Re: Color Kinetics Controller

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

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]
>
>
>
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