Have used an oscilloscope to see that the GPS adapter is outputting digital data, but the ports on the IMU feeding into the FTDI cable do NOT show digital data.
If I type a test word into the command line on the serial port window, the program returns the same information that i input (Ex: "test" gives 74,65,73,74).
This suggests that communication exists from the computer to the IMU and back, but does not exist from the GPS to the IMU to the computer.
Perhaps there is something wrong with how I've set things up? If someone could describe which items should be connected, that may be helpful.
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