Mon, 18 Feb 2008
Hardware Into Art: TVIC/Geekosystem Crossover
What will this become?
Come to The Valley in Christchurch this week (Tuesday!) and don't just find out, make IT/ART happen!
Here's some of the details, check out the event announcement for more details:
The Valley In Christchurch February dinner and hack events
When: 6:00pm Tuesday 19th February 2008
Where: The China Kitchen, on Hereford St, opposite the Flight Centre
And then join us post-dinner for a special TVIC-exclusive Geekosystem session:
When: ~7:00pm—10:00pm-ish
Where: The Physics Room, Second Floor, 209 Tuam Street, Christchurch
Rumour is that some pizza and beverages will be provided while you work on your hardware hacking masterpiece.
Thanks to Adam and the Physics Room for organising this special after-hours session for us!
The photo above (courtesy of Adam Hyde) shows some of the "raw materials" that will be on hand.
Tending Networks: The 5th Aotearoa Digital Arts Symposium
As it happens, the Geekosystem coincides with the The 5th Aotearoa Digital Arts Symposium produced by The ADA Digital Arts Network.
Self-described as "New Zealand/Aotearoa's only digital artists' network. ADA was born of the observation that although new media artists were often highly networked in terms of both their own practice and their professional relationships, there was no national organization drawing together those with a common interest in digital art."
The symposium is an opportunity for New Zealand's digital/new media artists to meet face to face. Check out the upcoming weekend's programme.
I've actually been invited to present a brief overview of some of my Arduino hacking to the group during their "lightning talk" session on Saturday afternoon. A pleasant parallel to the symposium topic is my most recent project has been an ethernet expansion shield for the Arduino. I must write some more on that.
Foo Fruition
Speaking of needing to write more... My presentation at the ADA Symposium and the TVIC/Geekosystem crossover are a direct result of my attendence earlier this month at Kiwi Foo Camp 2008 (a.k.a. Baa Camp) and some people I met there. I must write some more on that. :-)
Posted at: 06:12 | category: / | | Comments ()
Thu, 10 Jan 2008
Summer hacking
Last week I caught up with Marek and the elusive Phillip (finally!) and showed off my Arduino connecting to IRC:
It turned out jandals and shorts weren't actually the best wear for the weather on the day but still good to catch up.
Posted at: 11:10 | category: / | | Comments ()
Tue, 27 Nov 2007
Swapping, Meeting and Buying
I've read for ages that Ham Radio Swap Meets are great places to get good deals on various electronics bits and pieces (and, admittedly, junk too). A while back I discovered the website of the local Christchurch, New Zealand Ham radio branch. Unfortunately their most recent events page mentioned a swap meet in March but with no indication of which year!
Until a couple of weeks ago I hadn't followed up on the idea any further but on a whim I decided to email them. In a happy coincidence it turned out that their next annual swap meet was to be in two weeks time (this past weekend).
The shopping list
Although I got to the event later than intended I still picked up a few interesting items. Indeed, it was probably easier on the wallet having less temptation in purchase choice. :-)
Among a few other bits and pieces I managed to pick up three oscilloscope probes and related items for $NZ1, a partially used wirewrap set for another $NZ1 and some small project boxes. It will be interesting to see if having proper probes makes any difference when using xoscope—the Linux sound-card oscilloscope.
Also purchased a box of assorted ICs for $NZ5 which may turn out to be both a convenient and reasonable deal. I'm around halfway through cataloging the contents of the box and about two-thirds of the 70+ ICs seem to be useful with a good assortment of 7400 series, 4000 series and op-amps amongst others. It's taken ages to do the cataloging (Octopart and similar sites have been very helpful) but hopefully it'll pay off in the long run—if nothing else I'm learning things along the way. Looks like there's a few "historical" items dating back to around the late 70's/early 80's too.
Acquiring vices
My largest purchase (something approaching "real money" :-) ) was a PCB Soldering Vise which I later found advertised here at a price that made my purchase price seem reasonable.
Described as a "Mark III Circuit Card Fixture" seemingly made by Technical Devices Company of Torrance, California it's like a PanaVise circuit board holder but presumably cheaper and less well made...
The device looks like this, but less shiny:
It's likely to be larger than what I need but should hopefully be a useful addition to the tool chest. I even found a scan of Mark III Circuit Card Fixture assembly instructions (original image source) in case I unassemble it accidently...
All up it was an interesting time—I ended up stopping in at the SuperShed and a few garage sales on the way home but only added an ethernet cable to the purchase pile. :-)
Posted at: 01:30 | category: / | | Comments ()
Mon, 19 Nov 2007
TVIC : Six geeks, Seven CD-ROM drives, One Pub—The Movie
Seth's blogged and uploaded the video from this month's The Valley in Christchurch tech dinner and CD-ROM hackfest.
Here's the finale, just in time for the Christmas lights season:
Links to all the videos on YouTube:
- Deconstruction getting started
- Morris risking his cell battery on the tray eject (Not shown: Successful drink delivery mechanism. :-) )
- Tim trying out the cell battery on a handy motor
- Another "bright" idea
- The result! CD-ROM Christmas Lights!
Thanks Seth!
Posted at: 13:50 | category: / | | Comments ()
Thu, 08 Nov 2007
TVIC : Six geeks, Seven CD-ROM drives, One Pub
I've just got back home from this month's The Valley in Christchurch (TVIC) tech dinner. It was goood... Real fun.
After dinner at our now usual haunt we ended up at our (fast becoming usual) follow-up haunt.
Last month—after visiting the recycling oasis Supershed—I had brought along an old CD-ROM drive and dismantled it during the post-dinner conversation. (Hey, why not? ) Apparently inspired by the fun I had had, this month Marek had organised to bring along seven old cd-rom drives supplied by Morris. By this stage we had six people at the table, various beverages and enough screwdrivers that we could all attack the task of drive dissasembly with gusto. And we did.
The highlight of the evening (warning: non-geeks may not understand) was when—following a comment I made—Morris managed to hook up a tray-eject motor to a pair of green and red LEDs (salvaged from a drive), making them flash alternately when he pulled the tray in and out. Seth took some photos and video so hopefully it'll be online soon.
In spite of all this frenzied electrical activity the bar staff never asked us to leave or stop, so I apparently mass cd-rom drive disassembly counts as an acceptable activity at the Bohemian.
Next month: printers!
Update: Check out the CD-ROM hackfest videos.
Posted at: 23:20 | category: / | | Comments ()
Wed, 31 Oct 2007
Gratuitous Update
In a transparent attempt to not leave the month of October blog entry-free here's a quick and gratuitous update.
One-way wiki
As noted back in July, I've been running a personal "one-way wiki" as an experiment. My primary goal was to get more of my in-progress hacks off my harddrive and onto the public net where they might be of more use to someone. The secondary goal was to try to reduce the number of browser tabs I had open and chewing up memory.
Overall I think the experiment has been a success with a (very) rough count of about ten-thousand words over about thirty pages in the wiki. While many of those words are only links there's a few in-progress projects partially documented also.
I still probably have more tabs open than I'd like but I think I'm making progress on that front.
The wiki has definitely been a plus for documenting in-progress projects and keeping track of details for recovering from context switches. Hopefully the notes—such as they are—are of use to others as well.
I think the only down-side is that my blogging activity has become even more curtailed than it was—mainly because I'm documenting items in the wiki rather than on the blog. It is entirely possible of course that I wouldn't have posted anything more to this blog even if if I hadn't had the wiki. In light of this however (and a couple of requests in this direction) I'm thinking of generating blog entries from the "recent changes" record of the wiki so people who are interested can still keep track of what I'm up to. When or if this idea actually gets implemented remains to be seen. :-)
Recent changes
In the interim here's a few links into the wiki:
- Most of my recent projects have focused on the Arduino hardware platform. I've been working on interfacing an I/O expander and ethernet module with success. You can check out my Arduino interfacing demonstration videos too.
- A growing list of links on various electronics topics including PCB-making, DIY test equipment and tutorials.
- Some notes on using the open source elecrtonic design software package KiCad on Mac OS X.
- I also created a set of electronic breadboard templates in SVG, PNG and PDF formats. That page even got featured on the Makezine blog.
- Finally for now, an in-progress project to reverse engineer the Skannerz Racerz hand-held link-able toy racing game. This project has also made use of the xoscope sound-card oscilloscope software package.
Posted at: 23:20 | category: / | | Comments ()
Thu, 08 Mar 2007
Attending MIT
Today was my first day of attending classes at MIT... Ok, so not really. It is however probably as close as I'll ever get to attending unfortunately—although I did manage to visit the campus a couple of times during my trip to Cambridge last year.
On to the actual story...
While I've been aware of MIT's Open CourseWare initiative for some time I have not looked too deeply into what they have on offer. I can't remember how I ended up there today but while on the site I thought I'd have a look at what courses are available under the banner of Electrical Engineering and Computer Science. There are many papers available on the web site but there does seem to be a wide range in terms of the quality and depth of the materials online. In terms of the papers I was interested in, only 6.002 Circuits and Electronics, Fall 2000 seems to feature lecture videos and comprehensive notes.
For much of my life I have had an interest in electronics but I've also felt I've never had a strong grounding in the basics. None of the material (books, web sites) I've looked at lately have particularly grabbed me so I wondered if watching some lecture videos might help—I know, what kind of geek am I? Oh, wait, one of the geeky kind I guess. :-)
I've just finished watching the first of twenty-five lectures—this one entitled "Introduction and Lumped Circuit Abstraction" presented by Professor Anant Agarwal (direct video and notes links). The lecture video was enjoyable, reasonable quality and the content was laugh-out-loud funny in places—yes, really:
- "I could do this all day, it's so much fun." (While waving a hair-dryer over a thermistor.) ~32m40s
- "If I really believe in my own BS anything's a lumped element—so here's a pickle." (This demo is kinda cute.) ~36m52s
A real live MIT pickle
The text for the course "Foundations of Analog and Digital Electronic Circuits" seems to be available in New Zealand for $135.00.
I'd probably prefer a non-RealVideo video source but overall this first experience has been pretty good—time will tell if I make the time to view the rest of the lectures. When you think about the content MIT has put online even in its current basic form it's really quite impressive—makes me wonder what I'd have done with it in my high school years.
This internet thing may yet amount to something...
Posted at: 04:55 | category: / | | Comments ()