import time
import machine
button = machine.Pin(16, machine.Pin.IN, machine.Pin.PULL_UP)
led1= machine.Pin(0, machine.Pin.OUT)
led2= machine.Pin(1, machine.Pin.OUT)
led3= machine.Pin(2, machine.Pin.OUT)
led4= machine.Pin(3, machine.Pin.OUT)
led5= machine.Pin(4, machine.Pin.OUT)
led6= machine.Pin(5, machine.Pin.OUT)
led7= machine.Pin(6, machine.Pin.OUT)
led8= machine.Pin(7, machine.Pin.OUT)
pot = machine.ADC(machine.Pin(26))
conversion = 1/65535
vitesse = pot.read_u16() * conversion
marche = False
while True:
    if button.value() == 0:
        marche = not marche
        while button.value() == 0:
            pass
        time.sleep(0.05)    
    if marche:
        led1.on()
        led2.on()
        led3.on()
        led4.on()
        led5.on()
        led6.on()
        led7.on()
        led8.on()
        time.sleep(vitesse)
        led1.off()
        led2.off()
        led3.off()
        led4.off()
        led5.off()
        led6.off()
        led7.off()
        led8.off() 
        time.sleep(vitesse)         
    else:
        led1.off()
        led2.off()
        led3.off()
        led4.off()
        led5.off()
        led6.off()
        led7.off()
        led8.off()