MP3Car.com - View Single Post - How do you adjust Windows Gamma/Brightness in VB.net?

portreathbeach · 05-06-2008, 04:13 PM

Hi Conjur,

I'm an electrical engineer by trade and do a lot of electronics work aswell, using an LDR is an excellent way of adjusting the screen brightness. Great idea!

So, did you set the brightness to full and then let the light dependent resistor simply limit the current to the backlight?

With 10K ohms of resistance, does the screen have any backlight at all?

I've had a quick look on the internet on the Radio Spares website rswww.com but the only LDR's they have are something like 5.5K - 1000K, this would be way too much resistance, don't really want to have to use one of these attatched to transistors, your way seems very simple, I'll have to keep looking.

05-06-2008, 04:13 PM	#3
portreathbeach Constant Bitrate portreathbeach's CarPC Specs Join Date: Sep 2006 Location: Cornwall, England Vehicle: 2003 VW Transporter T5 Posts: 145 My Photos: ()	Hi Conjur, I'm an electrical engineer by trade and do a lot of electronics work aswell, using an LDR is an excellent way of adjusting the screen brightness. Great idea! So, did you set the brightness to full and then let the light dependent resistor simply limit the current to the backlight? With 10K ohms of resistance, does the screen have any backlight at all? I've had a quick look on the internet on the Radio Spares website rswww.com but the only LDR's they have are something like 5.5K - 1000K, this would be way too much resistance, don't really want to have to use one of these attatched to transistors, your way seems very simple, I'll have to keep looking. __________________ ViVE - Volkswagen In Van Entertainment: VoomPC 2, VIA C7 2GHz 7" Lilliput 120Gb Sata drive 1GB RAM [\|\|\|\|\|\|\|\|\|\|] 100% - Planning [\|\|\|\|\|\|\|\|\|\|] 100% - Software coding [\|\|\|\|\|\|\|\|\|\|] 100% - Built (Always tweaking!) Last edited by portreathbeach : 05-06-2008 at 04:25 PM.