import servo
from machine import Pin
import math
p_1=Pin(21,Pin.OUT)
my_servo=servo.SERVO(p_1)

while True:
    my_servo.servo_writefx(degrees=0,sleep=1000)
    my_servo.servo_writefx(degrees=45,sleep=1000)
    my_servo.servo_writefx(degrees=90,sleep=1000)
    my_servo.servo_writefx(degrees=135,sleep=1000)
    my_servo.servo_writefx(degrees=180,sleep=1000)

main.py

diagram.json

from machine import Pin,PWM
import math
import time
class SERVO:
    
    def __init__(self,pin,freq=50):
        self.pwm=PWM(pin,freq=freq,duty=0)
        self.freq=50
        self.Min_fx=0
        self.Max_fx=180
    def servo_writefx(self,degrees=None,radians=None,sleep=0):
        if degrees==None:
            degrees=math.degrees(radians)
            
        if degrees>self.Max_fx or degrees<self.Min_fx:
            return 

        Duty=int((degrees/90+0.5)/20*1023)
        self.pwm.duty(Duty)
        time.sleep_ms(sleep)