The Raspberry Pi Hobbyist posted a new tutorial that shows you how to build your own pi powered weather station:
My latest Pi project involves creating a weather station in a way very different from most others. I will cover various parts of this project in my next several posts.
The most common way that a Raspberry Pi (or any other computer) is interfaced is via a pre-built system that has a serial or USB connection. This is the fastest and easiest way to do this. But what fun is doing things the way everyone else does?
I had an old weather station that was relatively cheap (less than $100) and did not have any drivers for Linux. I ran it on an old PC for several years, but it finally stopped working. The wireless part was never very reliable and it was a pain to keep replacing batteries. I was able to salvage the anemometer (wind speed) and rain gauge and hack them into my new system.
For temperature and humidity readings I use the AM2315 from adafruit. For barometric pressure I use the MPL115A2, also from adafruit. Both of the devices interface via the I2C bus. I have to give a plug for adafruit. It’s a great place to get parts to connect to the Raspberry Pi.
Featured Adafruit Products!
AM2315 – Encased I2C Temperature/Humidity Sensor: Finally we have an I2C-interface temperature & humidity sensor in a nice enclosed style. This sensor contains a DS18B20 temperature sensor and a capacitive humidity sensor. A small microcontroller inside does the readings and provides a simple I2C interface for reading the finished & calibrated output data. Especially nice is that this sensor is in a rugged case with mounting bracket, which makes it way superior to a normal PCB-mounted sensor. (read more)
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