const int servo =  9;        

int potpin = A0 ;  //sensor pin
int value_read; //กำหนดตัวแปรค่าเต็นจำนวน
int value_results; //กำหนดตัวแปรค่าเต็นจำนวน


int Min = 20;
int Mid = 50;
int Max = 90;

int count_Min = 0;
int count_Mid = 0;
int count_Max = 0;




void setup() {
 Serial.begin(9600);                                  //ทั่วไป
 Serial.println();
 Serial.println("setup compleat");   
 pinMode( servo, OUTPUT);

}

void loop() {

  value_read = analogRead(potpin); // read input value
  value_results = map(value_read,0,1023,0,100); //แปลงค่าจาก0-1023 เป็น 0-100%
  Serial.print("Water Level :  ");
  Serial.println(value_read);
  delay(1000);

  
  if((value_results >= Min) && (value_results < Mid)) {
   
   Serial.println("Low");
   digitalWrite(servo,  LOW);
  } 
  
  
   
  else if(value_results > Max)  {
   Serial.println("High");
   digitalWrite(servo, HIGH);
  } 
  
  Serial.println(value_read);
  delay(300);
}