So the idea was to have the LEDs light up whenever I took a step. 

We took 3 different examples and Frankensteined them together to make the code that is available on GitHub.

The examples we used are:

Adafruit Neopixel > strandtest

Adafruit Circuit Playground > external_neopixels

Adafruit Circuit Playground > accelTap

The Circuit Playground board comes with an accelerometer and we used the code from the accelTap example to detect a "tap" or in our case a foot step. We added an interrupt.

I chose the theaterChaseRainbow in the strandtest example as the color pattern I wanted whenever the LED strip lights up.

The external_neopixels example is to set the colors for the onboard LEDs.

To change the timing so it matches my gait I just changed the amount of times the pattern repeats itself. I set it to 10 times and later changed it to 6 times.

There is a GitHub link to the final code!