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blog/2016/08/31/esp8266-and-micropython-part2/index.html
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<time datetime="2016-08-31T04:17:25+00:00" pubdate data-updated="true"><i class="icon-calendar"></i> August 31, 2016</time>
<span class="byline author vcard"><i class='icon-user'></i> Fabian Affolter</span>
<span><i class='icon-time'></i> three minutes reading time</span>
<span><i class='icon-time'></i> four minutes reading time</span>
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@ -122,7 +122,7 @@ So, part 1 of <a href="/blog/2016/07/28/esp8266-and-micropython-part1/">ESP8266
<p>Beside <a href="https://en.wikipedia.org/wiki/POST_(HTTP)">HTTP POST</a> requests, MQTT is the quickest way (from the author’s point of view) to publish information with DIY devices.</p>
<p>You have to make a decision: Do you want to pull or to poll? For slowly changing values like temperature it’s perfectly fine to wait a couple of seconds to retrieve the value. If it’s a motion detector the state change should be available instantly. This means the sensor must take initiative.</p>
<p>You have to make a decision: Do you want to pull or to [poll](https://en.wikipedia.org/wiki/Polling_(computer_science) the information for the sensor? For slowly changing values like temperature it’s perfectly fine to wait a couple of seconds to retrieve the value. If it’s a motion detector the state change should be available instantly in Home Assistant. This means the sensor must take initiative and send the data to Home Assistant.</p>
<p>An example for pulling is <a href="/components/sensor.arest/">aREST</a>. This is a great way to work with the ESP8266 based units and the Ardunio IDE.</p>