Sunflower - Arduino Solar Tracker

#include

Servo servohori;
int servoh = 0;
int servohlimithigh = 180;
int servohlimitlow = 0;

Servo servoverti;
int servov = 0;
int servovlimithigh = 180;
int servovlimitlow = 0;

//Assigning LDRs variables
int ldrtopl = 0;
int ldrtopr = 1;
int ldrbotr = 2;
int ldrbotl = 3;

void setup() {
  servohori.attach(10);
  servohori.write(0);
  servoverti.attach(9);
  servoverti.write(0);
}

void loop() {
  /* code */
  servoh = servohori.read();
  servov = servoverti.read();

  //capturing analog values of each LDR
int topl = analogRead(ldrtopl);
int topr = analogRead(ldrtopr);
int botl = analogRead(ldrbotl);
int botr = analogRead(ldrbotr);
// calculating average
int avgtop = (topl + topr) / 2; //average of top LDRs
int avgbot = (botl + botr) / 2; //average of bottom LDRs
int avgleft = (topl + botl) / 2; //average of left LDRs
int avgright = (topr + botr) / 2; //average of right LDRs

if (avgtop < avgbot)
{
  servoverti.write(servov +1);
  if (servov > servovlimithigh)
   {
    servov = servovlimithigh;
   }
  delay(10);
}
else if (avgbot < avgtop)
{
  servoverti.write(servov -1);
  if (servov < servovlimitlow)
{
  servov = servovlimitlow;
}
  delay(10);
}
else
{
  servoverti.write(servov);
}

if (avgleft > avgright)
{
  servohori.write(servoh +1);
  if (servoh > servohlimithigh)
  {
  servoh = servohlimithigh;
  }
  delay(10);
}
else if (avgright > avgleft)
{
  servohori.write(servoh -1);
  if (servoh < servohlimitlow)
   {
   servoh = servohlimitlow;
   }
  delay(10);
}
else
{
  servohori.write(servoh);
}
delay(50);
}