-
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.
The Arduino has the built in tone() function that can make any frequency of sound incuding note scales. Sophisticated use of things like this have let people make music and all kinds of sounds. The Mozzi Library is also an amazing way to get sound on an output pin.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.