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documentation
The official documentation for Raspberry Pi computers and microcontrollers (by raspberrypi)
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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.
You can output video (called DPI) from your gpio with the correct config settings. You would just need hsync, vsync, and 2 color bits (green for video, blue for intensity should give the best image, but feel free to play around with that). Next step it to use level converters, as hooking up TTL directly to the Pi will fry it. https://github.com/raspberrypi/documentation/blob/develop/documentation/asciidoc/computers/raspberry-pi/display-parallel-interface.adoc