then realized that the Chinese characters are specific to these "flower peppers" even if the English words are more general. In any case, the reddish husks are recognizable through the bag.

Meggy Jr RGB Twitter Reader

MeggyTwit - 1

We've turned Meggy Jr RGB into a multicolor scrolling LED twitter reader. It's a handy external ambient data device that displays things recently written by your friends on twitter.

This project was inspired in part by the excellent Twitter LED Scroller by David Nichols. The big idea is that we use a host computer to run a Processing application, which periodically checks Twitter for updates, and then sends "scrolling" data, one column at time, to the external LED display.

Read more... (524 words)

Evil Mad Scientist Laboratories: Year 3

Evil Meggies

Happy birthday to us! Evil Mad Scientist Laboratories is now three years old.

To celebrate, we're rounding up our most interesting projects from this past year.



Quick projects and observations:

Magnet tricks

17 cool magnet tricks

moneyDensity.kopi

The monetary density of things

Cheap calendar 2

Cheap Perpetual Calendar

Parts Tray-14

Contact Lens Case Small Parts Tray


Simple LED Projects:

lanterns - 11

Quick, easy, temporary, and beautiful LED garden lights

RoboGames Awards (on)

RoboGames Awards

LED Ghostie

LED Ghosties for Halloween


Food Hacking:

Dry Ice Martini

The Hungry Scientist Handbook

Decoder 2

South Indian Restaurant Menu Decoder


"That's no melon!"

"That's no melon!"

Grillin 2

Hot Dog Bun Grilling Jig

LOLHearts - 34

Improved Custom Message Hearts

Apple Pie

Now that's an Apple Pie!

Caprese - 16

Eyeball Caprese

Fractal Snowflake Cupcakes - 24

Fractal Snowflake Cupcakes


CandyFab

CF6k

The CandyFab 6000


Papercraft

Harley Sleeps

Cardboard Cat Chaise

EdgeLitCard - 49

Edge-Lit Holiday Cards

Hex Boxes5

Hexagonal Stacking Boxes

frabjous - 01

Making a Frabjous


Electronics Projects

Interactive LED Dining table

Interactive LED Dining Table Circuit


Color distortion

Giant seven segment displays

DarkPumpkin - 11

Dark detecting jack-o'-lantern

SolarCircuits - 06

Simple Solar Circuits

Soft Circuit Merit Badge14

Soft Circuit Merit Badge


Kit Projects

Meggy Rainbow

Meggy Jr RGB

VideoPeggy - 09

Video Peggy in action

Peggy 2 RGB

Peggy 2 RGB

2313Card - 1

ATtiny2313 breakout boards

Card1.1Top

Revised ATmegaXX8 boards


Crafty Projects

d12 Bag

DIY d12 Handbag (of Holding)

Meggy Jr RGB Cozy-21

Meggy Cozy

no-sew iPhone cozy14

No-sew iPhone Cozy

fabric klein bottle

Fabric Klein Bottle

Seat recovery

Reupholstery with Used Denim

Missile Command Skirt 24

Missile Command Circle Skirt

Fishbowl cat quilt29

Fishbowl Cat Quilt

Maulie-25

Turning Mollie into Maulie

Bicycle lunch bag

Bicycle Frame Lunch Bag

Acrylic Nesting Bracelets-1

Sinusoidal Bracelet Design


Microcontroller Projects

Time exposure

Tennis for Two, a video game from 1958

stockpumpkin - 11

Scariest Jack-o'-Lantern of 2008

mignonette - 09

70 bits of gaming goodness

Serial Port Added

AVR Serial Communication

lissajous-dark - 07

POV Lissajous figures

Mobius Circuit - 21

Single sided circuit board

bulbdial_1

A Bulbdial Clock


Geek Design

Snowflake generator

Vector Snowflake Application

Kindling

The Amazon Kindling

Pi (squared) trivet - 9

Pi Pie Trivet

lego - 2

Lego Kitchen Crafts

Binary Birthday

Binary Birthday


(Whew!)

Linkdump: June 2009

Making a Frabjous

frabjous - 01

George W. Hart is a professor at Stony Brook and is one of our favorite artists, making a wide variety of stunning geometric sculptures. On his of his many works that has particularly captivated us for some time is a sculpture called Frabjous.

When we realized that George had posted a template for this sculpture we dropped everything, grabbed the cardboard and hot glue, and raced to build our own.

Read more... (696 words)

Basics: Serial communication with AVR microcontrollers

Serial Port Added

One of the distinguishing characteristics of beginner-friendly microcontroller platforms-- Arduino, PICAXE, and a few dozen others-- is that they neatly wrap up and hide the nuts-and-bolts details of interfacing with the hardware.

Like everything else, it's a blessing and a curse. The benefits are clear: A new user who has just acquired an Arduino can plug it in, blink an LED, and have a working demonstration of two-way serial communication in just a few minutes.

The drawbacks are a little harder to see. When you just use one line of initialization that calls a "library," it's easy to overlook exactly what's involved: how many lines of code have invisibly been added to your program? What memory structures have been allocated? What interrupts are now going to disrupt program flow and timing? There's also a portability issue. We often hear from people who got started with Arduino but now want to explore other AVR microcontroller systems, and don't know how or where to start the migration process.

In what follows we discuss a minimal setup for serial communication with AVR microcontrollers, and give two example implementations, on an ATmega168 and on an ATtiny2313. While this fundamental "AVR 101" stuff, we're approaching the problem (this time) from the migration standpoint. Suppose that you had an Arduino based project, where you relied on serial communication-- using the library functions--between that hardware and your computer. From there, how would you migrate to a stand-alone AVR microcontroller with similar functionality, or even to a different microcontroller?

Read more... (956 words)

RoboGames Awards

RoboGames Awards (on)

We've been helping out RoboGames with getting the award designs ready for next weekend. We just got the final prototypes done and handed over for production and we're loving how they turned out! The awesome official artwork by Doctor Popular (below) features prominently on the medals, lit by throwie-style LEDs hidden between layers of acrylic. You want one of these around your neck, don't you?

The event runs Friday-Sunday, June 12-14 at Fort Mason in San Francisco. Get your tickets now!

We'll be bringing CandyFab to show off and lots of kits and pretty LEDs for sale. We hope to see lots of you there next weekend!

Fabbing at Maker Faire

MakerBot Tour

CandyFab managed to infiltrate a couple of the other 3D printing projects at Maker Faire this past weekend. That's me above, at the MakerBot booth, in my brand-new MakerBot shirt, explaining MakerBot to some Maker Faire visitors. Below, Kenji's Fab at Home sports a brand new CandyFab vinyl racing sticker. CandyFab itself performed like a champ, printing candy and raising blood sugar levels all weekend while we talked shop with all the other fabbers.

FabatHome

Tiny portable AVR projects: ATtiny2313 breakout boards

2313Card - 6

We use a lot of our ATmegaXX8 "business card" breakout boards for the ATmega168 microcontroller. We also still wire up a lot of minimal target boards to use the ATtiny2313 microcontroller, so here's the missing piece: A simple breakout board for the ATtiny2313.

Read more... (665 words)
Welcome to Evil Mad Scientist Laboratories. New projects are posted every Wednesday.


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DIY Hardware for Electronic Art


Interactive LED Panels


Meggy Jr RGB
LED matrix game
development kit.


Business-card sized
AVR target boards


Peggy & Peggy 2
LED Pegboard kits