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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The most fun things I did with mine was reading power meters of my neighbors (https://github.com/bemasher/rtlamr) and planes flying nearby (some secret planes didn't broadcast signals though, probably FBI)
don't forget about car tires TPMS.... https://github.com/jboone/tpms
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