Open Street Map Hack Day

TOG is hosting another OpenStreetMap hack day/meet up/barcamp! OSM members will meet up in Dublin and do open street mappy stuff on laptops in TOG. Like an indoor mapping party / hack day / social meet up / barcamp.

What is OpenStreetMap?

OpenStreetMap is a world wide, open content map. It’s Wikipedia meets Google Maps.

If you’d like to learn more about OpenStreetMap, come along! Want to start mapping your local area, and want help? Come along! Want to find out how to use the low level OpenStreetMap data? Come along! This event is open to all, TOG members, non-TOG-members, general public, hardcore OSM mappers, and OSM newbies.

If you’re an OSM mapper and would like come, but not sure what to do, don’t worry we have loads of townlands to map. :)


The event is scheduled to run from 12noon until about 6pm on Sunday 25th May 2014. However there is not a fixed schedule so feel free to drop in or out whenever you want.

There is no charge. The event is open to TOG members and the general public. Rory is the point of contact for the event. We’ll probably go for some beers or something that evening. You aren’t required to bring anything, but that will limit what you can do. I’d suggest bringing a laptop or something. TOG has free wifi.

TOG & OpenStreetMap

TOG has hosted a mapping party, held talks about OSM and hosted a previous hack day in March 2014.

Introduction to the Julia Language

Julia_(programming_language)_logo (1)Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments such as MATLAB.

The workshop will cover the basics of Julia (basic operations, Data objects and control statements) , and only basic coding experience is required for it. Then we will be using it to tackle some numerical computation problems (i.e. Project Euler Questions). As it’s an opensource language, all you need to participate is a laptop with Julia studio installed (or the language and your favourite editor).

The course will be run by Kevin O’Brien who is an experienced R instructor and has run classes with us before on R and ggplot2.

The workshop will take place from 4pm to 6pm on Saturday May 24th. The cost will be €10 for non members, with all proceeds going to supporting TOG.
If you would like to sign up, please complete the form below.
Continue reading “Introduction to the Julia Language” »

Artek Circle

image3015Artek Circle is a new event to get designers, artists and engineers working together in new and integrated ways. The idea is for the participants to create new work / objects that is more that the sum of its parts though collaboration with each other.

The event is over two days from the 10th-11th May 2014, in the Project Arts Centre, Temple bar. We are delighted to be hosting the late night hack session of the event. For more information and sign up check out

Some images from 1st TOG photo exhibition

And breathe..

Huge thanks to everyone who came along to the first TOG photographic group show in Hendron’s Collider. Much stress, much fun, (too) much wine… For those who didn’t make it, here are a few images from Eadaoin’s Facebook Gallery. LOADS of images floating about, which I’ll collect and put in a full gallery soon.

I’m hoping to run the whole 10 week concept to exhibition cycle again soon. Watch this space..

Eadaoin Ryan Impressions

Eadaoin Ryan Impressions

Gary Cooke You Are Here

Gary Cooke You Are Here

Olga Klimovich Waves

Olga Klimovich Waves


Olga Klimovich Waves (detail)

Olga Klimovich Waves (detail)

JJ Worrall The Little Man Knows All

JJ Worrall The Little Man Knows All

Tracy O'Brien Sculptured Curves

Tracy O’Brien Sculptured Curves

Jane Friel By The Sea (detail)

Jane Friel By The Sea (detail)

Jane Friel By The Sea

Jane Friel By The Sea







Printing printer parts

TOG’s laserjet printer was mostly working, but the two buttons on top were stuck and unusable. Each button was supposed to have a little right-angled lever connecting it to its microswitch. The problem was that one lever had come out of its mounting, and the other one was missing altogether.

Button mechanism removed, showing where the missing lever should be.

The large button has its lever; the small one doesn’t.

Missing. Gone. Not rattling around inside the printer, or sitting in a corner of the classroom. Just gone. But we have one lever left. If only there was some way we could make a copy of it…

The part is composed of a few straightforward shapes which were modelled in OpenSCAD.

Part, sketched diagram and calipers.

Measuring the part for modelling.

OpenSCAD screenshot

Building the model in OpenSCAD.

Then the design was printed on the 3D printer.

3D printer head and half-finished print.

Printing in progress.

The first print didn’t work because there was too much of an overhang. The second, improved design didn’t stick properly to the bed (small fiddly prints benefit from a brim). The third one came out nicely.

L-R: original part, two failed prints, successful print

The learning curve.

After cutting away the brim and overhang support material, the new part fits under the button…

Same button mechanism, now with two levers.

Good as new.

… and the printer buttons are working again.

Grubby, but working, printer buttons.

Printer buttons working again.

(And if your HP2200dn has also lost its button levers, the STL file is up on Thingiverse.)

May Book Club

The next meeting of the TOG Book Club is 7:30pm, Friday 30th May 2014, and we’ll be reading Embassytown by China Miéville

The plot of the novel surrounds the town of Embassytown, the native alien residents known as Ariekei, their Language, and the human interaction with them. The novel was well reviewed and won the 2012 Locus Award for Best Science Fiction Novel.

Big thanks to everyone who came to our April Book Club and read The Quantum Thief by Hannu Rajaniemi.

All are welcome to come and chat about the book (members & non-members).