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The Circuit Playground Express has two buttons. Button A is on the left and button B is on the right. We can use these buttons to update our board’s status when pressed.

Buttons

We can access the statuses of the buttons using:

cpx.button_a
cpx.button_b

For example:

from adafruit_circuitplayground.express import cpx

while True:
  if cpx.button_a:
    # code when Button A is pressed
  elif cpx.button_b:
    # code when Button B is pressed

Instructions

Inside the while loop, we are going to add an if, else if, else statement:

If cpx.button_a is pressed, set cpx.pixels[2] as red.
Else if cpx.button_b is pressed, set cpx.pixels[7] as green.
Else, turn all the NeoPixels off.

Click the Download button to download the code.py file.

Drag and drop the downloaded file into the CIRCUITPY drive on your computer.

Press the button A a few times and press the button B a few times.

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