This solar tracker system uses the Arduino UNO board ... In the setup() function we set the pins were the LDR are connected as INPUTs and position the servo motor at 90° then wait for a 2 seconds ...

First of all, remove the LDR used in the setup, and extend +5-V and A0 connections as depicted in the hardware layout shown below. Also, replace the 10K resistor with a 47K to 100K one — this isn’t ...