In the original Star Trek series, there are a couple of episodes that feature a severely disabled Captain Pike (former captain of the Enterprise) who is immobilized and can not speak. He can only communicate via a little light on the front of his wheel chair. It blinks (and beeps) once for "yes", and twice for "no".
We can create a similar yes/no functionality using our Circuit Playground. We can use the buttons to select "yes" or "no". The speaker can provide the characteristic monotonic "beep", and the NeoPixels can act like the light. In fact, the resulting program is pretty simple. However, it serves as a good way to introduce a fairly advanced coding topic - refactoring.
We will start with a fully functional program and then incrementally go through it and show how it can be "improved" by applying various refactoring techniques.
Ready to get started?
Good, let's go.
This project uses the hardware already included on the Circuit Playground so no additional electronics or soldering are required. If you want to use the Circuit Playground without being attached to your computer, you will also need some batteries and a holder for the batteries.
If you are new to the Circuit Playground, you may want to first read these overview guides.
This project will use the Arduino IDE. Make sure you have added the board support for the Circuit Playground as well as installed the Circuit Playground library. MUST DO BOTH. This is covered in the guides linked above.