What it is: the classic Internet of Things starter device, something that grabs temperature and humidity readings in my backyard every two minutes and uploads the data to a website over my home WiFi network.
Details: through a lot of trial and error (and lots of online research) I cracked the code of uploading an Arduino sketch to an
ESP8266-01 board. The sensor is a basic DHT-22 sensor and the data is uploaded to
a channel on ThingSpeak. The Google gauge at the top of this blog is an
HTML/CSS/JavaScript visualization object that draws the latest temperature from this
channel.
As usual, I started with everything on a breadboard, then built a prototype board (now at my dad's house in Sonora, CA uploading to the Adafruit.io site). Once I got the design nailed down I made a dedicated printed circuit board. I like my completed projects relatively tidy and able to be packaged.
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