#include <Servo.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C mrlcd (0x27,16,2);
Servo servo1;
int degree=0;
void setup() {
Serial.begin(9600);
pinMode(7, INPUT_PULLUP);
pinMode(2, INPUT_PULLUP);
servo1.attach(3);
servo1.write(30);
mrlcd.init();
mrlcd.clear();
mrlcd.backlight();
mrlcd.setCursor(0,0);
mrlcd.write("degree");
}
void loop() {
 
if (digitalRead(7)==0){
  Serial.println("you press button1.");
if(degree>0){
degree=degree-10;
mrlcd.clear();
mrlcd.setCursor(0,0);
mrlcd.print(degree);
servo1.write(degree);

}
}
if (digitalRead(2)==0){
  Serial.println("you press button2.");
if(degree<180){
degree=degree+10;
mrlcd.clear();
mrlcd.setCursor(0,0);
mrlcd.print(degree);
servo1.write(degree);
}
}
delay(100);
}