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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.
I can’t tell where the sound is coming from exactly (it sounds like the battery), but there isn’t much on the board: https://github.com/PiSupply/PiJuice/blob/master/Hardware/README.md
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