# 创建可调光LED
from machine import PWM, Pin
from time import sleep
outPin = 16
analogOut = PWM(Pin(outPin))
# 设置频率
analogOut.freq(1000)
# 
analogOut.duty_u16(0)

while True:
    myvoltage = float(input("what output voltage do you want?>"))
    pwnVal = (65535/3.3)*myvoltage
    analogOut.duty_u16(int(pwnVal))