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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.
Take a look at https://github.com/ErroneousBosh/slttblep for an example of an anti-aliased sawtooth on an Arduino. Since you're using an 8-bit Arduino you can't really multiply and can't divide at all, so you have to use the titular Stupid Lookup Table Tricks to "divide" by multiplying by a reciprocal, and use a precomputed table for the function that "smooths out" the step.
NOTE:
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