marxy's musing on technology

A bloke with too many hobbies.

Sunday, April 06, 2008

Visualising WSDL with GraphViz and python

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I'm working with SOAP and WSDL at the moment and golly that xml can be hard to read. In the past I've used GraphViz to draw picture...
4 comments:
Friday, April 04, 2008

A visit to the Sydney Horological Centre

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Acting on a tip from a work colleague, I dropped in to " Smith & Smith " Pty Ltd, also known as The Sydney Horological Centre ...
Wednesday, April 02, 2008

Apple's weakness is Microsoft's strength

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Microsoft makes really great mice. Apple just can't seem to get it right. I've bought four "mighty" mice since the launch,...
5 comments:
Friday, March 28, 2008

80m Transceiver in an Altoids tin: Pixie 2

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Just built a nifty little kit, the Pixie 2 from KennComm , a company that sells some very interesting bits and pieces.. A nice little kit, ...
2 comments:
Wednesday, March 26, 2008

Harvesting parts from an inkjet printer

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Ever since I attended a workshop on stepper motors at Dural conducted by Peter VK2EMU I've been watching for the site of an inkjet print...
2 comments:
Monday, March 24, 2008

A Chat with Ben and Pete - Episode 20

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In this episode we chat about: Ben's Time Capsule experience OmniFocus 1.0.1 review Safari 3.1 Bicycle news from Ben (he didn't get ...
Saturday, March 22, 2008

Atmega8 audio oscillator

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Here's a simple sine wave audio generator. It generates a nice looking, and sounding sine wave by using a resistor A/D converter connect...
5 comments:
Thursday, March 20, 2008

Got AD9851 Direct Digital Synthesiser working.

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There's a lot of interest in ham radio circles around the new DDS chips which can act as a high stability VFO over a wide range with ver...
Saturday, March 15, 2008

ATMega8 driving HD44780 LCD

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Baby steps here folks. I've just got my Atmel ATMega8 to drive an HD44780 LCD using the 4 bit parallel interface. (Previously I've b...
1 comment:
Monday, March 10, 2008

A Chat with Ben and Pete - eposide 19

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iPhone 2.0 This week we talk about: About the podcast Change of name? Suggestions and Feedback? Perhaps we shou...
4 comments:
Sunday, March 09, 2008

PSK31 on 20m is becoming very active

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99% of my Ham radio activity is now on PSK-31. This interesting mode is very efficient and lets me chat, keyboard to keyboard, with interest...
Saturday, March 08, 2008

Atmel Atmega8 ICSP on breadboard

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Over the past year, I've given up on the PIC micros and have been getting up to speed with the AVR ATMega processors. My favourite is th...
3 comments:
Friday, March 07, 2008

Flashback to MacOS 9 - we've come a long way

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A sequence of computer hand-me-downs here left us with an old PowerPC iBook with no owner. Leopard won't run on it and I'm so in to ...
2 comments:
Tuesday, March 04, 2008

A seminar with Michael Reichmann

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I had the great pleasure of attending a seminar presented by the author of one of my favourite photo web sites, the Luminous-Landscape . Des...
1 comment:
Sunday, March 02, 2008

Enjoyed the local Model Railway Exhibition

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This weekend is the North Shore Railway Modeller's Association 36th Model Railway Exhibition at Forestville. I always enjoy these shows ...
Saturday, March 01, 2008

Listening to a satellite on a hand held receiver

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I've heard about the amateur satellites for years but never tried to listen in. I guess my assumption was that a directional tracking an...
Tuesday, February 26, 2008

A great low power FM transmitter

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Saw this little FM transmitter for the broadcast band on the Make Blog . I often want to listen to the Sunday ham radio broadcast but it wo...
4 comments:
Monday, February 25, 2008

A Chat with Ben and Pete - Episode 18

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WiFi Balloons! This week we talk about: Microsoft opening up? They’ve published the file formats for Office documents Now they’ve publishe...
2 comments:
Saturday, February 23, 2008

PSK-20 kit completed.. finally

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I ordered the PSK-20 kit, a PSK31 crystal locked transceiver for 14.070Mhz (the most active spot for PSK31) from SmallWonderLabs back in Oc...
2 comments:
Tuesday, February 19, 2008

Turned professional blogger

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An exciting day! I've just received my first ever payment from Google for AdSense revenue from my blog. Oh sure, it's only $12 but i...
Monday, February 18, 2008

A Chat with Ben and Pete - Episode 17

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A New Trend in Openness. This week we chat about: Follow up HFS: The Good & The Bad No More Tasting: It’s a Bad Year To Be a Registrar X...
1 comment:
Sunday, February 17, 2008

Wyong field day 2008

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Just returned from another excellent Wyong field day. I'm sure attendance is going up again - despite a rather threatening sky. This yea...
Saturday, February 16, 2008

Built a PVC pipe laptop stand

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I'm using a laptop at work and have been searching the shops for some contraption to lift the laptop up so the screen is at eye height (...
2 comments:
Friday, February 15, 2008

Another perspective on piracy

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Denis Price, owner of "The Picture Show Man" twin cinema at Merimula gave an insightful talk on ABC Radio National tonight, but I...
Wednesday, February 13, 2008

Sorry, now for the Republic

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Kevin Rudd said sorry today, on behalf of all Australians. It was moving. Went very well, I was impressed. Now it's time to address the ...
6 comments:
Monday, February 11, 2008

A Chat with Ben and Pete - Episode 16

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'Utter crap' headlines. This week we chat about: Peter’s MacBook Air Ars SSD MacBook air review Sub-standard displays in the Macbook...
1 comment:
Saturday, February 09, 2008

Built a better PSK31 interface box

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Started playing with PSK31 on my mac last year as reported earlier. As I said, I'm running the excellent CocoaModem software. Until la...
Friday, February 08, 2008

Wonderful documentaries by Louis Theroux

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Since I discovered this series, about a week ago, I've become addicted to the BBC series by Louis Theroux - "Weird Weekends". ...
Thursday, February 07, 2008

MacBook Air in Australia

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My MacBook Air arrived this morning. Shipped direct from Shanghai. I do love it - light enough to carry around every day but with a lovely f...
6 comments:
Monday, February 04, 2008

A Chat with Ben and Pete - Episode 15

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Microsoft! attempts! to! acquire! Yahoo!( sorry El Reg ) In this episode we chat about: Aboriginal archive offers new type of “DRM” BBC stor...
2 comments:
Thursday, January 31, 2008

NSW/ERG TCard project, what went wrong

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Like many who have worked on large software projects, I have been following the failure of the NSW State Government's unified transport ...
2 comments:
Tuesday, January 29, 2008

A Chat with Ben and Pete - Episode 14

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Musharraf is everwhere. In this episode we talk about: Disabling PT_DENY_ATTACH in Leopard Fixing ptrace(pt_deny_attach,…) : http://tinyurl....
5 comments:
Friday, January 25, 2008

Simple 40m Direct conversion (DC) receiver

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I'm very inexperienced at home building radio projects. Inductors, in particular, seem rather mysterious to me. Microprocessor projects ...
2 comments:
Thursday, January 24, 2008

A Chat with Ben and Pete episode 13

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Pete's ham radio holiday. This episode we chat about: The Coffs Harbour radio expo Apple cripples DTrace Mac OS X and the missing probes...
1 comment:
Monday, January 21, 2008

Coffs Harbout Radio Expo

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Attended the Coffs Harbour radio expo on Sunday. While a lot smaller than the Wyong field day I'm looking forward to in a few weeks, it ...
2 comments:
Friday, January 18, 2008

Currently on holiday at Coffs Harbour

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Might be a little slow to respond this week as I'm on holiday at Coffs Harbour. Catching up with some friends and family and most import...
Wednesday, January 16, 2008

MacWorld 2008 Keynote live blogging the live blogs

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04:22 (local time) Engadget seems down. 04:23 Techcrunch is doing a fine job, a wireless backup device. 04:24 Macrumourslive has a feed th...
4 comments:
Tuesday, January 15, 2008

A Chat with Ben and Pete - Episode 12

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CES, Wikia and more. This week we chat about: Low cost laptops. Has the OLPC project created a new category? Everex Cloudbook : http://tinyu...
Sunday, January 13, 2008

Free single sided ATMega8 PCB design

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Here at marxy.org I make printed circuit boards using the rather low-res iron on technique so I went looking for a single sided board design...
3 comments:
Friday, January 11, 2008

AVR Butterfly Mac experience

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I've been learning about the Atmel AVR microprocessors recently and ordered a very nifty little demo board called the AVR Butterfly . I ...
Monday, January 07, 2008

A chat with Ben and Pete - Episode 11

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Scoble’s fuss about Facebook and more. This week we chat about Facebook locking out Robert Scoble for trying to extract his contacts, using ...
3 comments:
Wednesday, January 02, 2008

Getting started with Atmel ATMEGA8-16

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I mentioned in a previous post that I've been interested in learning about the Atmel AVR microcontrollers. To get started I purchased a...
2 comments:

Amateur Radio NSW Home Brew meeting

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Here's some video from the ARNSW Home Brew meeting last night at the children's party room at McDonalds at North Paramatta. Hopefull...
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