20 lines
2.2 KiB
HTML
20 lines
2.2 KiB
HTML
<article>
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<h2>ESP8266 with DHT11 and LCD Display</h2>
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<i>5 August, 2019</i>
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<p>I had fun putting together a simple electronics project over the weekend: NodeMCU dev board (ESP8266) with a DHT11 temperature and humidity sensor and DF Robot RGB LCD display.</p>
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<figure>
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<img src="/static/computers/esp8266_temp.jpeg" alt="Black and white photo in portrait orientation showing electronics on a striped table-cloth. A NodeMCU dev board appears in the lower-right, DHT11 sensor in the top-left, and an LCD in the top-right. Text on the display reads: temp: 18.0 and humidity: 64. The display is propped-up by a white pyramid (mycelium) and a wooden floor is just visible in the background." style="width: 100%;" />
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<figcaption>The basic setup.</figcaption>
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</figure>
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<p>The code is quite simple: connect to the local WiFi network and create a UDP server. Respond to UDP requests on port 3210 with a temperature and humidity reading from the sensor. Write the temperature and humidity to the display every two seconds.</p>
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<p>Arduino (C++) code: <a href="https://github.com/mycognosist/esp8266_dht11_udp">mycognosist/esp8266_dht11_udp</a></p>
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<p>I’ll be using this setup to monitor environmental conditions in my cultivation space. I plan on doing another version with LoRa for the main lab up the road. Will be great to do some remote-sensing from the comfort of my living room.</p>
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<p>One thing you can’t see in the photo is the sweet pink pastel backlight. I’d been thinking about lunarpunk aesthetics (thanks to a post by @Jackalope) - and, in particular, how I associate pastel tones with lunarpunk. I wanted to try out pastel colours on this display and ended up checking out the Wikipedia entry on Pastel (color). Lo and behold, it mentions:</p>
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<blockquote cite="https://en.wikipedia.org/wiki/Pastel_(color)">
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<p>There is also a type of goth style called pastel goth which combines the pastel color palette with classical goth fashion elements.</p>
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<footer>- <a href="https://en.wikipedia.org/wiki/Pastel_(color)"><cite>Pastel (color) Wikipedia page</cite></a></footer>
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</blockquote>
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<p>I did not know that. Rad.</p>
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</article>
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<hr>
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