The SimpleJoy series is an excuse for me to make more retro joysticks, but with an emphasis on the basics, with a minimal amount of parts required, no supports needed, print in place, easy click together construction and not too high on the filament usage.
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For my second one, here is my take on the early Atari series.
No fancy flightstick-like grip here, just classic 2600 chunky without the dodgy dome switches, replaced instead with a reassuring click.

Whether you wire the joystick up straight to a D plug or use a pi zero encoder, I would suggest wire-tying the incoming cable to the loop on the inside of the base, and maybe as an extra step, a bit of hot glue to anchor things down.

Links to wiring information regarding the 9-pin D plug:

https://en.wikipedia.org/wiki/Atari_joystick_port
http://wiki.icomp.de/wiki/DE-9_Joystick

Re: encoders, I have been using RP2040 zero boards, drag & drop some files onto it:
https://github.com/OpenStickCommunity/GP2040-CE

I printed using basic pla, 10% honeycomb for the Base & Top and 5% rectilinear infill for the rest. The Grip is to be printed upside down, if your bed isn't very grippy, I recommend a brim.

The Empire Strikes Back on the VCS was wonderful, like being IN the movie :)

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