2. LED Array

Objective

You are going to make a line of LEDs light up one by one.

Wiring

Remember the shorter leg (negative side -- cathode) of the LED goes to the GND, and the longer leg (positive side -- anode) goes to a pin. Follow the circuit diagram provided below to wire the Metro M0 Express.

Coding/Programming

import board

import digitalio

import time

L0 = digitalio.DigitalInOut(__________ )

L1 = digitalio.DigitalInOut(__________ )

L2 = digitalio.DigitalInOut(__________ )

L3 = digitalio.DigitalInOut(__________ )

L4 = digitalio.DigitalInOut(__________ )

L5 = digitalio.DigitalInOut(__________ )

leds = [L0, L1, L2, L3, L4, L5] # array of LEDs

for i in leds:

i.direction = digitalio.Direction.__________ # define the direction of the digital pin

while True:

leds[0].value = __________ # turn LED on

time.sleep(1) # delay

leds[0].value = __________ # turn LED off

time.sleep(1)

leds[1].value = __________ # turn LED on

time.sleep(1) # delay

leds[1].value = __________ # turn LED off

time.sleep(1)

leds[2].value = __________

time.sleep(1)

leds[2].value = __________

time.sleep(1)

leds[3].value = __________

time.sleep(1)

leds[3].value = __________

time.sleep(1)

leds[4].value = __________

time.sleep(1)

leds[4].value = __________

time.sleep(1)

leds[5].value = __________

time.sleep(1)

leds[5].value = __________

time.sleep(1)