Open Source/Freeware Budget USB DAC

[cfavreau]

Hopefully it just starts out materializing then working as a point output device though. The other stuff can be added.

[mixedgas]

CARD DAC
USB
can play laser signals (both galvo and color in 24 bit)

Define 24 bit.

Steve

[cfavreau]

24 bit sound card/device ... do we really have to define it to the point or are you looking to point out something?

[drlava]

Well... I could place the AT91SAM part they're using on the Make board and we could burn it with the firmware they're using; then it would work with their development kit (which is easy to use, kinda like Arduino).

That would get us serious amounts of processing power (ARM is fast, much faster than the AVRs) and not a huge amount more cost. It also has onboard USB so that kills that problem.

Now that sounds good to me. It should keep the cost down that way. I haven't looked at the arm specs but adding ethernet to the layout is as simple as the socket, magnetics, and interface chip. Some ethernet sockets have magnetics built in. Programming for ethernet on the other hand, a bit more difficult By doing this it saves quite a bit over that board.

[mixedgas]

24 bit sound card/device ... do we really have to define it to the point or are you looking to point out something?

Point,is wav on cd distributes at 16 bits, I thought 24 bit was record stage only.

And right now we are depend on CM chip based sound cards. Sound card dacing is limited to those who can solder and or make the adapter boards, or find a friend to do so. So the X+Y of going open source is it is No longer sole source.

Steve

[jeejeedr]

Point,is wav on cd distributes at 16 bits, I thought 24 bit was record stage only.

And right now we are depend on CM chip based sound cards. Sound card dacing is limited to those who can solder and or make the adapter boards, or find a friend to do so. So the X+Y of going open source is it is No longer sole source.

Steve

I think they mean 1 channel for at least 8 bit Red, 1 channel for 8 bit green, 1 channel for 8 bit blue. This matches the 24 bit 'full' color images on computers.

[shrad]

I had the idea of making a simple coding algorithm to output graphical data out of a graphic card, as to have direct signal for X/Y on sync signals, and RGB on RGB signals

there should be a way, with custom resolutions and the correct algorithm, to output the data from ILDA frames directly to a video device so that the averaging of the signals would recreate the signals needed to display the frame on the projector

I don't know if this is understandable, but with the help of a framework like .NET and the newly released dev tools for graphical programming (direct GPU programming from nvidia and ATI), that would be awesome... we would then also benefit from direct3D, opengl, and any implementation of vertexes and so...

just a thought from me ^^

[keeperx]

yes i meant the sound card DAC can control the galvo's and handle 24 bit color (8+8+8)

[heroic]

I had the idea of making a simple coding algorithm to output graphical data out of a graphic card, as to have direct signal for X/Y on sync signals, and RGB on RGB signals

For a variety of technical reasons this isn't possible.

[mixedgas]

yes i meant the sound card DAC can control the galvo's and handle 24 bit color (8+8+8)

From a electrical engineers point of view, please do not refer to 8+8+8 as 24 bit color. That is marketing speak and wrong. The correct term for 8+8+8 is 8 bit RGB.

24 bit color in the context of this forum would be 24x24x24 = 37,778,931,862,957,161,709,568 possible colors. The over 16 million from 256x256x256 is enough.

Steve