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A worrying failed test ...

Started by Simon Gibson-Poole. Last reply by Simon Gibson-Poole 11 hours ago. 4 Replies

Hi All,Running a little survey last thursday looking for some Giant Hogweed and seemingly all went well with the flights (running a Vulcan Octocopter using Pixhawk with arducopter 3.2.1).  However on…Continue

APM 2.5 + F450, quad wobbles when gaining altitude (increasnig thrust)

Started by Luca. Last reply by Luca 17 hours ago. 9 Replies

     Hi all,  I'd like some insight as to why my quad wobbles when increasing altitude/throttle. I have lowered the PIDs in stabilize mode (now as low as 3.2 for Roll and Pitch) which helped but I 'm…Continue

Newbie question

Started by Kevin McLendon. Last reply by ian Molesworth on Thursday. 10 Replies

How do you Calculate what battery to use on a HJ 450 with APM 2.6, OSD, GPS, DJI motors, LEDS, FPV, Gopro has it's own battery but I do have an FPV CMOS camera as well. I was thinking 4S but the guy…Continue

Pixhawk internal compass interference: is it an issue or not?

Started by DG. Last reply by climr on Monday. 6 Replies

I'm currently building an Alien 680 Frame and looking around for ideas on mounting the ESC's, FC etc., I noticed several using xHawks and they mount it inside the frame with the power wires…Continue

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Comment by Itay Guy on September 5, 2013 at 11:24am

Hi, I am trying to use expansion pins , and add external pot to calibrate internal variables.

I need an example how to use them in the 3.X code

any help?

Comment by Leonard Gunter on September 5, 2013 at 11:16am

no matter what I try I can not get the optical flow test sketch to compile for apm2 does anyone have a copy of the sketch that's already edited for apm2 ? yes I am clueless about programming


Comment by David Anders on August 31, 2013 at 11:58pm

Hey all - after finally receiving my backordered FatShark goggles and having a jolly ol' time flying around, the need for an OSD has become quite apparent.  Luckily I had already purchased the MinimOSD a few months earlier.  I tried config'ing it but received what appears the be a common problem of not being able to speak to the bootloader.  I followed the information found here and here, checked this out and also this.

I did see that I needed a FTDI cable to speak to the MinimOSD and upload a bootloader so good thing I already had this cable.

However - still no go.  Would someone that has had success with this kindly let me in on something I may have missed via here or PM.

Many thanks,

Comment by GIREESH NARAYANAN NAIR on August 31, 2013 at 6:18am

Thanks Randy

Your suggestion worked. I loaded AC2.9.1b to my APM1.4 and my Quad is back to flying.

Comment by Sgt Ric on August 30, 2013 at 12:48pm

You aren't seriously thinking of flying without an R/C controller, are you?

Comment by waleed monawer on August 30, 2013 at 12:42pm

Hello all

I am new in DIY Drones
 need to  help

I work in my final year  project
Using quadcopter .

Can I calibrate the ESC by using joystick only via Mission planner without the use of RC  ?

Please help me very very necessary

Comment by Randy on August 29, 2013 at 6:19pm


     On the mission planner's firmware screen you will see a Load Previous Firmware link on the bottom right.  After clicking the download select an entry that has "AC2.9.1b" at the end

Comment by GIREESH NARAYANAN NAIR on August 29, 2013 at 2:17am

How I can get software version : 2.9.1 for APM 1.4. It is no longer supported. 

Comment by Devon Lyons on August 16, 2013 at 6:27pm
Depends on your software version: 2.9.1 - yes, 3.0.1 - no.
Comment by Santini on August 16, 2013 at 6:25pm

so I have been away for awhile is the optical flow sensor supported on APM2.5



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