this post was submitted on 31 Dec 2023
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Earth's axial tilt is 23.5°, COINCIDENCE? I DON'T THINK SO!!!
Seriously though, I'd be tempted to set it to 23.5° as a gag and tell everyone "Well, for full accuracy, you have to correct for the Earth's axial tilt..."
Keep in mind that the planet rotates, so the angle between the ecliptic and the screen has to be recalculated periodically with a cron job.
Should be easy to automate it completely with an arduino and a stepper motor.
Alright you crazy bastards. Go and make this a thing.
turns on display
There is a swirl displayed
Display starts spinning
"You're getting sleepy..."
Don't give governments any more ideas.
Make it and then sell it to my wife to give to me for a gag gift next Christmas.
Her budget for such a thing would probably be ~$100 if you need a target price point.
For this I would use a servo, not a stepper.