Connect your USB battery to the LED matrix and power up your Pi Zero, and then connect to your Pi Zero via SSH. Move into the Adafruit_DotStar_Pi directory by typing this:

cd ~/WearableTech/Chapter6/Adafruit_DotStar_Pi

We are going to make our Python program in this directory as it contains the necessary files to connect to the DotStar strip with Python. Open a new file in Nano by typing this:

nano ledBag.py

In the empty file that opens, type the following:

#! /usr/bin/python

import time
from random import randint
from dotstar import Adafruit_DotStar

# set up our strip
numpixels = 144
strip = Adafruit_DotStar(numpixels, 12000000, order='bgr')

# start our strip
strip.begin()
strip.setBrightness(32)

In this first section of our program, we are importing our required libraries, setting up the details for our strip, and the initializing the strip...