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November 20, 2009

Mac mailbox

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Mac mailbox from Te Atatu in Auckland...

Posted by Phillip Torrone | Nov 20, 2009 08:00 PM
Remake | Permalink | Comments (0) | Suggest a Site

LHC tweets its first circulating beam of 2009

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LHC tweets its first circulating beam of 2009, good luck finding the Higgs gang. Photos here...

Building a shop presence notification system

As a member of Hack Pittsburgh, our local hackerspace, one thing I've wanted to know if anyone else is there before I make the trek over. Well, so did Andy Leer and Marty McGuire, so they decided to build a shop presence notification system. They reasoned that they could measure the ambient light level to determine if someone was around, because people tend to turn on the lights when they show up. With this in mind, they hooked up a photocell to a donated iobridge module, and had a notification widget up on the website in record time. Excellent work!

Vacuum tube prototyping board

Bruce Heran made this prototyping board for his tube projects. He writes:

This is a project that I made to take care of an ever increasing need to prototype vacuum tube (valve) circuits. As you can see from the photos, it really is a test "board." I do a lot of work with tubes and love to design and improve circuits. In the process I often use various CAD type programs to rough out the designs. I have frequently found that the models do not agree with the final build. Some are right on, but most are off enough to turn a good idea into a waste of time. Thus the need to quickly prototype designs. Now I could have created this board with many additional features - speakers, output transformers, LEDs... But what I needed was a simple way to test single stage tube circuits. So for simplicity I wired the tube pins together (pin 1 to pin 1 and so on). The leads from the pins are brought out to terminals on a "Euro" style terminal strip. I included several other "Euro" strips, a pair of RCA jacks, a 100 k-ohm variable resistor and solderless prototype breadboard. This solderless breadboard is available in various sizes from several sources. If you build one of these boards, feel free to use the idea to adapt it to your needs and use whatever parts you so desire.

[Thanks, Gio!]

DIY Vacuum Tube Prototyping Board

Free LED Cookbook from TI

By way of Andrew Q Righter of HacDC comes word of this free PDF from Texas Instruments, a 41-page "cookbook" of circuit designs and application notes for TI's LED-related components. [Thanks, Andrew!]

LED Reference Design Cookbook [PDF]

How-To: Open source intervalometer for Canon, Nikon cameras

peterdr intervalometer.jpg

Instructables user peterdr has put together a really excellent tutorial on how to build his CT-1 open-source hardware intervalometer for Canon and Nikon digital cameras. There's more info about the project at his personal website, and a parts kit is for sale on Amazon.com.

PYMT, a multi-touch library for Python

Interested in building programs with fancy multi-touch interfaces? Speak Python? Well, in that case you might want to have a look at PYMT. Designed for rapid interface design, it looks like it would be fun to play around with. [via the space station]

Make: Projects - Pneumatic trough, part II

image from golden book of chemistry experiments page 28.jpg

Last week I wrote about how to construct a simple sheet metal "bridge," which, in combination with an ice cube bucket and an olive jar, makes an effective pneumatic trough for collecting gas samples over water. This week I'm going to show you how to use this apparatus to generate and collect pure oxygen, and how to use that oxygen to observe the brilliant blue flame of sulfur oxidation.

Tools:

Pneumatic trough apparatus from part I
Small piece of plate glass (I used the mirror from a makeup compact)
Lighter
Twisted wire sample loop
250 mL Erlenmeyer flask (I got mine from The Maker Shed)
#7 two-hole rubber stopper to fit Erlenmeyer (mine came from this assortment)
Two 80 mm lengths of 5 mm glass tubing to fit stopper (such as this)
Approximately 18" length of 5/16" OD x 3/16" ID PVC tubing to fit glass tubing (common hardware store item)

Materials:

Water to fill bucket
Elemental sulfur powder (also called "Flowers of Sulfur," available at some drugstores and here.)
3% hydrogen peroxide (common drugstore item)
Manganese dioxide (can be recovered from an alkaline dry-cell battery or purchased here)
Petroleum jelly (drugstore)

Read full story

Cardboard tube battle

My local library picked up on the festive trend of Cardboard Tube Fighting. The Boston Globe covered the preparations:

The group discovered cardboard tube fighting last summer in time to incorporate a bit of it into a presentation on Greek mythology at a reading program party.

The weapons are cylindrical pieces of thick cardboard about 4 feet long. The appeal, explains young-adult librarian Ellen Snoeyenbos: "It's totally ridiculous.''

As word of mock combat with reliably harmless weaponry spread among the town's youthful warriors, Snoeyenbos and the Bookmarks seized on the fund-raiser as a chance to exploit their discovery of the fighting fad made popular by YouTube.

Saturday's event will feature one-on-one tournaments, guild-on-guild skirmishes (up to 10 fighters per team), "and an all-out battle for possession of the Royal Crown,'' according to the club.

They've gathered hundreds of tubes, and youth of all ages are uparmoring in a pulpy way.

More:
Cardboard Tube Fighting League

Make: Holiday Gift Guide 2009: Gifts for dads

There's a funny thing about dads' toys. Very often, kids borrow dad's supposedly grown-up toys and dad plays with toys designed for a much younger demographic. With that in mind, we present the Gifts for Dads list, filled with stuff that may appeal to more than one generation in your household. And you may also want to check out the holiday gift guides over on the GeekDad blog.

Read full story

LEGO-sized hole punch by MUJI

Paper craft meets LEGO with MUJI's quad hole punch and kits, available November 27th at MUJI Japan. [via CRAFT]

Cross multi-tool

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Dutch designer Michiel Cornelissen sells these cruciform screwdrivers, which are laser-sintered stainless steel. There's a flat-blade, a Phillips head, and an IKEA-sized hex bit. [via Dude Craft]

How PCBs are routed

One hour of PCB routing with EAGLE, compressed to seven minutes, over at adafruit.

NEC announces universal translator … sorta, kinda

NEC announced what could be an early, real-life version of the universal translator -

NEC said the Tele Scouter was intended to be a business tool that could aid sales staff who would have information about a client's buying history beamed into their eye during a conversation.
But, it said, it could also be put to a more exotic use as a translation aid. In this scenario the microphone on the headset picks up the voices of both people in a conversation, pipes it through translation software and voice-to-text systems and then sends the translation back to the headset.
[…]
NEC said the Tele Scouter would be launched in Japan in November, 2010 but would initially lack the translation feature. A version that can provide subtitles would follow in 2011, it said.

Now we just have to see how good that translation software really is (please be good!). Read more over at BBC News.

Arcade button MIDI controller kit

DJTechTools' upcoming solder-free MIDI controller kit provides users with 16 arcade button triggers + LEDs and will apparently be released as an open source product at launch -

• Release Date: November 30th • Price: Aprox $125 for the Kit + Arcade Buttons ($2.50 each) optional wood case- $40 • Plug and Play-compatible device, compliant MIDI controller • USB powered • Must be assembled (no expertise required) • 16 programmable buttons • 16 programmable LEDs • Expandable to 20 programmable buttons and 4 analog controls • Limited-edition 200-piece run in this configuration (black PCB with blue LEDs)

Should the $165 asking price seem a bit much, do consider the full DIY options. [via Synthtopia]

Related:

Midibox rox your sox

DIY Devo domes

Troy Davis created some very awesome recreations of Devo's signature Energy Domes. Beginning with a tiered stack of fiberboard for the mold, through to vacuum forming, paint job, and padding - a thorough explanation can be found in his project pictorial. sweet.

Weekend Project: Beetlebot

Simple robot from your parts bin that avoids obstacles. Thanks go to Jerome Demers for the original article in MAKE, Volume 12.

To download the Beetlebot video, click here or subscribe in iTunes.

Check out the complete Beetlebot article in MAKE, Volume 12 or you can also see it in our Digital Edition.

In the Maker Shed:

In the Maker Shed: The Make Beetlebot Bundle

Weekend Project: Beetlebot (PDF)

Simple robot from your parts bin that avoids obstacles.
Thanks go to Jerome Demers for the original article in MAKE, Volume 12.
View the PDF of this project. and then subscribe to MAKE Magazine for other great projects
you can do over the weekend.

DIY accelerometer controlled USB gamepad

Check out this homebrew accelerometer controlled USB gamepad using a PIC18F2550 from Starlino. You'll find code and schematics on their site.

The code for the firmware was written in PicBasic Pro and it implements a HID USB device with 2 axes and 4 buttons (only 2 buttons connected in the prototype). The device is detected by Windows XP/Vista as a standard USB gamepad and can be used with many games and applications.
I am using a 2 Axes Buffered ±2g Accelerometer from DIMENSION ENGINEERING, it has a built in voltage regulator that allows powering the accelerometer directly from the USB bus (5V)

New in the Maker Shed: Mystery Box kit

The Mystery Box kit is a clever puzzle box made by our very own John Park, host of Make: television. Here is how it works: first you assemble the laser-cut wooden box, placing a treasure inside. Next, you present the Mystery Box and its hidden contents to a friend, loved one, or enemy. Ask them to not open it, instead encourage them to cherish the Mystery Box and its contents. Maybe they will listen to your suggestion, enjoying the mystery within for generations to come. Then again, maybe they will wait until you leave and eventually figure out how to open this clever wooden box? Who knows? One thing we do know, whoever receives the Mystery Box as a gift will certainly love it!