Hi,
I know little about electronics and less about programming, but I have rigged up these (above) components and have used programmes to make them work individually, and sometimes in pairs; but drafting a UNO programme to integrate these devices is proving to be something of a challenge.
I am making progress by splicing likely-looking programmes gleaned from an extensive web search and debugging the results (my apologies to real programmers ). I am beginning to get my head around structure and syntax of programme development, but it would be useful to know if anyone out there knows of an open source programme that could help me to pull everything together?
So what are you trying to make? Don't tell me it's an APRS tracker? (isn't that what the HX1 is best for?)
A good example of a piece of code that integrates everything you want except the SD card (and maybe the sensors, not sure what you're looking for) is Trackuino. See http://www.trackuino.org.
Note it doesn't explicitly use a MAX-7, just a gps. I've modified the Trackuino code to explicitly support a MAX-6 (which should be nearly identical to the MAX-7) if you're interested.
Yes, it is a balloon project. Two of my grandsons thought it would be a good project for us all to work on, and somehow I ended up doing it. We will all be there for the launch, though! As I mentioned, I am pleased with my progress on the electronics and individual bits of programming, but I am not finding the pulling things together very intuitive. Your reference will be very helpful.