from machine import Pin, PWM, ADC
from time import sleep

pwm_1 = PWM(Pin(23),freq=50)
pwm_2 = PWM(Pin(22),freq=50)
adc_1 = ADC(Pin(34))
adc_1.width (ADC.WIDTH_9BIT)
adc_1.atten (ADC.ATTN_11DB)
led = Pin(21,Pin.OUT)
adc_2 = ADC(Pin(35))
adc_2.width (ADC.WIDTH_9BIT)
adc_2.atten (ADC.ATTN_11DB)
push = Pin(14,Pin.IN,Pin.PULL_UP)

n=0

while(1):
    if push.value()==0:
        sleep(0.02)
        n=n+1
        if n > 2:
            n=0
        while push.value()==0:
            sleep(0.03)

    if n==0:
        v = adc_1.read()
        v = (v*(125-25)/511)+25
        pwm_1.duty(int(v))
        sleep(0.02)

    elif n==1:
        v_2 = adc_2.read()
        v_2 = (v_2*(125-25)/511)+25
        pwm_2.duty(int(v_2))
        sleep(0.02)

    else:
        v = adc_1.read()
        v = (v*(125-25)/511)+25
        pwm_1.duty(int(v))
        sleep(0.02)

        v_2 = adc_2.read()
        v_2 = (v_2*(125-25)/511)+25
        pwm_2.duty(int(v_2))
        sleep(0.02)