🔎 Circuit Playground Bluefruit // Mailbag

Let's take a look at this cousin of the popular Adafruit Circuit Playground Express! This one can't be used with MakeCode, but it has also swapped out the infrared transmit/receive capabilities for bluetooth connectivity. Let's check out the board, and an example project!

// Product page: https://www.adafruit.com/product/4333
// https://learn.adafruit.com/adafruit-circuit-playground-bluefruit/pinouts#internally-used-pins-3039295-9
// https://github.com/adafruit/Adafruit_nRF52_Arduino#arduino-core-for-adafruit-bluefruit-nrf52-boards
// https://learn.adafruit.com/adafruit-circuit-playground-bluefruit/custom-hrm
// https://www.hackster.io/contests/neoedge
// https://www.hackster.io/hjones6315/sensiglove-adding-sensory-perception-to-any-prosthetic-arm-56f47f#toc-how-it-works-1
// https://github.com/neosensory/neosensory-sdk-for-bluefruit
// Circuit Playground Express video: https://www.youtube.com/watch?v=JpjpGAfAkuU