[uracoli-devel] New project: wireless DMX board

[Charles Goyard]

Hi list,

it's been long since I didn't use uracoli, but here's a new project !

What I want/need to do is implement a small board that can receive DMX
data from a light controller (something like this:
http://www.ledstagelightingfixtures.com/photo/pl576845-40_channels_2048_dmx_lighting_controller_control_240_computer_lights.jpg),
and send it to remote nodes, that are custom made light fixtures (for
led dimming).

DMX compatibility is at premium. This was missing from my first project
(the juggling balls).

However DMX is precisely timed : 250kbps, with a pause of somehting like
92uS between frames. (see https://en.wikipedia.org/wiki/DMX512#Protocol).

I was wondering if a single AVR will be able to both receive the data
from the serial port and build the 802.15.4 packet. Notice I won't be
sending the full 512 bytes DMX frame, only 10 bytes (I only have 10
remote nodes).

Maybe I'll need to have two avrs on the sender side ? One for receiving
and parsing the DMX traffic, and the other one just to send the frames
in the air ?

Let me know if you have some insight with this.

Thanks,

-- 
Charles