how do i disable the on board gps

i want to use an external gps, how do i disable the built in gps

apm hitting ppm failsafe mid flight

My skywalker's apm tends to crash after a running for awhile. the airlerons lock at a certain angle, the rudder deflects and all of it leads to a spiralling crash. I can't understand why suddenly the power goes off to the board, (the imu lights go of

developing ardupilots for unconventional airframes

I'm designing a Canard configuration uav, to use with APM. I know that only elevons and traditional control is implemented so far but, i'm am hoping the community can help me modify the code to add the necessary channels. 

I'm am hoping, eventually w

Ardupilot on Canard + Elevon Platform

I want to try making a Canard - Elevon platform for the ardupilot. 

The reason is that I can fit all the electronics into the fuselage easily and the control linkages are pretty simple. Another main reason is that CG balance is easy to do while switch

Ardupilot mega on my Scratchbuilt Canard + elevon platform?

I'm looking for some advice, 

i built this platform hoping to put the ardupilot on it, but im unsure as to how I can get the canard to work through the ardupilot, has anyone tried Canards, and elevons with ardupilot, (how to connect the servo connect

The difference in PID tuning between Copter and Pirate code

I was finnally able to flight test my Quad.

it weighs 1.2 kgs

swings 10 inch props with 400 series motors.

Firstly I tested with the Arducopter RC2 code. My first take off had uncontrollable yaw. under stable mode. 

I didn't read the wikis properly, so

Arducopter was working fine, until .... help!

My friends and I are building an Arducopter.

Is my ESC not compatible?

I'm using a thunderbird 18 amp ESC with a dx6 with ar6000 receiver. 

ArduCopter build - Guidance needed

A group of colleges and I are working on a Quad rotor for a school project. When Arducopter project showed up, we decided to follow it and create our own Arducopter. Most of the things in the Arducopter project wiki are very clear, and very easy to f