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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.
Once that part was done, I'd look at the various home automation protocols, possibly even Homekit (https://www.espressif.com/en/news/ESP_HomeKit_SDK or https://github.com/younghyunjo/esp32-homekit).
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