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Prearm Issues with APM 3.3

Started by Thomas Schmitt. Last reply by Tony Wall 1 hour ago. 9 Replies

Hi,since I use Copter 3.3 Firmware i have a strange behavior that i like to share here. Maybe the one or the other has the same effect or knows how to fix it.Description: If I try to arm my Pixhawk I…Continue

sonar-range unchange

Started by velonica boo 4 hours ago. 0 Replies

hi , i have connected LiDar to pixhawk AUX OUT 5 and 6 ( follow …Continue

Sub 250gram Autonomous + Racer APM Based FPV Micro Project

Started by Edgar Scott. Last reply by KodeIn 18 hours ago. 74 Replies

Hi everyone,I have not been on DIY for a while.  I moved on to racers and mini drones.But I missed playing with Mission Planner and Tower. Since I have been on this site the new FAA regulations were…Continue

Quadcopter - APM v2.8 not recognizing throttle with ESCs plugged in.

Started by Flak. Last reply by Flak 19 hours ago. 8 Replies

I have a quadcopter on a s500 frame with an issue that i just can't seem to figure is the parts list:- turnigy sk3 1130kv motors- hobbyking 20a ubec/escs- apm v2.8- turnigy 5200 mah 3s lipo-…Continue

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Comment by Cala on April 10, 2016 at 5:52pm

You can use external compass

Comment by Paul N Braida M.E on April 10, 2016 at 5:49pm

Looking for APM 2.5 compass help. Says bad compass health yet when connected to mavlink shows it working ok. Can compass be replaced?

Comment by Cala on April 9, 2016 at 1:17pm

I'm assembling a robocat 270 motors but I'm not shure if I have to use H or X config, It's have more distance side to side than front-rear, thank's

Comment by Don Pillow on April 8, 2016 at 8:58pm

@ Thomas Stanley-Jones the tool that Cala suggested works great for servo plug type connectors and the pins and sockets can be found just about anywhere-hobby.

As for the DF13 connectors I buy from Digi-key, here is the link to the CONN CONTACT 26-30AWG CRIMP TIN (pins), DF13-2630SCF

and here is a link to CONN SOCKET HOUSING 4POS 1.25MM, DF13-4S-1.25C:

I buy 2-6 pin housings and Digi-key sells up to 40 pin ones.

The HK crimp tool I didn;t have much luck with and I have a similar tool that I paid $130 for and doesn't do any better.

  The best tool I found that works numerous types of pins/sockets(package says

 80 different types of terminals) including the Servo and DF15 is a:

PA-09 Micro Connector Pliers by Engineer that you can get for under $40, works on 32-20awg wire, Molex, JST etc. pins.

Hope this Helps-Don

Comment by Stephen Zidek on April 8, 2016 at 5:17am

@Warren Keep in mind that the last firmware compatible with APM are Copter 3.2.1 and Plane 3.3.0.

Comment by Warren Purnell on April 8, 2016 at 3:14am
I want to upgrade to the last supported firmware for an APM. Could someone advise where I find the file please?

Comment by Bill Bonney on March 27, 2016 at 10:00am

We now have a new shiny discussion and support forum for ArduPilot and supporting projects at Please come visit us there for all things ArduPilot. We look forward to seeing you.

Full announcement @ here

Comment by Jasfer on March 24, 2016 at 4:01am

Im having a slight problem with my GPS unit. It's a NEO 6m. It was working fine before i updated its config file. Last night i upgraded its config file using the instructions written on wiki. It was all good then I checked mission planner. GPS is now getting more than 9 Satellite( im getting 11 now). When i checked my GPS. Its just solid blue now. The red or orange (sorry im colorblind) is not blinking anymore. Before, the LED is blinking if there's already a 3D fix.How can I make those LED blink again ? I checked mission planner, it has 3d fix but the led is not blinking.

Comment by Cala on March 18, 2016 at 8:00am

Thank's for fast response Stephen, is like the servo connectors? I try but it's looks that plastic tab doesn't move? they looks different, I'm going to share a photo.

Thomas, I hope you need this tool you can find in electronics shop too and the pins too

Comment by Thomas Stanley-Jones on March 18, 2016 at 7:52am
Along the lines of Cala's question, I would like to make my own wires for Jr connectors and Df connectors, but I haven't been able to figure out what the crimp tool is or where to get the pins that go on the end of the wires. Can someone point me in the right direction?

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Season Two of the Trust Time Trial (T3) Contest 
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