The fbgrab script from the fbcat package looks like it should be able to do the same kind of screen capture as this script, but it doesn't seem to handle the pixel format on my device (the image is recognisable, but looks like it only got the red channel).
The fbgrab script from the fbcat package looks like it should be able to do the same kind of screen capture as this script, but it doesn't seem to handle the pixel format on my device (the image is recognisable, but looks like it only got the red channel).