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Started by Marco C. Last reply by Forrest Frantz 8 hours ago. 7 Replies

Hello,I was just wondering, how much current can a 14 AWG wire handle? can anyone explain and give further detais on this matter? MarcoContinue

quadcopter model dynamique identification

Started by telli khaled. Last reply by telli khaled 14 hours ago. 1 Reply

hello everybody I confused about quad-copter model identification , since the quad is unstable in open loop ,then how can I identify it since is unstable ??? but if I add a controllers in loop of…Continue

GPS Loiter holding issues

Started by Jeff Horton. Last reply by Jeff Horton on Thursday. 7 Replies

Im having trouble with getting the my quadcopter in loiter to keep its position.  It seems like its loosing the signal, but my gcs says the GpsHDOP is at .8 and there are at least 10 sats.  it will…Continue

tarot t4-3d gimbal compability with pixhawk

Started by Nichon. Last reply by Shawn McReynolds Oct 18. 20 Replies

Anyone managed to get pixhawk to control the t4-3d gimbal?i've tried following the same steps in the wiki but that was for the 2 axis gimbal…Continue

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Comment by Ray Quintana on October 10, 2016 at 6:43am

Asif what FC do you have?  I have an APM 2.8 on my rover and I had the compass jumper in the wrong spot, I had the same issue where I couldn't calibrate the compass.

Comment by Asif Iqbal on October 10, 2016 at 3:01am

Hi all

i have problem with my quadcopter.

it flip as flying. i know i could not calibrate compass in mission planner. mission planner dont get sample when i move my ardupilot

any one can help me?

Comment by Doug Adduci on June 7, 2016 at 1:47pm

I think there is a paperclip reset hole on the side of the pixhawk.  That should do it.

Comment by david turner on June 7, 2016 at 12:16pm

Good evening 

Is there a simple way to reset my pixhalk ? 

I purchased one to put in my 650 tarot and used mission planner to set it up, as I am use to this.

Then I read Qground control was better , don't believe everything you read.

So tryed it and don't like it and thought I could just reinstalled program from mission planner.No you can't won't install firmware ,so I want to start all over again from fresh. Is there a way to do this ? Looked and asked intranet without any joy.


Regards Dave

Comment by arttu mahlakaarto on June 7, 2016 at 11:08am

hi, can someone help me with APM 1???

Comment by Cala on June 5, 2016 at 9:50am

Make a cable as Tony describe, I removed the little pins from the connector and change their place

Comment by dongfeng on June 5, 2016 at 9:03am

How do you do!

Comment by Cala on May 29, 2016 at 3:41pm

Yes, that the correct position, mine is working now like that. Another thing that don't sound right is a red wire in SCL and a black one in vcc.

Comment by Tony Wall on May 29, 2016 at 3:16pm
Comment by Tony Wall on May 29, 2016 at 3:11pm

The connection cable provided with the GPS is straight, no cross-over of TX/RX (just the whole connector is up/down), but as the motherboard of the GPS (I opened it) is not labelled we don't know that the RX goes to RX as Cala suggests. The only documentation is on the PixFalcon side, so the GPS obviously has TX and RX pins the other way around as Craig says, else it wouldn't work. Both of you are right, no mistake has been made by the Holybro manufacturer besides not documenting the PixFalcon peripherals (shame because the rest of the docs and web site are nice and clean).

On the GPS side we have then, from left to right: 

1 = GND (pin 6 on FC)

2 = TX (RX on FC)

3 = RX (TX on FC)

4 = VCC +5V

5 = SDA

6 = SCL (red, pin 1 on FC)

Sound right?


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