Brightness measurement using ADC

[lowpowermcu]

Posted on April 10, 2012 at 17:48

Hi all,

I want to measure the brightness using a light dependent resistor ''LDR'' uisng the stm32l15x devices. I an thinking to use the ADC to measure the ldr output but the the curve of the resistance vs illumination flux shows a logarithmic function. Is there somebody who did it?Thnaks & Regards, MCU Lüfter

[ingwmeier]

Posted on April 13, 2012 at 09:29

Thanks Erik, this link helps me too. I should find a economic solution for Lux measurement for lighting control at work environments.

[emalund]

Posted on April 13, 2012 at 14:43

IGNORE

somehow managed to get a double post.

[emalund]

Posted on April 13, 2012 at 14:44

not only economical, but quite precise and easy to implement

Erik