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VERY CURIOUS EVENT

I have made a QUAD it flew very well two times  but with important trim valors but now

 I have a problem:

connected with the configurato, gas on 

only the  the motors 2 and 3 run 15 seconds after they stop and the 1 and 0 run 15 seconds after they stop

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ArduIMU+v2 and Xbee

I am trying to emulate Jean-Louis' Scorpid 500 project using the same hardware basically to be able to use his Autostab 3.3.1 firmware  program  for this project.

 

Can I add an xbee transmitter for data and where would I connect it on the ArduIMU +V2

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Rapid Descents

Hello All,I've been gaining confidence with the Arducopter over the last few weeks.One thing I've noticed that is very similar to dirt-bikes...when in doubt, gas it.Elevation, orientation, recovery...(for me)When I'm bringing the copter down from hig

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biggest motor spec

Hi! Just wondering ... what's the biggest outrunner motor the arducopter community has used? Obviously it does not involve the arducopter kit, so any sharing of associated components used *e.g., battery, frame, esc, ... anything to get a sense of how

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This is my UAV...

This is my UAV... (beta vesion)
Now I´m entering in the test season....
3690854979?profile=original3690855047?profile=originalHope you like it...
I would like to hear suggestions to improve.

3 meters wingspan

40 cm chord

26 cm3 engine

1 hr of fuel

2kg of payload

 

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Flight Control Algorithm

Is there any source that covers the basic theory and equations for the control of quadcopters, including incorporating the accelerometers and gyros, the PID control, anything else, etc. I would like to get some information on the basic formulations.I

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Sync Error in APM

Hey People,

 

Ever since yestrday, my APM is having trouble comunicating with the PC. Heres what im seeing:

 

1. When trying to upload code from Arduino, i get this error message:

              avrdude: stk500_getsync(): not in sync: resp 0X00

 

2. When try

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Strange Power behaviour

Hi all!

 

Once I´d like to descripe some strange power behavior of the apm. I tested both verseions - the old board and the new board (1.0 and 1.4) with 2 different IMU shields.

I tried 3 different power setups:

 

power via the ESC: booting problems with

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Has my sonar gone bad?

I have the Maxbotix XL EZ4. Whenever I try using the rangefinder tests I get weird results in the serial console. What type of data should I be seeing? What results are other people getting?ThanksLee

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