User Manual

for pin in LedPins # Assign the element in pins list to pin variable one by one. In

GPIO.setup (pin, GPIO.OUT), set the pins in list as output one by one.

GPIO.output(pin, GPIO.LOW) # Set each element in the pins list as low level to

light up the LEDs

leds[LedPins.index(pin)] = 0 # Show which LED is on

time.sleep(0.1) # wait for 0.1s

GPIO.output(pin, GPIO.HIGH)) # After delaying, set it as high level to light up or

turn off the LED.

leds[LedPins.index(pin)] = '-' # Show the led is off

You will see the eight LEDs lighten up one by one, and then dim in turn.

Further Exploration

You can write the blinking effects of LEDs in an array. I f you want to use one of these effects,

you can call it in the main() function directly.

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