from machine import Pin, PWM
import utime

MIN = 1000000
MID = 1500000
MAX = 2000000

button1 = Pin(15, Pin.IN, Pin.PULL_DOWN)
button2 = Pin(14, Pin.IN, Pin.PULL_DOWN)
button3 = Pin(13, Pin.IN, Pin.PULL_DOWN)
servo = PWM(Pin(28))

servo.freq(50)
servo.duty_ns(MID)

while True:
    

    if button1.value() == 1:
        servo.duty_ns(MIN)
        print(button1.value())
    elif button2.value() == 1:
        servo.duty_ns(MID)
        print(button2.value())
    else:
        servo.duty_ns(MAX)
        print(button3.value())
        utime.sleep(1)