I finished off work on the logging and telemetry software for my balloon test platform.
A look at the alpha hardware...
The code is here.
The log entries look like this:
123858.000|5054.0000N|11358.0900W|523|509|500|130|186
Which is just a pipe (|) delimited string containing:
* GMT
* Latitude & N/S
* Longitude & E/W
* X axis accelerometer
* Y axis accelerometer
* Z axis accelerometer
* External Temperature
* Internal Temperature
The accelerometer and temperature values are raw. I should convert them to 'G' and '°C' ... but not today.
Telemetry works by by having the Arduino serial output pin drive two inputs: The Open Logger and the XBee.