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ArduCopter User Group

Discussion group for ArduCopter users

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Build APM 2.6 for data logger

Started by Vitalii S.. Last reply by Vitalii S. 12 hours ago. 4 Replies

Hi!I want to build small data logger for our plans. We want to use it on light gliders so every additional gram and mm has great importance. It should be really small, like 50*40*5 mm  or less ( I…Continue

MAVLink Tutorial for Absolute Dummies (Part –I)

Started by Shyam Balasubramanian. Last reply by Alejandro Hincapié yesterday. 74 Replies

Hi All,I was recently fiddling around the code for a while and decided to create a tutorial out of it so that others may find it useful. If I would have known this knowledge long back, I am sure I…Continue

Tags: Ardupilot, Mega, the, program, to

How to assign a receiver channel as a pass-thru Pixhawk ?

Started by Hugues. Last reply by Geert Pirens yesterday. 30 Replies

Hi,I would like to configure two radio channel of my receiver to pass-through Pixhawk on its RC aux channels (that is the RC9 to RC14 aux PWM outputs).I found in mission planner the RCx_FUNCTION…Continue

Camera Pan Tilt Power

Started by Damo. Last reply by HOH on Monday. 4 Replies

With JP1 removed, is it ok to power my finwing 390 pan tilt servos from the oututs of the APM on channels 6 and 7?thanksDamoContinue

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Comment by Marty LaBelle on October 8, 2012 at 8:25am

I am officially joining this group, having received my first APM, and QuadCopter components a few days ago. I've been wanting to build one for years, now that I'm out of the Army and building my future career; I'm jumping in.

I've started finding my way around the forums and I have found even the most active contributors welcoming. This is not the case on other forums, and I appreciate it. Thanks!

Comment by Zachary Koh on September 27, 2012 at 5:00am

@Jani Sorry for the lack of description. I meant to change the "stabilized" pitch angle (such that the quad would be "stabilizing" towards a vertical position rather than horizontal).

Eg:
Regular quad position while hovering in stabilize:

+-----===-----+

New position that the "stabilize" function will try to achieve:

+
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|

||

||

|

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+


JDrones
Comment by Jani Hirvinen on September 27, 2012 at 4:39am

@Zachary, can you explain a bit more what you plan to do and on which axis

Comment by Zachary Koh on September 27, 2012 at 2:52am

I'm trying to change the "reference" for the stabilize function from eg: 90deg to 180deg.

Can anyone proficient in understanding the ArduCopter program point me to where I should be looking?
Your help would be much appreciated.

Comment by Zachary Koh on September 26, 2012 at 4:33am

@Marooned

Hmm. Do you mean using Mission Planner to upload the 2.7.3 firmware erases the existing radio calibration?

If that's the case, we should not have to redo the radio calibration since we uploaded both 2.7.3 and our custom program through the Arduino compiler and not Mission Planner.

Comment by Marooned on September 26, 2012 at 4:13am

Updating to 2.7.3 erased eeprom hence this radio calibration. Updating to earlier firmwares left eeprom so no calibration was needed. Anyway, I just wrote what helped me in similar situation. You can try (it takes no more than a minute) or wait for other hints.

Comment by Zachary Koh on September 26, 2012 at 4:10am

@Marooned
The team moved from the 2.7.3 to our custom program without performing radio calibration and did not have any problems. But moving back, the 2.7.3 produced no response.
If shifting from one firmware to the next did not give any problem, shifting back to the first should not either.. Right? Pretty perplexed here.

Comment by Marooned on September 26, 2012 at 3:52am

Zachary: did you do radio calibration after uploading new firmware? I forgot about it and had the same effect as you described.

Comment by Zachary Koh on September 26, 2012 at 3:51am

@Randy
THANKS. I was extremely worried that my programming could have created some problem with the power distribution and inadvertently fried the apm.

But now, we realized that our NEW program allows the apm to function properly (i.e. board powers up, ESCs arm, motors respond to throttle input). However, uploading the regular ArduCopter 2.7.3, the motors stay in calibration mode (consistent beeping), regardless of what we do. Do you know why?

As for ESC overheating, is it caused by malfunctioning power distribution?

Thanks.


Developer
Comment by Randy on September 26, 2012 at 3:14am

@Zachary re frying board through errors in the arducopter program,

    I don't think that's possible.  For things like an ESC where you've got large voltages that are being controlled by the firmware it's possible but as for the arducopter software, it's just running a program that changes signal out to ESCs, xbees, etc so I can't imagine how that could happen.

 
 
 

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