A few years back, I had an idea of making a piggyback control software/system in order to control motors, lights and relays. Back then the Pixhawk was a limiting factor and the new Navigator is capable of performing most of the functions that I missed back then. However, even with the Navigator, there is a backside to it. The available buttons on your controller and the use of the shift button to assign the same button for different operation may become a struggle as remembering it all the time isn’t always easy. The Arduino system/software has a GUI that can be displaced in a separate window or screen. I never come around to use it and it is just sitting on the “shelve”
If anyone want to download the program/files and the specification that was made to specify the system please follow the link.
But please! If you use it, change it or further develop it, then share it back on the forum, and if you tag me, I can upload the new revision on the server using the same link. Also please include a short note on what you have changed. I am very interested to hear from anyone if they try it out 
Download link below.
https://www.jottacloud.com/s/155e8ff2c6fa6ca4691925d14b926143206
