
components
Hardware Components
Arduino nano
X 1
W5500 ethernet module
X 1
MLX90614 thermopile sensors
X 2
details
The theory
We could get in to the theory of blackbodies (maybe later), but it is sufficient to say that…
- Clouds are warmer than a clear sky.
- The infrared spectrum of an object can tells us something about its temperature.
- If you can measure the temperature of the sky, you should be able to say something about whether it’s cloud-free or not.
To measure the temperature we need some sort of contact-less thermometer that can be pointed at the sky (and ground, more on that later).
What you need
- 2x MLX90614 thermopile sensors
- 1x Arduino Nano
- 1x W5500 ethernet adapter
- a bunch of jumpers
- waterproof enclosure (I printed one)
- Some way to mount it over the ground
If you want to print out my housing, you’ll also need the following…
- A 3D printer (obviously) and weather-resistant filament (I use CPE/PETG)
- Silicone
- 1/4-20 nut
- tripod ball mount
Original link: http://orebits.ca/building-a-network-connected-cloud-sensor/
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