Archive for the ‘Uncategorized’ Category

Cool Thing of the Week — AGM & PCR Machine Hacking

Saturday, August 21st, 2010

OK, a quick and hurried update, since we’ve been a bit rushed in the last week with our second Annual General Meeting.

AGM #2

The results of the Board of Directors were announced.  The 2010/11 Board of Directors:
President:  Gavin Smith
Vice-President:  Terry Dawson
Treasurer:  Jeremy Apthorp
Secretary:  Kathryn Small
Minister for the Interior:  Chris Beckett
Ordinary members:  Bec Owen, Max Nippard and Kean Maziels
Big thanks to our previous board members Greg and Marcus, and we appreciate all your support over the previous year.
Lots of cool discussions were had, and we have many ideas for upcoming workshops and funding, etc.
Also, cookies were had!

PCR Machine Hacking:

We finally hauled our new PCR machine into the hackerspace and started tinkering with it.
It’s rather large. It took 4 people just to carry it into the space!
We’re still waiting for an exceedingly rare Mac compatible serial cable before we can use it, but we’ve powered it up and it seems to be working. I successfully burned my hand on the thermowell, so we know that’s OK!
Checking if the temp regulation is occurring
More updates to come!

Internet

Monday, July 19th, 2010

The space is now equipped with (sort of) high-speed broadband, so we’re no longer breathing through the drinking straw of a dialup-speed Unwired modem.

Installing the ADSL was an Adventure™. For starters, I had to wake up at 6.30am to get to the space by 8am, which was when TPG said was the earliest time the engineer might reach the house. I arrived with coffee and Subway cookies, and looked around for the phone socket.

Um. There wasn’t one.

I peered around the front of the house, and saw aerial cables from the nearby telephone pole (which I later found out were completely irrelevant — Foxtel or Optus cables). 15 minutes of searching for a torch later, I ventured under the house with a floodlight (overkill is what we do!). I traced the aerial cables to cables under the house (my hair collected about 40% of the cobwebs off the beams). There’s a 4-wire cable, but it’s been cut. Ugh.

Floodlight underneath the house

Half an hour later, the TPG guy shows up and crawls under the house with me to look for the cable. Eventually we found it, poking up into the board room with no socket on the end. He tests it, and to his great surprise (and my relief) it works. Clearly the line hadn’t been used for years, and for it to still be connected and working all the way through to the exchange is a small miracle.

TPG guy testing the connection

Somewhere in the junk room a Netgear modem was found, and a 12V/1A power brick stolen from the Linksys router. The modem was configured, and Internet was had.

And there were megabytes.

The Netgear modem

No longer will hackerspace-goers be plagued by the lack of data or the irritatingly long wait for Youtube videos! No longer shall we resort to our variously crappy 3G connections! At last, we are free!

Guide to Steampunking

Sunday, May 9th, 2010

Kathryn and I have spent the last couple of weeks in the lead up to our Steampunk Gear workshop compiling a document for people getting started with (what I hesitate to verb) Steampunking on a budget. We’ve started with a few images to inspire you, and we’ll be filling out the document with more techniques and ideas as we think of and/or research them. If you see something in your travels that you think should be included, don’t hesitate to add them to the wave (or if you don’t have wave, contact either Kathryn <secretary@robodino.org> or me <jeremy@robodino.org>).

Without further ado:


Robots and Dinosaurs — A Hackerspace, Mini Documentary

Sunday, May 2nd, 2010

A while ago we were visited by some student filmmakers who wanted to do a documentary on Robots and Dinosaurs for their Uni project.

It’s just got back, and (in addition to being awarded a high distinction) they’ve kindly allowed us to post it on the net.

Robots And Dinosaurs — A Hackerspace Documentary

Big thanks to Lucy, Doug, Hamish & Edwina for promoting our group for us. :)

Arduino Cheat Sheet V.02

Thursday, April 22nd, 2010

I really love cheat sheets. In a lot of cases they can take the place of an entire manual. So I was surprised, given its popularity that I couldn’t find a single-page reference for the arduino online.

I tried to make a sheet that captured all the things I hit the reference for while programming. What data type does the millis() function return? How long till that overflows again? How large can a long get? What baud rates can the serial handle?

Any other things you’d like to see added, send me an email and I’ll stick them on Rev 3!

Edit: Just did some minor mods suggested by people. Here’s V.02b

Small version. Use PDF for printing purposes

Arduino cheet sheet v02b (PDF)

Editable visio version on my website:

http://sites.google.com/site/mechatronicsguy/arduinocheatsheet

Robots and Dinosaurs Halloween Party & Movie Night

Sunday, November 1st, 2009

This Saturday we had our Halloween party and movie night.

We started off with talks on Iphone Programming, CNC machining and more.  We’ll continue these talks in future for all sorts of topics, so stay tuned.

As an Australian tradition, in lieu of Pumpkins, we had Mellon carving!

Watermellon Carving

Watermellon Carving

We’ve also got some more pictures up here:

http://www.flickr.com/groups/robotsanddinosaurs/

Tinkering — October 24th

Wednesday, October 28th, 2009

Had our usual weekend tinkering this Saturday.

Breaking News: We got our own Slurpee machine!

Some highlights:

  • Got a slurpee machine!
  • SuperProbe manufacture
  • Making the DSO kits we group-ordered
  • Made a prototype drumkit for future workshop stuff
  • Juggling & Poi practice

Member’s Projects: Bret’s Flight Simulator

Sunday, September 20th, 2009

This post is to describe a particularly epic piece of work by one of our members,  Bret. He’s built a full-sized flight simulator cockpit in his house! Here’s his description:

The simulator was inspired by a visit to a facility in the north of Sydney which maintains and operates some impressive aircraft (but it would be improper to disclose who that would be :-) )

During a flight in one of their sims, I began to abort a landing since it just wasn’t quite right, and the instructor gently told me that I’d make it in. Only afterwards did I consider what had happened. It was so realistic that my natural piloting sense told me I was at risk, and to get out of the situation as I had learnt (namely to make the engines make a lot more noise, and go around to have another go). My later realisation was that I felt so immersed in the experience that I was as good as flying a real one! So, what other response than to decide to build my own (albeit not quite so complex or expensive)?

The sim is reasonably closely based on a Boeing 777, partly because the www delivered me some sort of ok dimensioned drawings which I was able to work from. Also, the 777 is all glass cockpit, making the instrumentation easier to manage. Finally, the appearance of a 777 is quite close to a 747-400 so I can always make a change in the future if I need to! Boeing or Airbus? Well. knowing a good few Qantas engineering types, they tell me “if it’s not Boeing, I’m not going!”. Decision made!

Technically, the sim is MS FS2004 (FSv9) on one pretty grunty quad core machine, running the flight model and front window view, and the IO and displays for the various parts of the cockpit are shared between 3 other win PCs. Video is the limiting factor for a sim I have found, as long as the main flight computer can handle the “visual experience”. Various freeware applications interface the systems and the aim is to provide a close to authentic experience without ever needing to “touch” a PC, only via the normal aircraft interfaces.

The project started just after Christmas 2008, and progresses in fits and starts depending on how busy life is and what I need to buy next. It is intended to always have it flyable, so that I can’t lose interest!

Recent flights have been Sydney to London and return (flying at the same time as some friends going on holiday) and the weather that is “provided” is very realistic. I landed in thick fog in London (simland) and my mate told me a day later that the real aircraft had diverted to Rome because they wouldn’t be able to get into the real London. That made sense, because I pretty well found the sim runway by braille!

Tinkering — August 29th

Wednesday, September 2nd, 2009

More tinkering this Saturday.

Thanks to Jason for kindly setting up the Wifi & Router for the space. That should come in very handy for getting data sheets at 3am.

Adrian was testing out his project, the Servo Shield for the arduino, which will be capable of driving 16 simultaneously.

In other news the MakerBot printer has arrived! Next weekend we’ll be assembling it together.

Tinkering — August 22nd

Sunday, August 23rd, 2009

At it again with tinkering on the weekend.

Some highlights:

  • We made some ferrofluid demonstration cells and gave them away
  • Set up a MythTV box, which will come in handy for our movie nights.
  • Bec’s project of welding up some brackets for a planter
  • Troubleshooting a Behemoth of an  Oscilloscope, kindly donated by Kean