Replies to This Discussion

Permalink Reply by Ken on January 1, 2011 at 9:06pm

Right, that is what I was trying to say...everything on the receiver is upside down. (except AUX2 if it is 3 wires) I don't have an AR8000, but the 3 spektrum RXs I do have, when the branding/label side is up, the signal pins are the upper/inner row and the ground is the lower/outer row. So it looks like he plugged all the Arduino inputs into the RX ground pins.

 

But looking again, even the AUX2 looks odd: from the top brown, black, red. I hope that is just shadows and compression. Or is it just power/ground with no signal?

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AdminPermalink Reply by Thomas J Coyle III on January 1, 2011 at 11:16pm

@Ken,

Take a close look at the top of the label on the AR8000 receiver. Notice that the label shows: "-", "+", "_| |_". That means that the receiver output signal is on the bottom pin which is the reverse order of my AR500, AR600 and AR7000. I also have an AR8000 and it is definitely the reverse of my other Spektrum receivers.

Regards,

TCIII

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Permalink Reply by Ken on January 2, 2011 at 2:14am

Yep. I see it now, between ELEV & AIL.

Good consistency across product lines. Not.

 

So, I'm out of ideas.

Permalink Reply by Andrew Bailey on January 2, 2011 at 3:53am

It is odd I know, but that is the way the AR8000 is set up. i.e. the reverse of other Spektrum receivers. I have tried a AR6200 as well and this gives exactly the same result.

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DeveloperPermalink Reply by Randy on January 1, 2011 at 5:03pm

The CLI ESC calibration routine only works with the FahPah ESCs.  For other ESCs you'll need to calibrate them using whatever instructions came with the ESCs.  this will probably involve connecting the ESCs directly to the Receiver.

 

As a test that you haven't broken anything, how about switching back to the original motors and ESCs that were working fine?

 

If you have a voltmeter can you check the voltage comiung out of the ESCs?  probably best to check the voltage coming out of the power cable that comes out of the power distribution board.

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Permalink Reply by Andrew Bailey on January 2, 2011 at 3:44am

Hi Randy. I have tried setting it up with the other (original FahPah) ESC's and the power distribution board. Exactly the same result. The bottom line is that unless the APM recognises a signal output from the receiver then it makes no difference at all what ESC's are attached because nothing I do with the transmitter is passed onto the ESCs anyway.

 

I checked all voltages ESCs and an external BEC I have been using for testing and they are all within a smidge of 5.3v.

 

Thanks again for your help. 

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Permalink Reply by Andrew Bailey on January 1, 2011 at 7:00pm

Just noticed a couple of things in the CLI.

1. If I do a 'Calibrate min throttle value' it returns a value of 1200 irrespective of the position of the throttle stick

2. If I do a ''Motor tester with AIL/ELE stick' it immediately comes up with repeated
'Left Motor
Right Motor
Left Motor
Right Motor
Left Motor
Right Motor'

etc. without any movement of the right stick. Moving stick makes no difference at all. So it is as if the CLI is seeing repeated left AIL and right AIL inputs.

Don't know if this helps at all....

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DeveloperPermalink Reply by Randy on January 2, 2011 at 7:52am

Andrew,

     I'm afraid i'm out of ideas.  Better contact Chris and/or Jordi and point them at this chat.  Maybe they have some other ideas.

-Randy

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Permalink Reply by Andrew Bailey on January 2, 2011 at 1:03pm

Thanks everyone for taking the time to look at this for me.

I have separated the Oilpan from the APM and connected to the APM directly; still does not work. At least this means that I probably only have a bad APM, not the (expensive) Oilpan.

I am going to order a new APM which should have arrived by the time I return from holiday on the 10th. I will report back once I have soldered it up and tried it out.

Andrew

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Permalink Reply by Andrew Bailey on January 13, 2011 at 9:39am

Update on this problem. It seems like the APM was indeed faulty. A new one plugged into the Olipan worked just fine and my upgrade quad is flying. Thanks again to everyone who helped me on this.

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Permalink Reply by Robert LaRue on June 14, 2011 at 12:35pm

I think I have the same problem. Were you able to return the faulty one? Did they replace it or did you have to pay for a new one?

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Permalink Reply by Andrew Bailey on June 15, 2011 at 3:11am

Hi Robert. To be honest I did not think to try and return the APM to DIYDrones. I just bought another one and binned the faulty one. Good luck.

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