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GP2040-CE
Discontinued Gamepad firmware for Raspberry Pi Pico and other RP2040 microcontrollers supporting Nintendo Switch, XInput and DirectInput (by OpenStickFoundation)
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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.
No guide needed. Here's the repo: https://github.com/OpenStickFoundation/GP2040-CE There should be a diagram somewhere in the files showing which pin is for what.
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.