Turn on both the Circuit Playground Bluefruit and Feather nRF52840 keyboard. Once they're connected to each other, the onboard blue LED will turn on on the Feather. Then you should be able to press the keyboard buttons and hear your blippy tones blasting out of your CPB amp along with swirling NeoPixels.
This guide was first published on Feb 07, 2020. It was last updated on Feb 07, 2020.
This page (Usage) was last updated on Nov 02, 2020.