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MAVLink Tutorial for Absolute Dummies (Part –I)

Started by Shyam Balasubramanian. Last reply by tommy 7 minutes ago. 82 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

Pixhawk external LED?

Started by Hugues. Last reply by audrius chomicius on Friday. 23 Replies

Hi,Anyone succeeded to install external LEDs on Pixhawk?On APM we could configure the param Led_mode to a binary value representing which actions turn LEDs on A5 and A6.Is there an equivalent feature…Continue

Altitude drop in apm 2.6

Started by yuvraj on Friday. 0 Replies

When I'am planning the mission I have entered has a 3 mtrs of default alt in flight data once done everything setup. when I start my mission quad is not going at particular altitude is there any…Continue

Tags: altitude

Gimbal setup APM 2.6

Started by WCP. Last reply by WCP on Friday. 6 Replies

I have read about camera gimbal setup in user guide but still confused. Using tarot gimbal.With APM 2.6 using 3.2.1 firmware I think I can have pass thru + in ROI tilt control via APM.I don't see in…Continue

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Comment by SirPent on July 24, 2013 at 7:14pm

hi all, i cant seem to connect to the apm2.5 via mavlink. it shows up like normal when plugged in but mavlink will not connect, even the leds seem to behave as they did normally. everything was working fine yesterday but now nothing.....i didnt change anything between flights it has me stumped...any suggestions? 

Comment by Leonard Ray Gunter on July 24, 2013 at 7:09pm

I am setting up an apm1 I can not  find the optical flow sensor test sketch ????

Comment by mark on July 24, 2013 at 2:07pm

Thanks @iskess. I just posted this there for those following this:

Hi,

I have been working on my future arducopter for almost a month now mainly getting parts from various vendors in china, rctimer being one of them. In any case, I have run into what seems like a roadblock with the gps on this quadcopter as everything seems to be flashing pretty but nothing is registering in with ardupilot Mission Planner. I just get a "NO GPS'. So I am stumpped as to what to do with this.

I went through this great post (kudos to the author) and it helped a lot. I even did all the terminal setup reset ect.. but nothing.

I put a video up for those who have more knowledge that I do with this sort of stuff.

http://www.youtube.com/watch?v=3XchFe_zFBw

Any help would be much appreciated... Thanks in advance.
--mark

Comment by iskess on July 24, 2013 at 12:12pm
@Mark,
Go to this thread: http://www.rcgroups.com/forums/showthread.php?t=1820773
Read through post #6 and follow the instructions closely. If you still have issues afterwards, post on that thread.
Comment by Rohan Jain on July 24, 2013 at 12:05pm

Hi everyone, please spare a moment to look at this post. http://diydrones.com/forum/topics/guaging-diy-community-interest-in...

I'm trying to get an idea about the kind of interest the DIY community would have in consumer applications.

Comment by Charles lakins on July 24, 2013 at 11:35am

no gps and gps lock are two completely different messages when the apm doesnt see it attached you get no gps or when your not connected to the apm mavlink protocol

when you are connected to the apm and have no lock it will read GPS: No Fix

 

Comment by Wayne Morris on July 24, 2013 at 10:25am

@Mark, if you look at the board with the motor outputs facing you, Just above the motor outputs is a two pin jumper. I don't know if you put the header in or not. This bridges the ESC power side to the rest of the board. I went to look at the rctimer site and their photos has the header and jumper included and the board shows the connection as JP1.

My GPS does not get satellite GPS lock indoors. The No GPS on the planner means you don't have lock. The GPS maybe working fine but you can't lock inside. Take it outside and wait several minutes. The GPS should find the satellites and you will then see GPS lock on the MP. 

Comment by John McGrath on July 24, 2013 at 10:05am

@Oliver  thanks buddy I appreciate that info. Always learning :-)

Comment by Oliver on July 24, 2013 at 8:43am

@John McGarth

John, if the hex isn't level on the ground or if it has been rotated after arming the motors may spool up quite differently from one another as the craft is trying to orient itself, very noticeable if you are applying only a little throttle. The test is to spool up to where the hex is light on its feet, or even just lifts off. If there is indeed a problem you'll know it then. I got spooked by the same thing early on.

Comment by John McGrath on July 24, 2013 at 8:21am

Ok just brought the Hex into the shop hooked everything up again to diagnose issue and the motor works 100% i tapped on the esc etc etc.. seems to work fine.. A possible glicth with the apm? Interesting.

 
 
 

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