CoderDojo

May. 11th, 2013 02:47 pm
chebe: (CoderDojoGirls)
CoderDojo, for those unaware, is like a free Saturday computer club for children, set up by various groups (increasingly companies are setting up their own), with an aim of teaching children some form of computer language. The most popular is HTML, CSS, and Javascript. Recently I started helping out with the CoderDojo in DCU (website launching soon). It's just over a year old, and today was my second week.

I got involved because, a woman from work sent around an email, and it's close to my home. That, and three weeks ago they started another class particularly aimed at girls. So from 10am to noon, 30 or so 10-18 year old girls (and their parents/guardians) gather to learn how to write their own webpages. Then from noon until 2pm the mixed beginners class is run, and from 2pm to 4pm is the advanced class. There is a bit of a mix-up with the ticketing system that needs smoothing out (girls tickets, gen tickets), but other than that things seem to be going well.

Why start an all-girls class? After all the material isn't any different. They'd been running the mixed classes for a year, and had about four girls attending. The girls class started with about 35. Why? Perhaps it's about perception? No-one is particularly keen to do things if they feel they won't fit in. So if you tell them yes, this is for you, and there will be others like you, maybe they feel more encouraged to attend?

I help out with the two beginner classes, and after those four hours I'm a bit shattered, and keep missing out on the advanced class who do fun things like animation and node.js. Maybe once I get used to the routine I'll find the extra energy. It's inspiring to see the children getting excited over what they're doing. It's humbling to see the creativity just pour out of them so effortlessly. And it feels good to be able to help them when they get stuck. I'm looking forward to the coolest-project competition.
chebe: (Default)
After a year hiatus Maker Faire UK was back in Newcastle last weekend. This time around I was behind the stands with tog. Our base for the weekend was the large room dubbed 'Zone C' which housed "Giant Drawing Machines and UK Hackerspaces", and us. (We'll allow them that gaff, as otherwise we were made very welcome.) The other areas held sections like DIY Bio, soldering, robots, crafters, software, and even a long line that allegedly led to a laser game in the style of a jewel thief caper.



Luckily there were enough of us on the stand that we could duck out and have a look around. I took part in a taste survey and got my tastebuds counted (I'm in the super-taster range) in the DIY Bio section. In the soldering section they were running a workshop with squishy circuits. In the craft section they had robots that knit! There were also modified knitting machines that could create complicated patterns, and an accurate set of knitted and crocheted organs. I also found beautiful modern quilts and a Dazzle Dress made of high-vis and reflective materials. Bitmap Machine Knitting even crocheted EL wire with regular wire to create hats and bracelet-cuffs!

Pictures )


I met [twitter.com profile] rainycat and saw her EEG-pendant visualiser in action. I met [twitter.com profile] BobDotStone from the York hackerspace as he proudly showed off his 8x8 matrix tshirt. I even spied LEDs decorating a sombrero. Bare Conductive stopped by and kindly gave us one of their pen samples so we could have fun with it (we're thinking screen printing). Someone stopped by asking for advice on how to improve his touch-screen gloves and we gave him a piece of conductive fabric to try. This free sharing and helping is one of the things I really like about the Maker community. (For more of this sharing, and to see how much a duck is worth, take a look at the tog post.)



Lots of people seemed to enjoy our projects. [twitter.com profile] partfusion brought his giant Ardunio, and a collection of his LED displays and wearable pieces. I brought my 7x7 LED matrix top, my temperature sensing scarf, and the Starry Light (LED wind-'chime'). Different people liked different things, I had great discussions about how the problem was really with the batteries (it's so great to met people who understand), about research in the area, giving people ideas about different ways to utilise soft-circuits (and getting ideas back in return). I even met a teacher who was really excited about the whole thing, hoping to use it as a way to get the girls in his class interested in electronics! I was also impressed to meet a young lady who already knew about soft-circuits, and was more curious in how we programmed them. All in all I think the future is bright (and twinkly).

Pictures of our stand )

And of course MakerFaireUK isn't complete without purchasing so many books and kits that the weight-allowance on the flight home becomes a worry.



About the LED nametag )

Overall it was an exhausting, but fantastic experience. I'm still buzzed from all the compliments and new ideas. And can't wait to see what all these other makers do next.
chebe: (Default)


Work has been keeping me busy so coherent ... speech stuff ... is little beyond me at the moment. (I'm going to a grammar workshop on Saturday, maybe that will help.) So this will be blessedly brief.

Those are crepe-paper cherry blossoms at the top. I roughly followed this tutorial, only I lack a tree branch.

I've taken to learning how to needle-felt. Here's my first attempt at a rectangle in green wool, and conductive stainless-steel fiber.



I've also been experimenting with fusible fibers (and sheets) together with conductive fibers as well.



In tangential news we got a 3D-printer. I haven't logged much time with it yet but am looking forward to some of the translucent and UV-reactive plastics.



Finally, to conclude, I'm going to be busy this year attending all the things.

April, Saturday 6th. Anime Dublin (facebook twitter) Showing people how to make LED-flowers.

April, Saturday 27th - Sunday 28th. MakerFaire UK (website twitter) Helping out at the TOG hackerspace table.

June, Friday 7th - Sunday 9th. GaelHack (website twitter) Doing... something.

July, Saturday 27th. MiniMakerFaire Dublin (website twitter) Again helping out TOG.

July, Wednesday 31st - August, Sunday 4th. O.H.M. (website twitter) Trying to forget that I dislike camping.

Now to find the energy required to do it all.
chebe: (HandAgainstGlass)
I bought a touchatag ages ago, but couldn't get it installed properly under linux (and when I got it working under Windows the supplied software required that I create an account, which I really dislike). It's no longer available to purchase (except perhaps through resellers with old stock), but it is a RFID-tag reader (that came with a few RFID-tags) and was part of the 'Internet-of-Things' effort. Although anyone I know who has one didn't get it for that reason. It lay gathering dust in the back of my mind until I suddenly had a project idea. But first, I had to get the darned thing to work!

Here's how I went about it under Fedora 18.

Pre-requisites (you probably don't need all these, but I have ambitions);
yum install pcsc-*
yum install libusb libusb-devel
yum install libnfc*


Install the driver;
wget http://www.acs.com.hk/drivers/eng/ACR122_Driver_Lnx_Mac10.5_10.6_10.7_104_P.zip
unzip ACR122_Driver_Lnx_Mac10.5_10.6_10.7_104_P.zip
cd ACR122_Driver_Lnx_Mac10.5_10.6_10.7_104_P/
tar -jxvf acsccid-1.0.4.tar.bz2
cd acsccid-1.0.4/
./configure
make


Check it's working;
lsusb
Lists it as Advanced Card Systems, Ltd.

nfc-list
It should list your reader, if not, try pcsc_scan, if still no luck run pcscd -f.
If at this point it's complaining that your firmware is bogus you need to edit the config file to skip the version checking, for me the file path is;
vim /usr/lib64/pcsc/drivers/ifd-ccid.bundle/Contents/Info.plist

Locate "ifdDriverOptions" and turn the "0x0000" value into 0x0005 (0x0004 might work too). Save and exit, then restart the daemon. I had trouble getting it back up again, so I rebooted.

Run the checks again to see that it is now picking up the device properly.

Use it;
This varies greatly depending on what you want to do. One of the alternatives recommended on the touchatag site is iotope. I downloaded it (to run in standalone node mode), unzipped, and ran the bash script provided (it's Java based). Then you open a browser and go to http://localhost:4242/ui/. Then simply put a RFID-tag in the reader and (if compatible) see the details show up.


I pieced together this information from two sources;
1. An archlinux wiki page which suggests another application, and
2. A backtrack linux page that suggests an entirely different application and use.

This is probably old-hat to those of you it interests, but I've finally gotten it to work, so I'm putting it here against my forgetting in future.
chebe: (AsciiC)
Hello! Been a while. I have been starting things, just not quite getting around to finishing them... My friend Julie is on a mission to spread the joy of contributing to Open-Source Software. So this Wednesday just gone she organised a meet-up at the hackerspace to help new-comers get started. She gave a short talk (transcript here), and then we broke up into groups to get hands-on experience, in some cases finding, and in others getting started on projects.

I had great plans to finally get started on some Dreamwidth dev. I got my Dreamhack ages ago, but hadn't had time to do much with it. So I read up my wiki, logged into the account (miraculously remembering the passwords), and decided starting fresh would be the best. (When I wandered away things were still in CVS, they're now in github.) So I found the reinstall script, and ran it.

Don't. At least, not for a while. After following all the steps I could find I still had trouble; the system complaining about not being able to access the db. I logged into the dw-dev irc room to complain, and found out that the script is broken. Alas! My plans are on hold for another little while until the script is fixed up and I can get my Dreamhack working again. The hard part is waiting patiently. I think I've been bitten by the bug.
chebe: (Default)
I try to keep this blog about things that have gone right (or at least experiences I can learn from). As such, I would be remiss if I did not mention the night of talks we had in TOG last night. The topic ended up being Computer Games and Development, and it's one of those rare times when everything just went right.

Back in December I said to the other members, I've a speaker lined up, let's have a night of talks! December being so busy it got pushed out to January. Which is good, because January is so quiet, and devoid of interesting events. But then a wondrous thing happened. Julie and Becky said, hey, I know someone who might like to talk, and suddenly we had a topic and more speakers than we could fit in one night!

It's one of those examples of just how a hackerspace should work. One person starts something, others join in, and a location is provided. Easy as pie, an event happens. And this one was spectacular (if I do say so myself)! One speaker presented from an iPad, controlled by a phone. Another provided my first real life experience of Windows 8. One was part of a team that won a BAFTA. And we had possibly the largest audience yet, including possibly the youngest yet. All on top of the genuinely interesting presentations!

But personally, the icing on the cake was that of the six (excellent) presenters, four were women. In the area of computer games. It happened without thinking, without specific effort. It was simply that when people thought of others involved with computer games, these were the people they thought of. It's a small thing, but it makes me happy.

Julie made the point that we reaped the fruits of past effort; of going to all those tech events and cons, of making a point of seeking out other women in tech, that made this possible. (And to be fair, in this case it was mostly Julie's graft.) So this, is not only a fine example of a hackerspace working well, but also a good reason why women-in-tech events are important. They lead to great events!

Moving on, people are already talking about a 'next one'. Guess we'll have to do something about that :)
chebe: (Spools of thread)
You know what I need to stop doing in 2013? Thinking, gosh, what I need is to pick up another craft. Seriously, I have more than enough to be doing. But, during 2012 I picked up a little crochet. Tríona (of Science is Delicious) had the task of teaching me how to crochet. Multiple times, over and over.

The main plus crochet has over knitting is that the level of entry is much lower. I never quite got the hang of casting on (or off) in knitting, but crochet is much easier, it simply begins with a single knot!

But also having a project to work on gives the knowledge something to stick to. And so, crochet baubles!

Using a 5mm hook, and some mysterious yarn, the pattern goes like this;
  1. Start with a knot, leave a tail to work in later.

  2. Chain 6, work last into first chain stitch to form a circle.

  3. Chain 3, work last into the centre of the circle. Repeat to make eight loops, working the last/eighth loop into the centre of the first loop in the row.

  4. Chain 5, eight times, last one into first in this row.

  5. Chain 6, eight times, last one into first in this row.

  6. Chain 7, eight times, last one into first in this row.

  7. Check size against the bauble. If needed, chain 8, eight times, last one into first in this row.

  8. Start decreasing. So if added a chain 8 row, chain 7, then chain 6. Check size against bauble, continue as needed. (I find the final row only needs seven loops.)

  9. Cut a tail about the length of your forearm. (Work in the bottom tail now.) Thread the top tail on a large needle, and use it to catch each loop of the top row, and tighten to completely enclose the bauble. Knot and tie off.


Couple of pics )
chebe: (Default)
While I wait for LJ to let me log in again (to upload photos), or until I find a better alternative, I thought I'd share some more of the LED-matrix top code with you.

Here's version 2, with the SparkFun wearable keypad functionality added. Let me know if there's any problems, or if you'd simply like to discuss it.

(Version 1 post)
chebe: (Sewing Machine)
I made another bag! The last ones were so small I think I've over-compensated and have gone too much the other way. This one is a laundry bag from a project in 'A Bag for All Reasons'. I deviated a little from the instructions. The two-compartment design wasn't going to suit me; most of my clothing is darks and brights, with a handful of whites/pales/delicates. So I doubled up the internal divider to make a small third section in the middle. For the darks section I chose a black and grey striped fabric, and for the brights a nice colourful printed patchwork fabric. Then at the every end I got lazy, and instead of two parallel lines of stitching 5mm apart I used a twin-needle in one pass. It's mostly straight lines and different sizes of rectangles, which makes the cutting out easier (thank the rotary cutter), but makes the actual sewing rather boring (not even any seam finishes). The end product is approximately 50cm x 60cm, and fully lined. It's quite pretty and ultimately functional, good result!

Pictures! )
chebe: (StormyThoughts)
I came upon this post just before bed, and now am having trouble getting my ticking brain to sleep. These photos, reportedly the first colour photos ever taken in Ireland, are 99 years old. They represent some of the poorest people and places of that time, some of the furthest from Dublin, and some of those retaining most of the old native Irish way of life. These people were the neighbours of my ancestors; my grandparents' parents. Irish identity is a tricky thing, a nebulous thing. For so long the colonised, the Free State only 89 years old. The records of our recent past burnt in uprisings, the stone monuments of the ancient past strewn about the landscape. And in between only the stories. (This is a good podcast by the way, if you're interested in the old Irish stories.) Then out of the blue (I like to think of the internet as blue) comes these photos.

It struck me, looking at them, how many are doing something, associated with their craft. Which in turn reminds me of the Hands boxset of documentaries from the early 1960's about traditional crafts, with a focus on those dying out due to industrialisation. I come from a people that tell stories and make things. What with the nature of this blog and all, it just kind of resonates. And my, how the world has changed in a hundred years.
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