Hi folks, does somebody had tried that?
I intent to built a party lighning using DMX over that cheap radios found on ebay.
Do you think is feasible?
Like.. some form of redirection of the data thru that cheap radios? Instead using MAX485?
Thanks,;
DMX-512 transmits data at 250kbaud. May I ask for the link to the cheap wireless radios that are able to transmit at that speed?
250k BAUD? Oh my... 
Well, it ´s this one:
From the item on ebay:
The maximum operating rate of 50kbps, support GFSK modulation
And at 50kbps the maximum distance is reduced to ~5m. At 100m expect nothing more than 2400kbps if you have line of sight.
Someone on here has developed a wireless DMX thingy but I cannot bring myself to using the naff search facilities to find it.
http://forum.arduino.cc/index.php?topic=208648.0
I'm playing with nRF24L01+ now, it's said to be 2Mbps but that's air bit-rate without overheads, retries,... I actually achieve 140Kbps at 10m of usable payload..
Maybe by multiplexing 2 of 4 devices on different channels ?
It also exist amplified models that are said to have 1000m range, so it could do it at 100m.
Things that would help with wireless DMX is to reduce your universe & channel count as much as possible. Further reductions of maybe only sending the channels needed for your wireless fixture or only sending difference data after sending initial full universe/channel data.
Someone has done AVR code/harware to control DMX over Wi-Fi
Good luck with this, as Riva said, check out my solution to DMX RX/TX using the 2.4ghz boards, they are very cheap and it works well for me, although I do need to revisit this and improve the software. Regards Bob
I am building very small wireless DMX RGB fixtures...currently hacking it together with eBay parts:
DM-103 3-channel DMX decoder
Wireless DMX module
Since the DMX & RGB LED requirements are easily met with an Arduino (or similar), and Arduino Programmability could offer even more flexibility or more channels, perhaps such a project could be accomplished with info here?
Very nicely, the eBay Wireless DMX Module also transmits to my commercial wireless DMX fixtures, so I can easily put all wireless stuff on one transmitter. Can the Wireless DMX outlined here be made to receive and decode from these eBay transceivers?