So I'm working on a project to create a custom home made controller for KSP using an arduino mega but I am very new to using an arduino and with talking to the game so I was wondering if anyone could help me with getting a single switch when flipped to progress to the next stage of a rocket (in my eyes this is on the easier end of controls to figure out but I'm a moron and even from my research I have been getting confused. I think I need to use zitronen's KSPSerialIO mod but I'm not sure this is what I need again I'm just looking for help with one switch to change one thing on the game (the switch is a off - momentary on type of switch so a "push button")
Please and thank you.