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    <title>Health on smcleod.net</title>
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    <description>Recent content in Health on smcleod.net</description>
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      <title>Energy, Sustainability and Deployment Frequency</title>
      <link>https://smcleod.net/2022/12/energy-sustainability-and-deployment-frequency/</link>
      <pubDate>Sat, 31 Dec 2022 12:03:41 +1100</pubDate>
      <guid>https://smcleod.net/2022/12/energy-sustainability-and-deployment-frequency/</guid>
      <description>&lt;!-- markdownlint-disable MD025 --&gt;
&lt;h1 id=&#34;deployment--delivery-frequency&#34;&gt;Deployment / Delivery Frequency&lt;/h1&gt;
&lt;p&gt;I often end up needing to advocate for more frequent delivery/deployments with clients.&lt;/p&gt;
&lt;p&gt;There&amp;rsquo;s the usual benefits commonly discussed such as improved feedback, reduced risk, well understood processes, maintainable dependencies etc&amp;hellip; however &lt;mark style=&gt;what&amp;rsquo;s often missed entirely is how it relates to the health and sustainability of the team.&lt;/mark&gt;
&lt;/p&gt;</description>
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    <item>
      <title>MH-Z19 CO2 sensor reader, logger and visualiser</title>
      <link>https://smcleod.net/2016/12/mh-z19-co2-sensor-reader-logger-and-visualiser/</link>
      <pubDate>Wed, 21 Dec 2016 16:37:38 +1100</pubDate>
      <guid>https://smcleod.net/2016/12/mh-z19-co2-sensor-reader-logger-and-visualiser/</guid>
      <description>&lt;!-- markdownlint-disable MD025 --&gt;
&lt;h1 id=&#34;mh-z19-co2-sensor-reader-logger-and-visualiser&#34;&gt;MH-Z19 CO2 sensor reader, logger and visualiser&lt;/h1&gt;
&lt;p&gt;&lt;img alt=&#34;plot&#34; loading=&#34;lazy&#34; src=&#34;https://user-images.githubusercontent.com/862951/52826593-a98a5400-3115-11e9-868a-72a763b6d587.jpg&#34;&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Reads data from UART(serial)-connected MH-Z19 (or MH-Z14) sensor using python 3.&lt;/li&gt;
&lt;li&gt;If you dare to install nodejs you can visualise the logged data (using html and plotly.js library).&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;Repository: &lt;a href=&#34;https://github.com/sammcj/CO2-Logger&#34;&gt;sammcj/CO2-Logger&lt;/a&gt;&lt;/p&gt;
&lt;h2 id=&#34;usage&#34;&gt;Usage&lt;/h2&gt;
&lt;p&gt;&lt;em&gt;Note this post is from 2016, in 2021 I replaced my custom Co2 loggers with an &lt;a href=&#34;https://aranet.com/products/aranet4/&#34;&gt;Aranet4&lt;/a&gt;. While very expensive, is and excellent off-the-shelf solution, with many features.&lt;/em&gt;&lt;/p&gt;
&lt;h3 id=&#34;connection&#34;&gt;Connection&lt;/h3&gt;
&lt;p&gt;Sensor can be queried using 3.3v UART at 9600 bps. Sensor main feed voltage is 5v.&lt;/p&gt;</description>
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