Comment

Comment by healthyfatboy on April 20, 2013 at 11:52am

Good to know. At least that helps me know there is something wrong, specifically with what I have. I'll keep troubleshooting it at some point if I feel like it. I just use a UBEC right now so that is good enough for now.

Admin Comment by Thomas J Coyle III on April 20, 2013 at 11:42am

@healthy,

Presently on my Slash rover with the APM2.5 I am running the stock brushed ESC and 550 brushed motor for testing purposes, but I have a Traxxas brushless ESC and brushless motor to install shortly. On my E-Maxx rover I am running an APM1.4/Oilpan configuration with a split power bus and a CC Mamba Moster ESC and a NEU brushless motor. Both work fine. Don't know why you are having trouble with your stock setup.

Regards,

TCIII

Comment by healthyfatboy on April 20, 2013 at 11:36am

Are you running the stock ESC? I want to say I read somewhere else you were using a Castle but I can't remember. That could explain the difference, not that it should make a difference but it's possible.

Admin Comment by Thomas J Coyle III on April 20, 2013 at 9:08am

@healthy,

I am running my APM2.5 from the PM which is connected in parallel with the rover battery that also powers the rover ESC. I have removed the J1 jumper so the PM only powers the APM2.5, receiver, gps, compass, and telemetry. The BEC on the ESC powers the APM2.5 output rail which supplies power to the steering servo. I have never had a problem with this combination. I also have an APM1.4/Oilpan with a split power rail where a stand alone BEC powers the APM and accessories and the BEC in the ESC powers the APM output rail and I have not had a problem with that combination either. If you are going to use the PM and the BEC in the ESC you must have jumper J1 removed.

Nice to hear that you got a successful run!

Regards,

TCIII

Comment by healthyfatboy on April 20, 2013 at 8:31am

Oh, and I ran the rover again last night. This time, I ran a quarter mile loop near my house and it did great! Keeping up with it at 4 m/s was the hardest part.

Comment by healthyfatboy on April 20, 2013 at 8:31am

Tom,

From what I have read, I understand you are using the power module on your APM correct? If so, have you had any problems with it? Just for fun, I tried it out again last night and it didn't work. Thinking it could be a bad module, I tried the other one I have and that too didn't work. I assume it might be the combination of the PM with the stock, brushed ESC I'm using but it's hard to tell. I did swap the ESC out with another stock ESC but didn't try with anything else. I do have a CC Mamba Max I could try out but that resides in my race SC truck and I would rather not have to move things around if I can avoid it.

Comment by John Moore on April 19, 2013 at 7:55am

Sounds like this is going deeper an I need to discuss this in the build thread I will be starting which will contain my goals as well as questions.

 

Thanks for all help, I will be sure to notify everyone of the thread an the question at that time.

 

John

Admin Comment by Thomas J Coyle III on April 18, 2013 at 6:39pm

@healthy,

That is exactly the way it should be done like I said below. No mystery here.

Regards,

TCIII

Comment by healthyfatboy on April 18, 2013 at 6:27pm

If the grounds on the input/output side are all connected, you could always split out the signal wires on the pan/tilt and connect those to the gimbal ports and then plug the 5V/GND into the output that is powered by an external BEC.

Admin Comment by Thomas J Coyle III on April 18, 2013 at 6:19pm

@John,

I am pretty sure that the gimbal (chnl 9,10, or 11) servo power is from the APM and not the ESC powered APM output rail.

Read this Wiki concerning powering the gimbals: http://code.google.com/p/ardupilot-mega/wiki/Tracking

"WARNING: If you connect the camera servos to ch9,ch10,ch11 on the APM2.5 wiith APM Power Module, or any other dual supply setup with JP1 removed, power the servos via the PWM Outputs rail. ie. just use the signal lines. The APM PM is not intended to power servos, otherwise you could experience a brownout on the APM, causing a crash."

This should clear up your confusion concering where the power for the gimbal servos comes from.

Regards,

TCIII

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