# Blinky example import time from board import LED led_red = LED(1) led_green = LED(2) led_blue = LED(3) led_yellow = LED(4) while (True): led_blue.on() time.sleep_ms(250) led_blue.off() led_red.on() time.sleep_ms(250) led_red.off() led_green.on() time.sleep_ms(250) led_green.off() led_yellow.on() time.sleep_ms(250) led_yellow.off() time.sleep_ms(500)