[apalrd]

Try probing the +5 to see if you have power to the gyro. Then probe SIG with a multimeter when still. It should be somewhere reasonably close to 2.5 volts (anything between 2 and 3 is normal, anything above 1 means it at least has power) then spin the robot, so you can see the multimeter, at a fairly constant speed and see if you have any change. You could also use the cRio analog input as a multimeter, and graph the analog channel output on the front panel. It should be at the centerpoint when not moving then go up or down when moving. Try going as fast as you can, and see if you can see a difference. Also, if you click a wire when the code is running, you can probe the wire to see the value, helpful when debugging problems like this.