You may find this video interesting. It’s a demonstration of Arduino, Command Gateway and Prepar3D working together.
In the breadboards we have two ICM7218 chips. Each one is controlling one array of 7-segment displays. Each chip is controlled in turn by one Arduino board. The sketches are running a very simple program that uses oacsp.h library in order to communicate with Command Gateway. The program just registers a listener for the N1 of engine 1, in case of Arduino Uno on the top, and N1 of engine 2 in case of Arduino Mega on the right.
The purpose of this experiment is to test the behavior and performance of Command Gateway under multiple connections.
I hope you enjoyed the video.