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electricui-embedded
Add communications functionality to connect your hardware to a local user interface.
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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.
It has an MIT licensed binary protocol that handles framing and checksums which works well over serial. There are several Arduino firmware examples in that repo.
NOTE:
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