I am working on a solar tracking device based on arduino and I am using LDR's (Light Dependent Resistors) as voltage dividers.
The wiring is similar to this:
The problem I am facing is that the sensors when in limited light work fine, but when exposed to sun, gives similar readings (not very different results) on all LDR's which I assume is because of very bright light source (sun) and light being reflected from other sources. The LDRs have also been divided using a cardboard structure like this:
I am thinking of increasing the value of the carbon film resistors to achieve greater variations in voltage. Currently these are 10K. Will that solve the issue? Or I should try something else?