Spinal-PC communication stops when the servo-communication flag is enabled and no Kondo servos are connected.
#define NERVE_COMM 0
#define SERVO_FLAG 1
#define DYNAMIXEL 0
#define KONDO 1
write firmware to spinal_v2 and connect via USB
terminal1
$ roslaunch spinal bridge.launch
terminal2
$ rostopic echo /imu
wait about 15 seconds
rosserial communication stops and rostopic echo returns no data