Controller code for the electric trombone.
sudo apt install python3-pip
pip3 install adafruit-mcp3008
pip3 install RPi.GPIO
# sudo pip3 install adafruit-gpio
sudo bluetoothctl
agent on
default-agent
scan on
list
pair XX:XX:XX:XX:XX:XX # the device to pair with.
sudo apt install libbluetooth-dev