Thanks for the help. So just to confirm that I have this right: 1) My best bet would be to connect a second Arduino Mega through the D16 and D17 pins of the shielded one to establish that communication (I don't plan on using the USB during final use but it'd probably be nice for testing, so the D16 and D17 pins seem like the most convenient of those options). 2) The 12V 5A power adapter going inby KVB - RAMPS Electronics
I have a few questions about the ramps 1.4 shield, and I've never really done anything like this before, so these may be weird questions. The first one is about establishing communication between an Arduino with the Ramps 1.4 shield and another Arduino Mega. For the machine I'm making, I will be running 3 stepper motors that are expected to be run simultaneously and two servo motors which will ruby KVB - RAMPS Electronics