Measure LDR Light with Microcontroller - 10bit Resolution

[TheRedDevil18]

I have a micro-controller with 10 bit resolution. How can I convert the voltage or digital output of the microcontroller to a Lux reading ?

 

[Jony130]

See the example here
http://elm-chan.org/works/lux/report.html

 

[TheRedDevil18]

See the example here
http://elm-chan.org/works/lux/report.html

I don't have a lux meter. I noticed proteus which is the software I use for simulation has one. What if I used that to find the relationship ?

I used a circuit like this and measured the voltage

This is the curve I got

So if I find the equation of this curve, then given a voltage I can get the LUX value ?

 

[Jony130]

Try to use a transimpedance Amplifier instead of voltage divider.

 

[TheRedDevil18]

Try to use a transimpedance Amplifier instead of voltage divider.

What would be the benefit of using a transimpedance amplifier over the voltage divider ?, From what I've read, it converts current to voltage. I haven't studied this type of amplifier yet