Projector as embedded system

[Meatball]

Hey everyone,

I just finished up finals, and I'm looking for a good summer project.

In short, I'd like to build a small diode - based RGB projector for the purpose of looping frames continuously, and independent of a PC. 100% duty cycle.

What I would like to do most, is display a string of text with a short message, or display something like atomic time - maybe with digits or with a projected clock face. It would be nice to just "plug in" a message, or a function and just let it run with nothing but power from the wall.

Where should I start to do this?

Will it come in the form of running LSX on several raspberry pis? Or are there methods to loop frames for as long as I want?

I've got C and assembly down, on embedded systems applications as well. But kind of hardware can do this?

Thanks for your help, all of it is appreciated!

Tyler

[james]

It only takes one Raspberry Pi to play a wave file.

It's also easy to write directly to a sound device in Linux.

[mixedgas]

Meatball, PM sent with links to starter schematic and code of AVR based system.

Steve

[swamidog]

you can play looped frames/shows directly from a microsd card in etherdream dac's. no need for a host computer.

Hey everyone,

I just finished up finals, and I'm looking for a good summer project.

In short, I'd like to build a small diode - based RGB projector for the purpose of looping frames continuously, and independent of a PC. 100% duty cycle.

What I would like to do most, is display a string of text with a short message, or display something like atomic time - maybe with digits or with a projected clock face. It would be nice to just "plug in" a message, or a function and just let it run with nothing but power from the wall.

Where should I start to do this?

Will it come in the form of running LSX on several raspberry pis? Or are there methods to loop frames for as long as I want?

I've got C and assembly down, on embedded systems applications as well. But kind of hardware can do this?

Thanks for your help, all of it is appreciated!

Tyler

[mixedgas]

RIYA micro will do it too, as a continuous loop. Mine is pretty good at it, and when you press the button on the back, it will go to the next loop on the micro SD card.

Steve

[swamidog]

good point. yes, the riya does a fine job of it.

one potential advantage for using the etherdream is you can control the the loop and scanning speed/positions wirelessly via OSC.

RIYA micro will do it too, as a continuous loop. Mine is pretty good at it, and when you press the button on the back, it will go to the next loop on the micro SD card.

Steve

[pschlosser]

@Steve

I wouldn't mind seeing those links and info, too.
I'm watching this thread with a similar interest.
I had little to contribute, so I didn't bother making a post, earlier.

[mixedgas]

@Steve

I wouldn't mind seeing those links and info, too.
I'm watching this thread with a similar interest.
I had little to contribute, so I didn't bother making a post, earlier.

I'm in Bozeman MT for work. When I get back to the hotel after work I'll send you the links.

Steve