IOT or Internet of Things is a hot topic! According to the experts everything will be connected to the internet and all our devices and their data will soon be just an IP address away from us. So where do you start if you want to explore the world of IOT? How about a simple Temperature, Humidity, and Light sensor for your basement.
Summer is here and being in the Northeast that means HUMIDITY with a capital HUMID. Many of us have some sort of de-humidification system in our basements. My workshop is in my basement and I have a small dehumidifier that keeps it nice a dry during these months. Despite the basement being humid it is also cooler than the above ground summer temps. I decided that I wanted to know how cool and how humid it can be and thus it became the inspiration for my first IOT project.
DHT11 sensors measure temperature and relative humidity and are cheap. Perfect for a first project. The DHT11 is not what I would call “scientifically” accurate but it is good enough to monitor my basement. While I was at it, I figured I might as well add a light sensor to know if I left the lights on. Another simple and cheap solution, all I need to use is a photoresistor.
Where to put the data became the next question. I could build a web server, but I wanted this to be simple so I decided to leverage a service called Thingspeak that has an API and will let me post and review the data from my IOT monitor.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.