Recommended · for beginners
Intergalactic supercomputers for all (Not CGI)
Why people recommend it
Big Clive's blinking LED panel build, linked as the inspiration for people making their own flashing light displays and as a fun beginner project.
Watch for: Mind the power supply when scaling up the LED count
In their words
I am building one of those LED "supercomputer" panels around this power supply.
AlphaSixSierra on electronics.stackexchange.com, May 2023. CC BY-SA.