ebay bonanza

Posted on 22 Aug 2010 03:06

desktop.JPG

My Ikea rack project is coming along decently. The rack itself is finished, and I am now working on panels for my spectrum analyzer and bench power supply. These will look very cool when they are done, but it is taking time to work through the right materials and fabrication technique.

in16.jpg

The real news today was the arrival of a batch of parts for my nixie tube counter project.

Nixie tubes use a relatively high voltage anode at ~200V. However they consume little current, so it is a simple matter to boost a more convenient voltage source up to the desired level. In this case the source will be the +5V from a USB serial adapter that will also power a microcontroller. A few days ago I got a DC converter module to do the job, which I promptly destroyed by wiring up backwards. The replacement arrived yesterday.

This was good timing, because the IN-16 nixie tube and the transistors I'll use to switch the digits on and off arrived today. There are a lot of steps to make an email counter out of all of this, but each step is pretty small. I'll be travelling next week, so it might be a couple of weeks before I can put it all together.


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I need a cheap tabletop rack

Posted on 14 Aug 2010 03:20

I like these DIY Ikea-based racks. There are a few different styles, but I like these "Rast"-based builds most:

ikea rast 19" rack


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Projects

Posted on 12 Aug 2010 10:24

Lots of activity in the Projects section.

I have a nice build of my animated Vacuum Fluorescent Display clock, and working build of my 2.4GHz spectrum analyzer.


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Welcome to my new website

Posted on 06 Aug 2010 02:20

The Wikidot software seems to feature most of the things I need for personal publishing, so I'm relocating here from Wordpress. It's hosted, it's free, and most importantly, the module system allows you to generate pages from queries.

I'll be gradually moving or aggregating content from my other sites to this one, but this should already be good enough to use. There are still a few rough edges so please be patient.

To do:

  • needs some template formatting
  • needs some overall color & layout

Regards,
Corey


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