Karl Uppiano

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Sunday, May 25, 2008

WxService Update Available
  • WxMonitor ow4j080515
    • Various maintenance updates.
  • WxService ow4j080515
    • Various maintenance updates.
    • Made the hygrometer sensor task a little more tolerant of HIH-4000 variations.

The datasheet for the Honeywell HIH-4000 (and its older cousins) indicate interchangeability of better than 10%, and stability of better than 2% per year. Personal experience indicates that neither interchangeability nor stability are within that range with the samples I have tested. This release relaxes the stability range checking to provide a wider range of calibration options. Please see my tech note "Calibrating the Humidity Sensor" for more information.

(download ow4j080515)

8:44 pm pdt


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Welcome!
This site is dedicated to my interest in engineering. I use it as a place to just put stuff "out there" for anyone who might be interested, as well as a job search tool. This page contains my engineering web log (to your left). Anything that seems timeless enough, or too involved for a log entry may get it's own page as a full-blown article. And, of course, my resume is here for anyone who might be considering hiring me to do something. Email me.

About Me
I have worked as a broadcast engineer, electronics designer (analog and digital) and software developer. I especially enjoy audio engineering, although I've been writing software for the last several years, since that's where the opportunities are in the Pacific Northwest (this is Microsoft country after all). I'm currently working as a Senior Staff Engineer -- Resume at another large independent software vendor in Washington State.

Futurama Web Site
(not my best side)

I majored in mathematics and physics in college. Other interests include music appreciation (baroque, classical and early romantic, ragtime, and 60's and 70's rock & roll), high fidelity audio electronics, meteorology and of course, computing hardware and software. I tend to think a lot like this guy.