Hi, I'm a student and fairly new to electronics. I wanted to ask how to control dc motor direction using ldr.

 

What have You come up with so far ?
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Forget about the LDR for the moment, how are you currently controlling the motor?

 

Hi, I'm a student and fairly new to electronics. I wanted to ask how to control dc motor direction using ldr.

You can change the direction of a Permanent Magnet DC motor by reversing the power supply. A relay with 2Pole 2 Way contacts?
A LDR in darkness has a few Mega ohms resistance. In bright light it may be a few 100 ohms.