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Xbee need help

I have purchased from Jdrone the XBee PRO 900Mhz, Wire module for vehicle and XBee PRO 900Mhz, RPSMA module for GCS and which states the following,

"Fully assembled, configured and tested telemetry set. All that you need to make your UAV to talk with

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XL maxsonar MB1260

Hi Guys I've got the maxsonar XL 1260 and i find the hight when on the ground is at 20cm but if i lift the quad to about 1mtr it says its at between 50 to 70 cm.

Is there anything i can do to calibrate this sonar to the right hight?

 

Thanks in advance

 

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Camera Mount Servo

Hi

 

I am trying to get my camera mount to point in a certain GPS coordinates using the DO_MOUNT_CONFIGURE and DO_MOUNT_CONTROL in the flight planner. May l know how do I set which my camera servo is connected to for the MOUNT mavlink command.

Just like

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Strange problem

What could cause not being able to change modes while flying but on the ground it works fine?I have solid blue on gps and solid red on imu. If I change modes on te ground it works fine. Take off and I'm stuck in stable mode.I had the problem with .50

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MISSING RC REV PARAM error

"Missing RC rev param" error when I select Radio tab APM Planner 1.0.99 for my Quad X setup.

Any idea why I am getting this message?

I cant seem to get the motor output mixing right. I do have all controls in my (Futaba T10CAG 8 Ch) RC Transmitter work

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Ardupilot version questions

I have a Jdrones quad copter with the Smaller Mega 1280 ardupilot board.

Its been a few months since I plyed with it and I was getting back to it today.

I've got (but its not soldered up or installed) a Ardupilot board with the mega 2560.

Do I need the

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APM Firmware & Mission Planner

When using the Mission Planner to upload firmware to the APM, does it download the most recent update, or just the last major version.

I notice that changes are made almost every day, and was wondering if I uploaded from the Mission Planner if these c

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