But Adafruit does a lot of good for the open source community, not to mention developed the driver I used for the project, so throwing them $20 only seems right.īeyond the BME280, the other component of the station is the ever-popular Raspberry Pi. Two sensors naturally made the wiring and software twice as complex to support, so having everything in one chip is very convenient.įor this project I personally used the BME280 breakout board sold by Adafruit, though the cheap Chinese breakouts on eBay for 1/4th the price will probably work just as well. Older sensors I had looked at before, like the very popular DHT11, could only sense temperature and humidity a second sensor would be required to detect barometric pressure. The heart of this station is the Bosch BME280 sensor, which is notable for being able to sense temperature, humidity, and barometric pressure at the same time. For quite some time now I've been interested in tracking local weather conditions and uploading it to the Personal Weather Station (PWS) network operated by Weather Underground, but was put off by the relatively high price and proprietary nature of the compatible turn-key weather systems.Īfter doing some research, I found some documentation on Weather Underground's PWS API, and figured it wouldn't be too hard to come up with my own hardware/software solution for recording and uploading the data I was interested in.
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