Re: Color Kinetics Controller

["Frank Mc Alinden" <armagh@xxxxxxx>]

Sorry Rob
            &nb= sp;   Basically what i was suggesting  was that the controll= er
could be controlled by a logic signal of +5v if the opto chip was
used..Currently as i understand it the control voltage is 24v dc.....This voltage is not directly available from a pc or standard microcontroller
circuit were +5v is..........Rob was just suggesting how to do it another way............Marks explaination had me in fits of
laughter.................I feel the same when the messages so something
like...... we,ll pass the xap message to the hub then on to the bridge then=
the plugin will pick it up and pass it on to the serial port which will pas= s
it on to the relay board which will discard it as it was meant for the lcd<= BR> ;-)))

HTH

Frank Mc


----- Original Message -----
From: "Rob Mouser" <rmouser@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, October 14, 2002 2:37 AM
Subject: RE: [ukha_d] Color Kinetics Controller


Congratulations to Ian and Frank for having a thread which may as well
be written in another language to me!

Yours feeling very dim!

Rob

Ps. Did you get this line out of Startrek:

PNP drive
transistor driven by NPN pulling the PNP base low

:-)



-----Original Message-----
From: Ian Davidson [mailto:ian@xxxxxxx]
Sent: 13 October 2002 16:28
To: ukha_d@xxxxxxx Subject: Re: [ukha_d] Color Kinetics Controller


Hi Frank

The opto is an option. I had looked but thought against it for
now. The
lights each have a 33k resistor in series with the i/p and a 10K
resistor
pulldown to 0V from the i/p. So each time a light is added to
the chain it
adds another 43k resistance to 0V. I think I'm going to use a
PNP drive
transistor driven by NPN pulling the PNP base low. The NPN can
then be
driven straight from the uP. It should work out at about =A31.50
for the
transistor bits. The board is a stand alone powered of the same
PSU as the
lights so isolation at this time is not needed. I think to be on
the safe
side when I add the rs232 control an Opto to the serial side of
things is a
must, just to prevent any damage to PC MB if wired incorrectly.
I have found
some transistors with the correct spec but if you have used any
suggestions
of devices with turn-on & off times in the 10's of nS then
please let me
have the numbers.

Thanks Frank

Ian D


----- Original Message -----
From: "Frank Mc Alinden" <armagh@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Sunday, October 13, 2002 10:12 AM
Subject: Re: [ukha_d] Color Kinetics Controller


> Hi Ian
>            = ; Just a thought could you not use a high speed opto
to do the
> switching then you could use +5v control ??? Depends how many
you need as
> they cost around $8.00 each..
>
> Frank Mc
> ----- Original Message -----
> From: "Ian Davidson" <ian@xxxxxxx>
> To: "HA Yahoo group UK" <ukha_d@xxxxxxx>
> Sent: Sunday, October 13, 2002 6:58 PM
> Subject: [ukha_d] Color Kinetics Controller
>
>
> > Hi All
> >
> > OK. The controller has not moved far yet. I have a very
basic working
unit
> but to test it I modified one of the lights to accept 0 to 5V
switching.
The
> last thing anyone wants is to take all there lights apart and
swap some
> surface mount components. So I'm currently sorting out the
electronics to
> control unmodified units. They need high speed switching
transistors. The
> data pulses are 4 micro seconds in length and need to switch
to +24V.
> Standard general purpose transistors have switch on/off times
of a few
> microseconds and do not work. If I don't have any suitable
transistors
I'll
> order some tomorrow and try them out Tuesday night. I should
get a couple
of
> hours tonight so I'll try to do some more work on the
software. I just
> thought I would keep people informed as I've been to busy over
these last
> few days to post.
> >
> > Ian D
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > http://www.automatedho= me.co.uk
> > Post message: ukha_d@xxxxxxx > > Subscribe:  ukha_d-subscribe@xxxxxxx > > Unsubscribe:  ukha_d-unsubscribe@xxxxxxx > > List owner:  ukha_d-owner@xxxxxxx > >
> > List of UKHA Groups here -
http://groups.ya= hoo.com/group/UKHA_Grouplists/
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/te= rms/
> >
> >
> >
>
>
>
> http://www.automatedhome.co= .uk
> Post message: ukha_d@xxxxxxx > Subscribe:  ukha_d-subscribe@xxxxxxx > Unsubscribe:  ukha_d-unsubscribe@xxxxxxx > List owner:  ukha_d-owner@xxxxxxx >
> List of UKHA Groups here -
http://groups.ya= hoo.com/group/UKHA_Grouplists/
>
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/te= rms/
>
>
>