"Gopro is, as Moroe says, smaller, Ion's fontal area is way lower. If the plan is flying, the Ion seems like a better option. The picture quality seems better too. I have a Gopro."
"probably a dead battery, they could have picked a base too far away or the day was too windy, or they were surprised, ditched and fled. many possible scenarios."
Sold as a multiple rx buddy box, can be wired in a way that the rx is connected to the master input, the computer connected to the slave input, and if the computer looses it, you can switch to manual, overriding almost…
"I vote for Caleb from CHrobotics, I am testing his IMU, should post a report soon. Dr Kalman sounds appropriate, also, does anyone think we could get him to talk for us?"
"just the board, a gps module, proper connectors and a serial port in ttl levels, I think. and, of course, the sd card and reader. I think the card firmware might need some tweaking, in order to boot logging before any command, seems easy to do. I…"