from machine import Pin, PWM
from time import sleep

servo = PWM(Pin(27))
servo.freq(50)

def servo_angle(angle):
    min_duty = 25   # Nilai PWM minimum (0°)
    max_duty = 125  # Nilai PWM maksimum (180°)
    duty = min_duty + (angle / 180) * (max_duty - min_duty)
    servo.duty(int(duty))  # Tetapkan duty cycle

while True:
    servo_angle(0)
    sleep(1)
    servo_angle(90)
    sleep(1)
    servo_angle(180)
    sleep(1)