Re: LED DMX512 controller?

[Marc_F_Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx>]

On Thu, 21 Dec 2006 13:19:22 -0500, Marc_F_Hult
<MFHult@xxxxxxxxxxxxxxxxxxxxx> wrote in message
<l0jlo2prpls8o6s9mscstfnlg9e9nfnmrj@xxxxxxx>:

>On Thu, 21 Dec 2006 09:46:15 -0500, Marc_F_Hult
><MFHult@xxxxxxxxxxxxxxxxxxxxx> wrote in message
><2e4lo290evcc5di9tu7sud743861lmbmfe@xxxxxxx>:
>
>>On 20 Dec 2006 16:26:01 -0800, "gypsy.calling@xxxxxxxxxxxxxx"
>><gypsy.calling@xxxxxxxxxxxxxx> wrote in message
>><1166660761.299238.302160@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:
>>
>>>
>>>Thanks you all for your input, the open source enttec solution sounds a
>>>good starting point and appears to have solid documentation and the
>>>hardware is available in the UK, forgot to mention im in the UK so
>>>needed something local as Xmas is but a few days away!
>>>
>>>Thanks again and Merry Xmas to all!
>>
>>I suggested the Enttec open soure for the price and the other reasons you
>>cite. That said, you might want to review the issues that this simple
>US$55
>>device has. It  consists in  a FT232BM USB to RS-232 ,  SP485CN RS-485
>>driver and  93C46 serial eprom chips.
>>
>>The PC itself generates the DMX signal which can lead to flickering with
>>some devices/lights.
>>
>>More sophisticated  DMX512 interfaces have microcontrollers that generate
>>the signal independednt of the PC timing.
>>
>>But who knows, maybe yet more twinkling and flickering lights would add
to
>>the holiday spirit ;-)
>>
>>... Marc
>>Marc_F_Hult
>>www.ECOntrol.org
>
>Since the OP is in UK, here's a link to the UK Free DMX Community Forum.
>
>http://www.nextec.co.uk/opendmx.htm
>
>They have free programs, drivers, code, help with coding, and bare pcb's,
>complete kits, and fully-built Version 2 interfaces  based on a USM2
module
>which carries the  FT232BL  chip.
>
>I kinda like this UK company's USB DMX Cable 5-Pin
>commercial product which is built entirely inside a proper 5-pin XLR
>connector (not isolated and output-only, though).
>
>http://www.dj-online.co.uk/acatalog/Afterglow_PX_DMX_Interfaces.html
>
>Apparently these folks haven't discovered DMX512 input yet ;-).
>
>... Marc
>Marc_F_Hult
>www.ECOntrol.org

But this fellow has:

http://www.usbdmx.com/

A kit of all parts including case and connectors for isolated, full
512-channel (1 universe) send and receive for ~£87 including shipping.

The protocol for send and receive provides some error detection
http://www.usbdmx.com/downloads/protocol.pdf

... Marc
Marc_F_Hult
www.ECOntrol.org