from machine import Pin, PWM
from time import sleep

Rl = PWM(Pin(13))
Gl = PWM(Pin(12))
Bl = PWM(Pin(14))

while True:
    rv, gv, bv = -1,-1,-1
    while rv < 0 or rv > 1023:
        rv=int(input("red value(0,1023): "))
    while gv < 0 or gv > 1023:
        gv=int(input("green value(0,1023): "))
    while bv < 0 or bv > 1023:
        bv=int(input("blue value(0,1023): "))
    Rl.duty(rv)
    Gl.duty(gv)
    Bl.duty(bv)
    sleep(0.1)
    test=input("hit enter if you want to change values")