Hello,
This might sound really stupid, but I was just thinking earlier about how a monochrome laser projected display would be for certain instances.
I was bored, and wasting time looking at youtube videos.
Some amazing projects for sure.
All of these raster scanning laser projector projects all have the x mirror and y mirror, spinning, to move the laser light across the screen, down a pixel, across the screen, down a pixel, etc, over and over to put the image on a screen.
My question is this; for a simple cheap monochrome display, is there a simpler way to do this than super expensive electronics?
Is there a chip or microcontroller that can just dump "1"s and "0"'s out a pin fast enough to support a high enough bit rate?
For example, if the screen was 1920x1080, that would be 2,073,600 bits. At a 24 frame per second refresh rate, that would be 49,766,400 bits pushed from memory to an on/off pin every second.
There would be a trigger from the x mirror position, so that top left corner is a fresh frame. From there, the video memory would dump the first 1920 bits, then wait for a y trigger signal that the y mirror is lined up to the left again.
So the chip or microcontroller would hold a 2,073,600 bit video memory.
If reset pin is set on, it would prepare to send data from memory location 0.
If the horizontal pin is triggered, it would send 1920 bits of data to the laser. Next time the pin is triggered, it would send the next 1920 bits of data to the laser.
So the reset pin would trigger from the vertical mirror, lined up at the top of the screen would start dumping the image data from memory location 0.
The horizontal pin would be triggered by the mirror being lined up to the left of the screen.
It would raster cast an image of whatever is in the memory.
Also, the memory would need to be modified on the fly as well, without interrupting the video rendering.
Is there anything that would do this, and for cheap?
It's not like the world is crying for monochrome laser projectors or monitors, but I thought it could be a really fun and cheap.
This might sound really stupid, but I was just thinking earlier about how a monochrome laser projected display would be for certain instances.
I was bored, and wasting time looking at youtube videos.
Some amazing projects for sure.
All of these raster scanning laser projector projects all have the x mirror and y mirror, spinning, to move the laser light across the screen, down a pixel, across the screen, down a pixel, etc, over and over to put the image on a screen.
My question is this; for a simple cheap monochrome display, is there a simpler way to do this than super expensive electronics?
Is there a chip or microcontroller that can just dump "1"s and "0"'s out a pin fast enough to support a high enough bit rate?
For example, if the screen was 1920x1080, that would be 2,073,600 bits. At a 24 frame per second refresh rate, that would be 49,766,400 bits pushed from memory to an on/off pin every second.
There would be a trigger from the x mirror position, so that top left corner is a fresh frame. From there, the video memory would dump the first 1920 bits, then wait for a y trigger signal that the y mirror is lined up to the left again.
So the chip or microcontroller would hold a 2,073,600 bit video memory.
If reset pin is set on, it would prepare to send data from memory location 0.
If the horizontal pin is triggered, it would send 1920 bits of data to the laser. Next time the pin is triggered, it would send the next 1920 bits of data to the laser.
So the reset pin would trigger from the vertical mirror, lined up at the top of the screen would start dumping the image data from memory location 0.
The horizontal pin would be triggered by the mirror being lined up to the left of the screen.
It would raster cast an image of whatever is in the memory.
Also, the memory would need to be modified on the fly as well, without interrupting the video rendering.
Is there anything that would do this, and for cheap?
It's not like the world is crying for monochrome laser projectors or monitors, but I thought it could be a really fun and cheap.