kbtan
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I am designing a solar tracker using 2 LDR and a op-amp as a comparator to compare the light intensity from LDR. Below is my schematic
The problem is the LDR that I bought won't have exactly the same resistance when receive same light. There are some difference on the resistance especially at dark condition. The LDR difference can up to Mohm. while in light condition the difference is only about hundred ohm.
Can anyone help me solve the problem.
Thank You
The problem is the LDR that I bought won't have exactly the same resistance when receive same light. There are some difference on the resistance especially at dark condition. The LDR difference can up to Mohm. while in light condition the difference is only about hundred ohm.
Can anyone help me solve the problem.
Thank You
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