The NeoPixel library

The NeoPixel library in the Micro:bit allows us to write programs for NeoPixel products and their compatible devices. You can find out more about the library at https://microbit-micropython.readthedocs.io/en/v1.0.1/neopixel.html. The library comes with MicroPython; we do not have to do anything extra to enable it. Let’s start coding. I am going to connect the NeoPixel 12-LED ring to pin 0 for this chapter. The code examples have been written while considering this circuit. However, I will explain where to make changes if you have opted for a different configuration.

Check the following code example:

from microbit import *
from neopixel import NeoPixel
num_pixels = 12
ring = NeoPixel(pin0, num_pixels)
for i in range(0, 120, 10):
    print(i)
    ring[int(i/10)] = [0, 0, i]
ring.show()

The first two lines are used to import the required libraries. Then, we assign the number of LEDs in the NeoPixel product to...