Posted by gerry

I have in a number of past lives, been a Web Developer. I have also done my own hosting, such as it is, using such services as Rackspace, AWS and various VPS providers. However, this has had a number of negative impacts... generally involving incomplete migrations and lots of stale accounts just consuming money but not doing much actual work. So, since I only host about 10 sites now, and most of these for friends rather than customers, I decided to consolidate my hosting to one or two instances and close down a bunch of stale, expensive hosting packages.

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Building the PiDP8/I

23 Jul 2015
Posted by gerry

The story leading up to this can be read here. In short though, I have always had a thing for retro computers, and DEC boxes in particular, and now I have a remake of a PDP8/I in the form of a kit provided by Oscar Vermeulen another retro computing geek with an excellent site at Obsolescence Guaranteed.

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Posted by gerry

I have always been a fan of DEC minicomputers... 
I grew up in Galway, Ireland... often seen on the front panel of PDPs instead of the more common Maynard, Massechusetts, since DEC had a manufacturing plant there until the late 80s. 

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Posted by gerry

Having been emboldened by a successful conversion of my Thrustmaster F22 Flight Stick, I decided to try to capture all of the buttons on throttle too. A job that worked out easier than I expected as it turned out.

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Posted by gerry

Having done some more research, it turns out that the chips in the handle are not MCUs, or at least not all MCUs. A few are shift registers, and, according to this post, talk SPI. The post also has a bit of code to capture the buttons.So, despite having the matrix all built, if I can just use a Teensy and build on that code, all the better.

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Posted by gerry

During HF field day 2010, I had occasion to get some experience with the off-centre fed dipole, in this case, a commercially made unit from Buckmaster.
Prior to this, I had heard that OCF dipoles ‘are a compromise’, ‘are noisy’, ‘are deaf’, ‘have wildly varying radiation patterns’ and many other negative comments. During field-day, our experiences definitely gave me cause to doubt the nay-sayers.

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Posted by gerry

The DDS and related clock generation circuitry has made possible high accuracy, broad-banded programmable VFO functionality for very little money. Analogue Devices' AD9850 series offer HF frequencies for about 5. Higher frequencies can be had for not much more money, with the Silicon Labs SI570 with its near GHz maximum frequency offering the highest.

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Posted by gerry

I recently started using Arch as my primary distribution on my laptop. I made this change for a number of reasons... mainly that I did not like the direction that Ubuntu was going in, and I kind of missed the hands-on approach I had experienced with Slackware and Debian.  I wanted to recapture the control that first drew me to Linux nearly 20 years ago.

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Posted by gerry

The Eircom D1000 Zyxel Router

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Posted by gerry

The Galway VHF Group Amateur Radio club has been doing some improvements on the APRS network around Galway. This includes adding a weather station - EI2GCP-2  - and renaming the digipeater to EI2GCP-10, and adding iGate functionality.

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