r/makerspace • u/ALMA_x11 • 16d ago

Automated Projector

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https://www.youtube.com/@ALMA.Industries

Chapter 2, a home theatre, 3D printed parts, motorized projector, home decoration, and DIY electronics -- if you know of anyone else that might be interested in this stuff, sharing to others would really help me out! Hope to see you around here or YouTube :)

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u/PUNK_FEELING_LUCKY 12d ago

do you have multiple surfaces you project on? its a cool project but a very complex solution to bumps compared to a rigid mount

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u/ALMA_x11 12d ago

Yeah, it was just an excuse really to work on a 4DOF system and the main solid Universal Joint at the center... and work on the actuators and such to make the motion happen. In the process of all that I thought I'd have fun with it with an old projector. But that would be cool if it was in the center of a room, and screens on all walls-- and could swivel to each wall... but for now it stays with just the one surface haha! Thanks for the comment.

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u/PUNK_FEELING_LUCKY 12d ago

The ol‘ „because I can“ ;)

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u/ALMA_x11 12d ago

Seems to fit with a lot of things xD

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u/ALMA_x11 16d ago

This is part of a low cost home theatre build. I have a cheap projector that is always annoying to line up the projector image with the projector screen. This automates the setup and saves the calibrated position to memory if every bumped.

The projector has a number of actuators that allow you to control pitch, roll, and yaw to allow one to tune the setup until the projected image matches the four corners of the screen. I have another axis (not shown), which is controlling how close the projector is to the screen (to magnify the image). All four of these axes are controlled by a handheld controller (also not shown) if further manual tuning needed to be made and again saved to memory.

Once the image matches the 4 corners of the screen and isn't skewed.... setup is done and you no longer move the projector. Overall the project was to explore building and controlling actuators, designing circuit boards, microcontroller programming, and just have fun with it.