BBC micro:bit-based intervalometer

microbit-intervalometer.py

from microbit import *
a = 0
b = 0
while True:
    if button_a.is_pressed():
        a = a + button_a.get_presses()
        display.scroll(str(a))
    if button_b.is_pressed():
        b = b + button_b.get_presses()
        display.scroll(str(b))
    gesture = accelerometer.current_gesture()
    if gesture == "shake":
        while (a > 0):
            display.scroll(str(a))
            display.show(Image.ASLEEP)
            pin8.write_digital(1)
            sleep(500)
            pin8.write_digital(0)
            sleep(b*1000)
            display.clear()
            a = a - 1
        else:
            display.scroll("All done!")