I’ve been experimenting with your tool and it works perfectly.
To create the animated gif, I made a patch in Max/msp using some noise and fractal generators,
and then export everything to a 8x8 video.
Here’s my workflow, maybe can be useful to share it, to help unexperienced people like me:
(I’m on OSX but you can find GIF-able programs easily on pc,
like Ulead GifAnimator or Adobe ImageReady with CS2)
1- First step: get the video you want to put in the matrix (oh, really?) ,
note that, given the low resolution, it can be challenging to find something that renders nicely on a 8x8 matrix…
2- Then using Graphic Converter (good old app from the 68000 MacSE times and still kicking ass!!!)
you can convert the movie to a gif:
It’s really easy, and you can also scale and apply image transformations to all-frames at once.
Just open the .mov file, go to window->movie and convert movie to gif frames.
Then save the gif with all the options in the save window deselected, just plain gif.
3- Use Dave’s great Processing applet and get the .c file., or the .h file if you’re using rainbowconverter0.3.
4- Finally paste the .c code in the data.c file, inside the “animdemo.pde” Arduino sketch,
(or just link the created .h file in the main sketch if you’re using the rainbowconverter0.3)
and upload to your rainbos.
Note that you can’t upload more than about 100 frames, due to the 16kb memory of the AT168.
To gain some Kb, you can strip out from the animdemo.pde and data.c files
all that is not necessary for the frame animation:
I2C WIRE library, numbers and chars definitiions,
I think I got almost 11Kb space to store frames now.
I can go from video to matrix in less than 30 seconds,
and that’s really something I would have never managed to do without your help,
thanks a lot Dave!!!
One big limitation is the flash memory of the ATMega chip in Rainbowduino:
with 16Kb I can store about 100-120 frames, that’s 3-4 seconds of video.
For the next editions of rainbowduno, please put a bigfatass micro, at least a 1280,
with 128Kb you could have about 30" of video… the 10$ would be worthwhile for me.
Another solution would be to pass the images from Arduino via I2C bus,
as referred in the rainbowduino manual, but I need some enlightment to accomplish this:
this guy ThreeFN is making a replica of the DaftPunk helmets, and has implemented the frame-via-I2C shit,
making some modifications to the I2C Wire library I think:
He says he can get 20fps via I2C due to the 100kbs bus limitation, but there’s a way to get fullspeed 400kbs.
Anyone feels like making a public and commented code to accomplish this fullspeed frame-via-I2C?
it would be sweet!
THANKS A LOT for all your help,
all the best,