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Maximus · 10-28-2005, 01:03 AM

Quote: Originally Posted by quantum

Meantime, is this what you mean by a hardware solution for the dimmer?
http://www.electronickits.com/kit/co...igh/ck1003.htm

Nope, that seems like a ordinary light sensetive switches, you know... "when it gets this and this dark, then switch on whatever I have connected".

I just had a brief look at the specs for the VGA board and it looks like it's actually 0-12V, where 12V will provide 70% dimming. Personally I found the dimming not to be enough, even with 100% dimming it's too bright for night usage. That's one of the reasons I'll go with software instead.

Now, what you can do is to use something like this one: http://www.elfa.se/pdf/73/732/07322126.pdf
If you can find anything that you could feed with 12V and that outputs 0-5V then even better.
Hook it up to your gameport / or get a analog input board.
Now you can write you own software to read the sensor voltage and control the brightnedd/contrast instead _and_ you'll also get manual override.
If that doesn't suit you, use a regular photo diode to construct your own "light sensor" that outputs 0-12V to the VGA controller.

/M

10-28-2005, 01:03 AM	#62
Maximus Variable Bitrate Join Date: Apr 2004 Location: The land of polar bears and nekkid blonds Posts: 446 My Photos: ()	Quote: Originally Posted by quantum Meantime, is this what you mean by a hardware solution for the dimmer? http://www.electronickits.com/kit/co...igh/ck1003.htm Nope, that seems like a ordinary light sensetive switches, you know... "when it gets this and this dark, then switch on whatever I have connected". I just had a brief look at the specs for the VGA board and it looks like it's actually 0-12V, where 12V will provide 70% dimming. Personally I found the dimming not to be enough, even with 100% dimming it's too bright for night usage. That's one of the reasons I'll go with software instead. Now, what you can do is to use something like this one: http://www.elfa.se/pdf/73/732/07322126.pdf If you can find anything that you could feed with 12V and that outputs 0-5V then even better. Hook it up to your gameport / or get a analog input board. Now you can write you own software to read the sensor voltage and control the brightnedd/contrast instead _and_ you'll also get manual override. If that doesn't suit you, use a regular photo diode to construct your own "light sensor" that outputs 0-12V to the VGA controller. /M