[hackerspaces] Cool projects for TEDx talk wanted
jan at das-labor.org
Tue Oct 30 13:05:56 CET 2012
On Tue, 30 Oct 2012 01:39:47 -0700
Mitch Altman <maltman23 at hotmail.com> wrote:
> Anyone have any project (or know of any project), that has a photo
> that would impress non-hackerspace folks, and help the world take
> notice of hackerspaces? If so, please send me a photo I can use, and
> a short description of the project.
A member of das Labor made a rotating LED display. It's a bit old by
now (It was displayed it at 27C3), but still pretty cool.
There is a video on youtube and some pictures can be found
here as well as here.
Some technical details:
244 LEDs -> 512 pixels in diameter
Xilinx Spartan FPGA
Possible video source:
640 X 480 max 100 Hz
800 X 600 max 100 Hz
1024 X 768 max 100 Hz
1280 X 1024 max 60 Hz
The data transfer is realized via magnetic induction just like a
transformer with the difference that the secondary winding is rotating.
The Data is send packet wise. One such packet consists of 512 Byte
payload, 6 Byte magic number (used to check if the propeller is in
sync) and 2 Byte checksum.
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