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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.
An RTL-SDR antenna like this attached to your HA server running this add-on, and a few 433MHz RF temp/humidity sensors like this and this.
NOTE:
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