[vcf-midatlantic] Kind of OT: RS-485 to DMX-512
Ethan O'Toole
telmnstr at 757.org
Fri Nov 30 19:38:58 EST 2018
> Lighting packs are Strand CD-80 with the aftermarket Johnson Systems DPC-24
> control modules, so yes, it's definitely DMX-512
Ah okay! I thought that was pretty early for DMX-512. I remember I had
some Intellabeam fixtures and they were said to "mostly work with
DMX-512." I used it with a LPT dongle someone made using a PIC and it
worked, then got the Entec. I've had the Entec for some 10+ years and it's
had the crap kicked out of it at events and held up well. No regrets,
though the Entec Pro has a bit more support (the laser show software I
use, Pangolin Beyond, I think only supports the Entec Pro -- but I don't
use it for DMX so not an issue for me.)
The cheap dongle is these:
https://www.aliexpress.com/item/NEW-USB-TO-TTL-RS485-FTDI-Interface-Board-FT232RL-75176-Module-Free-shipping-J179/862635965.html
They're everywhere. You have to wire it out.
Also, note that "real" interfaces like the Entecs usually have a 5 pin XLR
connector that is real DMX standard versus the 3 pin mic style that is
usually used (at this point Cat5 RJ45 would be much better.)
On the vintage tip -- I have a Status Cue console from High End Systems
and am looking for the ISA card that goes in the PC that goes with it. The
software is freely downloadable, I have a luggable Pentium 1 but can't
find the ISA card anywhere.
- Ethan
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