Re: Re: DMX Controller

["Frank Mc Alinden" <fmcalind@xxxxxxxxxxxxxx>]

Hi Lehane

>The better ones don't need repetetive
> sending of the DMX settings but use bigger PIC's like the 18F452.

>From the specs i read that one doesnt require software refreshing so
maybe
it has a 18F252 ...


> The DMX/dimmer card is also worth a look since it drives 'random'
> rather than 'zero crossing' solid state relays. At about GBP2.50 for
> 2A SSR's it makes an 8 channel dimmer for under GBP100 - compare that
> to X10 or C-BUS!

That is quite cheap isnt it ....Whats the advantage of "Random
"...instaed
of zero crossing..........

I already has CBUS installed for lighting but i like the idea of dmx relay
boards ,so would be good if dmx was the chosen xPL rs485 network
protocol....would consider purchasing some dmx kit if one of the guys was
up
for xPLling it.........

> I've also just got two of the NETIOM modules. These are PIC18F452
> based units with Ethernet and 16 I/O lines and 4 A/D. The installed
> application is web based but I've just started work on the Microchip
> IP stack to add xPL. More when the design is finalised

Keep us posted on this one ,sounds quite interesting...........

Frank



----- Original Message -----
From: "g8kmh" <lehane@xxxxxxx>
To: <ukha_xpl@xxxxxxx>
Sent: Tuesday, November 23, 2004 5:21 AM
Subject: [ukha_xpl] Re: DMX Controller


>
>
> Frank,
> Yes they look interesting, although there are a number of PIC based
> designs around at a lower cost which mainly use the parallel port and
> a kit from Velleman which is USB based for about EUR80-there seem to
> be a few others about too. The better ones don't need repetetive
> sending of the DMX settings but use bigger PIC's like the 18F452.
>
> The DMX/dimmer card is also worth a look since it drives 'random'
> rather than 'zero crossing' solid state relays. At about GBP2.50 for
> 2A SSR's it makes an 8 channel dimmer for under GBP100 - compare that
> to X10 or C-BUS!
>
> There is also an off the shelf 12 channel unit, the DPX12/4 which is
> about GBP230. This accepts wires rather than having sockets for the
> AC so is ideal for node 0 or node 1 installation. Max load is 43A
> which should be plenty.
>
> I've also just got two of the NETIOM modules. These are PIC18F452
> based units with Ethernet and 16 I/O lines and 4 A/D. The installed
> application is web based but I've just started work on the Microchip
> IP stack to add xPL. More when the design is finalised but one of the
> design goals is to make it self contained such that it will respond
> to its own inputs, as well as xPL control messages. That way the
> house doesn't go completely dark if the HAPC falls in a heap :-)
>
> Lehane
>
>
>
> --- In ukha_xpl@xxxxxxx, "Frank Mc Alinden"
<fmcalind@b...>
> wrote:
> > Hi All
> >          Have came across a serial dmx controller from UK based
> Company
> > Milford Instruments which looks like it could be easily
> xPLled .....Looking
> > at the data sheet it doesnt appear that the serial port has to
> constantly
> > refresh the data ..It also can store up to 60 scenes and scenes 
1
> to 8 can
> > be triggered by manual swich inputs.....cost of unit is 65
> pounds....Also an
> > 8 way dmx relay board is available.......check it out
> > http://www.milinst.com/index.htm
> >
> >
> > Frank
>
>
>
>
>
>
> xPL Links: http://www.xplproject.org.uk http://www.xplhal.com
http://www.xpl.myby.co.uk
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