gerry's blog

Image mosaic QR codes

07 Jul 2011
Posted by gerry

One of the guys at tog mentioned in a recent post to the mailing list the idea of using a photo mosaic to make up a QR code, as opposed to the usual black on white that we see everywhere.

To see if it works, I created one, and it appears that it does. Not sure about the thresholds of size and contrast though, as this is just a proof of concept, rather than an exhaustive study.

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Open StreetMaps

23 Mar 2011
Posted by gerry

Open StreetMaps is a worldwide collaborative effort to create a high quality, unencumbered street-level map of the world. When I first came across it, a few years ago, Co. Galway was almost unpopulated (with mapping), and Galway city extended as far as Moneenageesha.

Things have changed, however.

On Marlow's suggestion, I downloaded a daily Garmin build of the Ireland map and installed it to SD card for use on my Nuvi.

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Posted by gerry

I will be conducting an Asterisk workshop on Thursday evening, August 19, 2010 as a part of Irish HackerSpaces week. The workshop will cover installation of Asterisk (as Trixbox), connection to a SIP trunk provider, connection to an IAX peer, set up of SIP clients and configuration of some of the many features Asterisk offers.
We have selected Blueface as the trunk provider. 

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Posted by gerry

Galway has a new HackerSpace.

Going by the name 091labs (from the dialling code for Galway, 091) a HackerSpace has recently become active in Galway in the West of Ireland. I have yet to visit, but am very excited that we finally have our very own HackerSpace...
Further details from the 091labs site: http://091labs.com/ or their twwiter feed: http://twitter.com/091labs

I look forward to visiting the labs soon.
Best of luck!!

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Posted by gerry

I am currently building a house, and as such, have a great platform for implementing all the things I have dreamt of but could never manage to achieve in a rented house. Apart from finally having the spaghetti finally embedded in the walls and floors, and having almost enough power and network sockets (you can never actually have enough, right?) I can experiment with centralising control of the house and accessing home telemetry through my phone.

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Posted by gerry

Over the last few weeks, the Galway VHF Group has been testing and putting the final touches to our APRS Digipeater.

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Posted by gerry

Since I qualified for a free upgrade to a Pre, I decided to get one.
My initial impression is that it is a small phone, compared to my previous iPhone 3G. The keyboard is small, but very usable... not as good as the one on the Treo 700w I had about a year or so ago though.

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APRS

04 Sep 2009
Posted by gerry

APRS is often misunderstood to mean Automatic Position Reporting System, when, according to creator Bob Bruninga, WB4APR, it actually stands for Automatic Packet Reporting System. Some might maintain that the primary purpose of APRS is vehical tracking and service position reporting, and, while this is not entirely untrue, it does sell short the possibilities of this excellent technology.

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Posted by gerry

The WA1ZMS Trans-Atlantic beacon/transmitter project has had a recent upgrade to
its operation.

Technical Description:
QTH: FM07fm at 4200ft AMSL
Antenna: 2 6ele yagi stack aimed at 60 degrees to Europe
ERP: 7kw!

From Brian Justin, WA1ZMS/4...
---
A land mobile grade base station VHF exciter is used and the 25w driver PA is
keyed for CW modulation. The exciter utilizes a 10MHz frequency reference with
is derived from an HP-Z3801A GPS frequency standard. The TX frequency is

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Posted by gerry

Full Article at Silicon Republic
I have to be honest when I say that this does not inspire confidence. Neither the HSE, nor Eircom has shown themselves to be leading lights of security and disclosure, preferring a more reactive approach of spin in the face of obvious breaches and slips.
It remains to be seen how this plays out, but I, personally, am not expecting any major diversions from form.

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