SUSHI – 1 is pronounced as SHUSHI /ˈʃuːʃi/ One like how a 7th-grade kid would pronounce it. It is a pre-programmed wireless game controller breakout system made for young makers or creative individuals who are interested in tinkering with gaming interfaces with the burden of building electronics from the ground up.
Three soldering points from left to right: Left channel (tip), Right channel (ring), Ground (sleeve).
Analogue Sensors 
Digital Sensors
Arduino IDE 1.8.13
Board: Adafruit Feather 32u4 Bluefruit LE
https://learn.adafruit.com/adafruit-feather-32u4-bluefruit-le/setup
This setup page seems outdated. All the libraries mentioned are not available. Based on Adafruit’s HID keyboard tutorial, I found Adafruit BluefruitLE nRF51. This library has the example sketch I am looking for.
I am using digital pin 2, 3, 5, 6, 18, 19, 20, and 21 for this prototype.