ArduCopter User Group

Discussion group for ArduCopter users

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Unexplained fly away logs here but don't quite know how to interpret.

Started by Sean Headrick. Last reply by Randy 9 hours ago. 5 Replies

We were doing a demo for some water resources groups here in the SF north Bay area along the delta showing salinity gradients at specific GPS locations. The protocol was to take off in auto mode and…Continue

Quadrotor fly away

Started by Saurabh Ladha. Last reply by Tearig on Monday. 11 Replies

Hi,My quad is running on Pixhawk and I use a FlySky TH9X radio (typical DIY Quad kit from 3D Robotics). The firmware is ArduCopter v3.1.5.This morning, my quad started flying away (it might have been…Continue

Tags: away, fly, connection, lost

MavLink Failed

Started by Michael DuQuette. Last reply by Robert Fenney on Sunday. 1 Reply

I'm having an issue similar to the issue Oliver is…Continue

Long distance milestone for multirotors?

Started by Eric. Last reply by Brit Davis Jul 17. 9 Replies

I have seen a few users with "100 km" badges, and I believe these were all achieved with fixed wing platforms. (Right?)I am wondering... what are the longest distances people have been able to cover…Continue

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3D Robotics
Comment by Chris Anderson on June 25, 2013 at 3:32pm

Search is working for me

Comment by Jay Johnson on June 25, 2013 at 3:19pm

Anyone else getting "no results" when using the Search function on the discussion forum?

Comment by Wayne Morris on June 23, 2013 at 10:35am

Sounds great Stephen. Thank you.

Comment by Stephen Dade on June 23, 2013 at 6:42am

Wayne - you can find the pre-built hexes at  You will want the "daily builds" of the appropriate branch (copter, plane, etc)

Note that these builds are compiled and uploaded daily based on the current Git repository so you will have to make sure that use are using the latest codebase when compiling.

Comment by Wayne Morris on June 23, 2013 at 6:22am

OK, that sounds better. Can I download the standard firmware file from somewhere to compare with the one I compiled to ensure they match?

Comment by Stephen Dade on June 22, 2013 at 9:28pm

Wayne - The warnings are expected (and normal) with the APM code. The output file is expected to be put in a temp file - that's how the makefile is programmed.

If you're using the Arduino environment, simply select the mega2560 board and correct com port, then press "verify" and then press "upload". Arduino will take care of the details.

The makefile is only used directly if you're using Linux or Cygwin (on Windows).

Comment by Bob Doiron on June 22, 2013 at 6:40pm
Arduino will compile and download from the project directory. The 'verify', which is a compile, happens in the temp. I never did try having arduino install it...
Comment by Wayne Morris on June 22, 2013 at 6:39pm

The make file is just a configuration. I read instructions to run it.

To compile, I am selecting the sketch and clicking compile.

Thanks for the input.

Comment by Wayne Morris on June 22, 2013 at 6:36pm

So the output file is:

C:\Users\Wayne\AppData\Local\Temp\build7487716384992828737.tmp\ArduCopter.cpp.elf C:\Users\Wayne\AppData\Local\Temp\build7487716384992828737.tmp\ArduCopter.cpp.hex

I have done other Ardunio projects but the output was in the target directory.

Comment by Wayne Morris on June 22, 2013 at 6:32pm

I am getting these warnings:

Log.pde: In function 'int8_t dump_log(uint8_t, const Menu::arg*)':
Log.pde:80: warning: comparison between signed and unsigned integer expressions
Log.pde:80: warning: comparison between signed and unsigned integer expressions
ArduCopter.pde: At global scope:
ArduCopter.pde:189: warning: 'int16_t get_heli_rate_roll(int32_t)' declared 'static' but never defined
ArduCopter.pde:191: warning: 'int16_t get_heli_rate_pitch(int32_t)' declared 'static' but never defined
ArduCopter.pde:193: warning: 'int16_t get_heli_rate_yaw(int32_t)' declared 'static' but never defined
GCS_Mavlink.pde:275: warning: 'void send_simstate(mavlink_channel_t)' defined but not used
Log.pde:573: warning: 'void Log_Write_Data(uint8_t, uint16_t)' defined but not used
Log.pde:630: warning: 'void Log_Write_Data(uint8_t, float)' defined but not used
ArduCopter.pde:316: warning: 'void Log_Write_DMP()' declared 'static' but never defined
ArduCopter.pde:298: warning: 'void Log_Write_IMU()' declared 'static' but never defined
ArduCopter.pde:299: warning: 'void Log_Write_GPS()' declared 'static' but never defined
ArduCopter.pde:483: warning: 'void report_heli()' declared 'static' but never defined
ArduCopter.pde:484: warning: 'void report_gyro()' declared 'static' but never defined
ArduCopter.pde:497: warning: 'RC_Channel* heli_get_servo(int16_t)' declared 'static' but never defined
ArduCopter.pde:498: warning: 'int16_t read_num_from_serial()' declared 'static' but never defined


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