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ArduCopter User Group

Discussion group for ArduCopter users

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Multi-rotor endurance factors?

Started by Stefan Gofferje. Last reply by Andreas 5 hours ago. 80 Replies

I'm still trying to get the basic concepts into my head. What I can't really wrap my head around is the endurance, or better, which factors influence the endurance how?Of course, it's clear that…Continue

Tags: endurance, multi-rotor

TBS Discovery & Pixhawk load of problems :(

Started by Long Phạm. Last reply by Long Phạm yesterday. 33 Replies

Good morning DIY DRONES,You guys are my only hope as I have tried everything I can to fix this problems but it seems like an never ending journey.So, let's me start by saying that I have followed and…Continue

Tags: pixhawk, discovery, tbs

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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.

Comment by Zachary Koh on September 26, 2012 at 2:17am

Is it possible to fry your apm board through errors in the arducopter program?

Comment by Altaf on September 25, 2012 at 9:01am

How to add a flight mode of my own. .. ??


Developer
Comment by Randy on September 19, 2012 at 8:32pm

@Lucas re obstacle avoidance,

    Somebody asked that same question on the sonar wiki earlier today, i guess it's a popular thing that people want.  We don't support that at the moment and no specific plans to add it although it wouldn't be too difficult.  People would have to buy at least 4 more sonars though..$120-ish..not terrible i guess.

Comment by Lucas Tan on September 19, 2012 at 8:12pm

What are the features that can be realised for an Arducopter? 
Are there something like obstacles avoidance?


Developer
Comment by Randy on September 18, 2012 at 9:14pm

@Bradley re what is the pwm coming out of RX.  If you have your APM connected to the mission planner, go to the configuration screen, radio configuration screen and below or beside each of the green bars you will see the raw pwm value.

 
 
 

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