A brief history: My 2.5 arrived 6 months ago and I completed physical construction by about February. I got to the point that everything was working, but I couldn't get a good seal so I couldn't launch it. I built version 2.6 end caps, which entailed redoing the DB25 connector, etc., and have not been able to get it to work since. I can connect to the cockpit and do see a video image, but have no control over any of the motors or the LED's (I have not installed the lasers). I have tried countless times, as recently as 30 minutes ago, to update the arduino, but everytime it gets a synch error and fails. I see that others have that problem, but infer from another post that the cause may have been bad code which was replaced within the last day or so. I have tried reinstalling the new code without success -- I still get the synch error arduino update failure. My cockpit view has changed, however, which suggests to me that at least the beaglebone got updated, but I am not sure that is possible since I was using the update from the SD card, not the new flash method. Until recently, my cockpit showed 0 volts. Now it shows a red battery icon but no numeric value. I have verified that my batteries are fully charged, and I have investigated the possibility that I have a short in my DB25 wiring. To that end, I purchased a gizmo that helps analyze DB25 connections; from what I can tell, the only continuity between adjacent pins is explained by continuity in motor windings. And I did verify that I am getting full voltage from the batteries through the correct pins at the correct polarity. Still, I am tempted to buy another end cap set and rewire the whole thing. If I do, I will solder up the db25, and test those connections, before making further connections to the motors, etc.
Frankly, a big part of my problem is my own lack of ability to understand the instructions I am reading on this site. In an effort to remedy that, I purchased a book on beaglebone and a book on arduino, and have spent the last 3 months trying to become conversant in those concepts. Unfortunately, even though I have learned to make both the beaglebone and the arduino do simple things like flash leds, nothing I have learned explains most of my questions. My confusion is everywhere, but as examples, I see references to cockpit and dashboard, but I can't really understand the distinction. Similarly, I read about needing to boot the beagle bone twice after "all the lights go high" but I am not sure I am doing that correctly. I have looked at lots of youtube videos, but haven't found one that addresses the software issues I am having.
At this point, I don't know what to do and am looking for suggestions. Thanks, Rick