import tm1637
from machine import Pin
from utime import sleep

tm1 = tm1637.TM1637(clk=Pin(0), dio=Pin(1))
tm2 = tm1637.TM1637(clk=Pin(2), dio=Pin(3))
tm3 = tm1637.TM1637(clk=Pin(4), dio=Pin(5))
tm4 = tm1637.TM1637(clk=Pin(6), dio=Pin(7))

btn_up = Pin(8, Pin.IN, Pin.PULL_UP)
btn_down = Pin(9, Pin.IN, Pin.PULL_UP)

counter = 0

def update_displays():
   
    num = f"{counter:04}"
    tm1.show(num)
    tm2.show(num)
    tm3.show(num)
    tm4.show(num)

def main_loop():
    global counter
    update_displays()
    
    while True:
        btn_up_pressed = not btn_up.value() 
        btn_down_pressed = not btn_down.value()  
        
       
        if btn_up_pressed:
            counter += 1
            if counter > 9999:
                counter = 0
            update_displays()
            while not btn_up.value():  
                sleep(0.1)

        
        if btn_down_pressed:
            counter -= 1
            if counter < 0:
                counter = 9999
            update_displays()
            while not btn_down.value(): 
                sleep(0.1)

        sleep(0.1)  

main_loop()