From 846eb6e3e1b5b430d0e7519dcb67b9177ddf5682 Mon Sep 17 00:00:00 2001 From: Wesley Moore Date: Sun, 26 Sep 2010 17:19:40 +1000 Subject: [PATCH] Add weather station software post --- .../2010/09/weather-station-software.html | 37 +++++++++++++++++++ .../2010/09/weather-station-software.yaml | 13 +++++++ 2 files changed, 50 insertions(+) create mode 100644 content/technical/2010/09/weather-station-software.html create mode 100644 content/technical/2010/09/weather-station-software.yaml diff --git a/content/technical/2010/09/weather-station-software.html b/content/technical/2010/09/weather-station-software.html new file mode 100644 index 0000000..67dd41d --- /dev/null +++ b/content/technical/2010/09/weather-station-software.html @@ -0,0 +1,37 @@ +Two weeks ago when I [installed my weather station][install] I setup the wview +software to log the current conditions and generate and upload +HTML and graphs to [http://weather.wezm.net/][weather]. wview seemed like the +perfect tool for the job but unfortunately it proved unreliable, even with the +built in process monitoring. After a few hours of running fine it appeared the +HTML generation process would hang, preventing any further updates to the +website. + +[install]: /personal/2010/09/weather-station/ +[weather]: http://weather.wezm.net/ + +wview has a lot of functionality and thus a lot of code, which turned me +off trying to track down the bug. I looked around for +alternatives and found [Open2300][open2300], which is a core collection of +functions for communicating with a LaCrosse WS-23xx weather station and a set +of tools. wview logged its observations to an SQLite database, which seemed +appropriate for this application. There were tools in Open2300 to log current +conditions to MySQL and PostgreSQL databases but not SQLite. So last weekend +I spend some of the afternoon learning enough of the SQLite C API to add +such a tool. The result is in my +[git mirror of the Open2300 SVN repo][open2300git]. Once the SQLite tool is +tidied up a bit more I'll submit it upstream. + +[open2300]: http://www.lavrsen.dk/foswiki/bin/view/Open2300/WebHome +[open2300git]: http://github.com/wezm/open2300 + +Now I had a database of observations I needed to replace the HTML pages +that wview was previously generated. To do this I wrote a small +[Lua tool][weather-tools] +to query the database and output the results to a [JSON][json] file. The +JSON is used on the new [weather page][weather], which is largely populated +by Javascript and uses the [flot charting library][flot] to graph the +temperature history. + +[json]: http://www.json.org/ +[flot]: http://code.google.com/p/flot/ +[weather-tools]: http://github.com/wezm/weather-tools \ No newline at end of file diff --git a/content/technical/2010/09/weather-station-software.yaml b/content/technical/2010/09/weather-station-software.yaml new file mode 100644 index 0000000..b683434 --- /dev/null +++ b/content/technical/2010/09/weather-station-software.yaml @@ -0,0 +1,13 @@ +--- +title: Weather Station Software +extra: After trouble with the wview weather station software I built my own solution to log and publish weather conditions. +kind: article +section: technical +created_at: 2010-09-26 17:01:00 +keywords: +- weather +- station +- wview +- open2300 +- software +short_url: http://bit.ly/9Sf8Lu