A year ago I started to work with Raspberry Pi and try to build different devices and develop software for it. One of interesting projects at least for me was building a weather station. I was inspired by John M. Wargo’sarticle. However I decided not just make another copy but add some additional functionality, outdoor waterproof and code improvements, including dew point calculation and exception logging.
One more important fact is availability of Astro Pi Sense HAT. The HAT stacks on top of the Raspberry Pi and has the following hardware capabilities:
Temperature, humidity, and pressure sensors
Accelerator, gyroscope, and magnetometer
8×8 full-color RGB LED display
Another big plus is Weather Underground (WU) letting you set up your own station and upload your data for others to use; your data becomes part of the aggregate weather data, and you (and your neighbors) can view your station’s data separately as well.
I decided to extend usage of the HAT. I used its LED display to show different styles: arrow, digits and filled square. I also used joystick to switch between different data (temperature, humidity, pressure) and various styles for each data entity.
I also improved outdoor usage of the project by introducing completely waterproof case, bought on ebay and adding cooling system (if needed or just simply adjust temperature results).
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