I've been enjoying DIY Drones for quite a while, but I think this is my first post. Although I’ve been flying helicopters and quads for a few years and I’ve been doing embedded programming forever, I have only recently gotten into Arduinos.
Anyway, after a day addressing some issues with the Ublox set up, I have the ArduIMU w/magnetometer and GPS up and running. Now, I would like to make the output be interrupt driven. The schematic shows D3 (INT1) going to the HP pins of the gyros, but I can't find where, in the ArduIMU code, that D3 is ever used. Can someone please advise me whether or not the D3 pin is currently used?
I think you could use that pin if you do a little surgery to your board. You would want to disconnect it from the gyros otherwise your interrupt activity will mess up the gyro outputs.