import ssd1306,time
from machine import Pin,I2C

i2c = I2C(0,scl=Pin(1),sda=Pin(2))
buz = Pin(14,Pin.OUT)

oled_w = 128
oled_h = 64
oled = ssd1306.SSD1306_I2C(oled_w,oled_h,i2c)
for i in range(10,-1,-1):
  oled.fill(0)
  oled.text(str(i),60,20)
  oled.show()
  time.sleep(1)

for j in range(20):
  buz.value(1)
  time.sleep(0.5)
  buz.value(0)
  time.sleep(0.5)