Define all analog pins in Pins.h

Also used 68k resistor instead of 47k in voltage divider
Start the buzzer if the voltage get's to low

Also check if deadman buttons is pressed before taking current sense measurement
Only parse incoming serial data if it doesn't update the IMU values
Make sure that it will never send out info and imu values in the same loop
Make sure the voltage is also above 5V before starting the buzzer