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Swap-File / portal-gun

Now you're thinking with portals!
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trouble driving the projector from the Pi #1

Open ec1oud opened 6 years ago

ec1oud commented 6 years ago

At some point this question caught my attention because I also wanted to drive a ShowWX projector (but not for a portal gun ;-) as simply as possible from a Raspberry Pi:

https://electronics.stackexchange.com/questions/78519/identiying-the-connectors-in-a-laser-pico-projector

and I still haven't solved the problem. So I wonder how much further you've gotten since your post about the portal gun, and if you could shed any more light (oops a pun) on that question, the projector's internals, or at least how to drive it reliably without a chain of adapters. Things I've tried: the very first RasPi with a HDMI->VGA adapter (640x480 is OK, but not higher); RasPi 3 with a Gert's VGA adapter (there is no resolution that will work); and RasPi 3 with the same HDMI->VGA adapter (640x480 or 720x480 work OK, but not 848x480).

Thanks for mentioning the Celluon PicoPro: that's very good news which I wasn't aware of, that somebody has put these things back into production and increased the resolution to boot.

Swap-File commented 6 years ago

I haven't used the ShowWX projectors for a few years so I don't know if I can help you with them much. I moved on to the Celluon PicoPro projectors (but they liked to overheat) and have since switched to the Sony mp-cl1 which have a fan built in and work rather well for my purposes.

I haven't found any way to lengthen the wiring on them, but then again I haven't tried. You might have better luck "separating" a Celluon Projector, they have a single plug separating the sections, just make sure to add some cooling. I don't recall the plug used on the Sony projectors.

Celluon: https://imgur.com/a/s17DY

Sony: https://imgur.com/a/LoUdi

Keep in mind both the Celluon and Sony projectors require a lipo battery to be installed during operation, I haven't found any suitable way to bypass that requirement. I think they have substantial internal peak current requirements during startup. The Sony projectors will kill their batteries if left unused for too long, if you get a unit that won't power up, remove the battery and then charge it external from the unit to help it along.