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//Include the servo motor library
#include < Servo.h >
    //Define the LDR sensor pins
    #define LDR1 A0
#define LDR2 A1
//Define the error value. You can change it as you like
#define error 10
//Starting point of the servo motor
int Spoint = 90;
//Create an object for the servo motor
Servo servo;
void setup()
{
    //Include servo motor PWM pin
    servo.attach(11);
    //Set the starting point of the servo
    servo.write(Spoint);
    delay(1000);
}
void loop()
{
//Get the LDR sensor value
  int ldr1 = analogRead(LDR1);
//Get the LDR sensor value
  int ldr2 = analogRead(LDR2);
//Get the difference of these values
  int value1 = abs(ldr1 - ldr2);

Line: 2:12: Cannot find name 'Servo'.Line: 4:13: Cannot find name 'LDR1'.Line: 4:18: Cannot find name 'A0'.Line: 5:9: Cannot find name 'LDR2'.Line: 5:14: Cannot find name 'A1'.Line: 7:9: Cannot find name 'error'. Did you mean 'Error'?Line: 9:1: Cannot find name 'int'. Did you mean 'Intl'?Line: 9:5: Cannot find name 'Spoint'. Did you mean 'SVGPoint'?Line: 11:1: Cannot find name 'Servo'.Line: 11:7: Cannot find name 'servo'.Line: 13:6: Cannot find name 'setup'.Line: 16:5: Cannot find name 'servo'.Line: 18:5: Cannot find name 'servo'.Line: 18:17: Cannot find name 'Spoint'.Line: 19:5: Cannot find name 'delay'.Line: 22:6: Cannot find name 'loop'.Line: 25:3: Cannot find name 'int'.Line: 25:7: Cannot find name 'ldr1'.Line: 25:14: Cannot find name 'analogRead'.Line: 25:25: Cannot find name 'LDR1'.Line: 27:3: Cannot find name 'int'.Line: 27:7: Cannot find name 'ldr2'.Line: 27:14: Cannot find name 'analogRead'.Line: 27:25: Cannot find name 'LDR2'.Line: 30:3: Cannot find name 'int'.Line: 30:7: Cannot find name 'value1'.Line: 30:16: Cannot find name 'abs'.Line: 30:20: Cannot find name 'ldr1'.Line: 30:27: Cannot find name 'ldr2'.Line: 31:3: Cannot find name 'int'.Line: 31:7: Cannot find name 'value2'.Line: 31:16: Cannot find name 'abs'.Line: 31:20: Cannot find name 'ldr2'.Line: 31:27: Cannot find name 'ldr1'.Line: 34:10: Cannot find name 'value1'.Line: 34:20: Cannot find name 'error'.Line: 34:31: Cannot find name 'value2'.Line: 34:41: Cannot find name 'error'.Line: 38:13: Cannot find name 'ldr1'.Line: 38:20: Cannot find name 'ldr2'.Line: 39:13: Cannot find name 'Spoint'.Line: 39:24: Cannot find name 'Spoint'.Line: 41:13: Cannot find name 'ldr1'.Line: 41:20: Cannot find name 'ldr2'.Line: 42:13: Cannot find name 'Spoint'.Line: 42:24: Cannot find name 'Spoint'.Line: 46:5: Cannot find name 'servo'.Line: 46:17: Cannot find name 'Spoint'.Line: 47:5: Cannot find name 'delay'.Line: 4:13: ';' expected.Line: 5:9: ';' expected.Line: 7:9: ';' expected.Line: 9:1: Unexpected keyword or identifier.Line: 11:1: Unexpected keyword or identifier.Line: 25:3: Unexpected keyword or identifier.Line: 27:3: Unexpected keyword or identifier.Line: 30:3: Unexpected keyword or identifier.Line: 31:3: Unexpected keyword or identifier.

Model-flaky