Re: LED DMX512 controller?

[Marc_F_Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx>]

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