For the Adafruit Circuit Playground Express, I have put together some
Messy Arduino IDE software just to show it off.
It does 8 different things at once using ONLY the internal features on the board.
Here are links to Four slightly differing versions of the software:
Rev 1: Hello_CPX_Testing_Several_Functions_At_Once.ino
This is the basic operating version of the test program, with none or almost no, departure from the "Hello_XXX" Examples from Adafruit.
All LEDS flashing at once
The speaker is only used to produce one short tone.
Serial Monitor is in "record" format, with short function labels
This version presents okay on the Serial Plotter.
Rev 2: Hello_CPX_Testing_Several_Functions_At_Once_Star_Wars_Rev2.ino
LEDs are all flashing, as above.
Delays are pretty short. Serial Plotter works, but data aren't too useful since all points are so close together.
Serial Monitor is in list format and I have added text to suggest how to get things to change.
Rev 3: Hello_CPX_Testing_Several_Functions_At_Once_Star_Wars_Rev3.ino
This one is set up to present most of the activity onto the Serial Monitor in list form.
All of the programmed functions are working.
You can identify it because it's the first version to have the LEDS rotating back and forth.
However, it does not present too well on the Serial Ploter
Rev Spreadsheet: Hello_CPX_Testing_Several_Functions_For_Spreadsheet.ino
This one is set up to present most of the activity onto the Serial Monitor in horizontal "one record (row) at a time" format
so it can be copied and pasted to a spreadsheet for graphical analysis. I do this by turning "auto scroll" off and doing a copy/paste
into an excel spreadsheet, selecting "space" as the delimiter.
This version presents okay on the Serial Plotter.