HOWTO: 2005 STI HVAC Red Light Mod - Page 7

scottjua · 10-05-2006, 07:15 AM

bump for updates?

decodeddiesel · 04-07-2007, 07:29 AM

Hmmm...I am deffiniatly going to do this mod, but I am thinking about adding a cap and a few other things in there so as to make the LEDs flash at about 10kHz (faster than the eye can see) which will make them a LOT brighter. I'll sketch up a quick circuit and try it out...may not be worth it.

Darksabre · 04-09-2007, 12:42 AM

Quote:

Originally Posted by decodeddiesel

Hmmm...I am deffiniatly going to do this mod, but I am thinking about adding a cap and a few other things in there so as to make the LEDs flash at about 10kHz (faster than the eye can see) which will make them a LOT brighter. I'll sketch up a quick circuit and try it out...may not be worth it.

Hmm. Wouldn't changing the duty cycle of the LED's make them dimmer? I guess it depends on how they're setup stock.

decodeddiesel · 04-09-2007, 06:55 PM

Yes it would make them dimmer if you kept the same current to the LEDs, however the beautiful part about flashing them (at a couple 100 Hz) is you can up the current and make them brighter. It's not hard using an LM555. Problem is an LM555 has a max current of 200 mA, so 200/6 = 33 which isn't that much more then the 20mA the LEDs I am using normally draws. I'll have to think about this more and figure something out.

**boondocksaint** · 11-29-2007, 11:13 AM

Hmmm. I want mine to be blue. I wonder if I could just color the stock LED yellow. Then when it went through the green plastic, would it then be blue...

10-05-2006, 07:15 AM	#91
scottjua Professional STI Driver Car: 06 Aspen White STi / Location: Plano, TX (Dallas) Posts: 460 Join Date: Jan 2006 Trader Rating: (0)	bump for updates? This ad is not endorsed by this member. Please register or login to hide this ad.

11-29-2007, 11:13 AM	#95
boondocksaint Reasonable Car: Boony's Motown STi Fav Mod: correct grammar Location: D3TR01T Posts: 22,580 Join Date: Jun 2006 Trader Rating: (5)	Re: HOWTO: 2005 STI HVAC Red Light Mod Hmmm. I want mine to be blue. I wonder if I could just color the stock LED yellow. Then when it went through the green plastic, would it then be blue... This ad is not endorsed by this member. Please register or login to hide this ad.

04-07-2007, 07:29 AM	#92
decodeddiesel STI Driver Car: 05 STi CGM Location: Denver Posts: 214 Join Date: Oct 2004 Trader Rating: (0)	Hmmm...I am deffiniatly going to do this mod, but I am thinking about adding a cap and a few other things in there so as to make the LEDs flash at about 10kHz (faster than the eye can see) which will make them a LOT brighter. I'll sketch up a quick circuit and try it out...may not be worth it.

04-09-2007, 06:55 PM	#94
decodeddiesel STI Driver Car: 05 STi CGM Location: Denver Posts: 214 Join Date: Oct 2004 Trader Rating: (0)	Yes it would make them dimmer if you kept the same current to the LEDs, however the beautiful part about flashing them (at a couple 100 Hz) is you can up the current and make them brighter. It's not hard using an LM555. Problem is an LM555 has a max current of 200 mA, so 200/6 = 33 which isn't that much more then the 20mA the LEDs I am using normally draws. I'll have to think about this more and figure something out.