from segment import*
from time import sleep


while 1:
  for i in range (99,0,-3):
      display(i)
      sleep(1)



main.py

diagram.json

from machine import Pin

seg7a=[Pin(0, Pin.OUT),Pin(1, Pin.OUT),Pin(2, Pin.OUT),Pin(3, Pin.OUT),
Pin(4, Pin.OUT),Pin(5, Pin.OUT),Pin(6, Pin.OUT),Pin(7, Pin.OUT)] #abcdefg


seg7b=[Pin(8, Pin.OUT),Pin(9, Pin.OUT),Pin(10, Pin.OUT),Pin(11, Pin.OUT),
Pin(12, Pin.OUT),Pin(13, Pin.OUT),Pin(14, Pin.OUT),Pin(15, Pin.OUT)] #abcdefg


                #0                  #1                #2
pattern=[ [1,1,1,1,1,1,0,0],[0,1,1,0,0,0,0,0],[1,1,0,1,1,0,1,0],
                #3                  #4                #5
          [1,1,1,1,0,0,1,0],[0,1,1,0,0,1,1,0],[1,0,1,1,0,1,1,0],
                #6                  #7                #8
          [1,0,1,1,1,1,1,0],[1,1,1,0,0,0,0,0],[1,1,1,1,1,1,1,0],
                #9
          [1,1,1,1,0,1,1,0]]

def display(value):
    a=int(value%10)
    b=int(value/10)

    for i in range (8):
        seg7a[i].value(not(pattern[a][i]))
        seg7b[i].value(not(pattern[b][i]))