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Re: xPL/xAP an alternative to C-Bu$ ?
- Subject: Re: xPL/xAP an alternative to C-Bu$ ?
- From: "David Buckley" <db@xxxxxxxxxxx>
- Date: Thu, 20 May 2004 19:44:20 -0000
--- In ukha_d@xxxxxxx, "Mal Lansell" <mlansell@f...> wrote:
> That's got me thinking! I was about to embark on an 8 channel=20
> PIC based dimmer, but for =A336 I might as well buy the=20
> Artistic License chip and have 16 channels instead!
Oh indeed. Works like a charm. I'm told there are commercial=20
dimmers available that use these chips, but I'm not aware of any=20
actual brands. There are also other chip models available. Don't=20
look at the LED lights or strange things will happen to your credit=20
card balance.
> BTW, what do you use to generate the DMX commands? Is=20
> there another one chip solution or did you roll your own?
Its a one chip solution I rolled myself.
Generating DMX512 is easy using bit-banging; send a space for > 88uS=20
as the DMX frame separator, then the mark-after-space break of at=20
least 8us, then bitbang out a zero meaning "dimmer information=20
follows", then as many as 512 bytes of level information.
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