I now have the payload programmed. I have much testing to do and need to try to optimize the memory a bit (I'm at 70% dynamic memory), but it seems to be working correctly.
Here's an overview of what happens after adequate power is on-board:
I wired up the solar array today and will check voltage tomorrow (a nice sunny day!).
I then need to figure out how to get all of this together in a way that it will hang from a tether with the solar panels pointing up, while also being VERY lightweight. I'd be happy to hear ideas.
One thing I'm not sure of is orientation of the GPS antenna. It's a very short antenna. I'm not sure if it should optimally point up or horizontally. Anyone know?
Gary, do you have your components? Let me know if you'd like to coordinate to get stuff from me. And I can send you Arduino sketches any time.