#include <ESP32Servo.h>

Servo myservo;

int pos = 0;


void setup() {
myservo.attach(23);
pinMode(22,INPUT_PULLUP);
pinMode(18,INPUT_PULLUP);

Serial.begin(9600);
}

void loop() {
if(digitalRead(22)==LOW)
{
pos++;
Serial.println(pos);
myservo.write(pos); 
delay(2); 
if(pos>=0)
pos=0;
}

if(digitalRead(18)==LOW)
{
pos--;
Serial.println(pos);
myservo.write(pos);
delay(2);
if(pos<=0)
pos=0;
}

}