Everything seems ok, but my left motor isn't powering up. I can plug it into any other power port and the motor works fine, (example I plugged it into the rear motor and it runs good). It seem related to the power  distribution module, but it seems to check out ok with a meter but I am only checking for continuity not voltage, I don't really know what to check voltage wise so any Ideas or help would be appreciated.

I know the following;

The motor/esc works in any other location.
Motors from other locations don’t work in the left location

I can connect in the configurator and  it’s the only engine that will not respond to commands.

Views: 122

Replies are closed for this discussion.

Replies to This Discussion

Are you sure that all your outputs are working properly?? Have you been testing any other motors/ESC's on that same output port?

 Jani, when you say all your outputs I'm not clear what you mean, all engines work, but the output on the left engine does not work. How or what can I do to check that output? I have checked continuity using a volt meter to make sure there is no short but that is all I know how to check. Is there a better way to check the outputs? It's seem like a simple issue but I've been fighting it for a couple of hours.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

Steve, you cannot check outputs with volt meter. To properly check them you should have Oscilloscope to see their real PWM output. Ok you can do some basic testing for them. If nothing else you can always do a small sketch that goes from 0v to 5v every 1 second or what ever and that you can measure with volt meter.

 

PWM signal is a just small pulse that gives 5v output. Volt meter it too slow to see if it goes "down". Hmm maybe we could create some test pattern for those, let me think ....

Jani,

I use a  servo driver box to test my ESCs and motors. Servo driver boxs are a good tool to have in the tool box!

 

Regards,

TCIII

You can determine for sure if it's an ESC or PDB problem by swapping the left and right ESC.  If the problem moves to the right then you know it's a dud ESC and you should recalibrate it, if that doesn't work get another one!

 

If the problem doesn't move then it's a PDB issue...there are two connections between the PDB and each ESC.  The power (sometimes connected via a dean plug) and the 3 prog servo-wire.  You could determine which of the two is the problem by swapping the power connection on the problem ESC with the power from the back ESC.  If the problem is fixed then you know there's some kind of break (bad soldering perhaps?) on the power connection for the left motor.  If the problem remains then you know there's some break or mistake on the wiring of the servo wire, it's connection to the PDB or the control wire from the PDB to the APM.

 

-Randy

Thomas, true but ESC's are already connected to "tester". We just need better test program for it. There are already test program inside ArducopterNG. But this is about to test physical output in a way that you can test and see if it is working with multimeter or not.

Thanks for your help, I found the problem, it was a bad deans connector, if you pushed it fully together it would not make a connection, it seemed like it was ok but checking with a volt meter confirmed that the voltage was not passing through the connector, if I slide it on partially it's ok...

I removed it and put another one in its place and all is fine. Visually you cannot see any problem with the connector I removed and it did have continuity when checked with a meter so it was a little difficult to solve.

  Thanks for your help, I found the problem, it was a bad deans connector, if you pushed it fully together it would not make a connection, it seemed like it was ok but checking with a volt meter confirmed that the voltage was not passing through the connector, if I slide it on partially it's ok...

I removed it and put another one in its place and all is fine. Visually you cannot see any problem with the connector I removed and it did have continuity when checked with a meter so it was a little difficult to solve.

RSS

© 2019   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service