no bars to calibrate radio signals (AC quad, APM2 board, Mission Planner, win xp)
Hi all,
I cannot see any green bars to calibrate radio signals (AC quad, new APM2 board, Mission Planner, win xp)
do you have any hints for me to debug or solve?
board has gps lock.
My thought is that the Mavlink comms is faulty one way (sending to APM direction?/bad cable)
New APM2 recvd. full board with new gps and fully soldered.
I loaded firmware for quad and APM2 easily with Oborne's Mission Planner.
then went to first step - set up of board and no green bars at all in display.
Radio says bound.
In terminal tab of MP, I get the radio values to vary with stick movement (though some appear to be large negative values at times). This is only occasionally - sometimes I cannot get into test mode.
(is there an order that things need to be done and connected?)
Terminal mode gives the 'weird' characters sometimes.
Any ideas would be most appreciated.
Other:
cannot see any CTS setting for comm port
would try another cable but cannot as connector is special
would try another PC but it develops another issue (Mission planner does not start)
I have been successful with APM 1
Replies to This Discussion
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Permalink Reply by Jake Stew on -
There is no radio in the APM2. You have to add a serial telemetry radio. Obviously you will not get radio signal readings with no radio.
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Permalink Reply by Brett Glossop on -
yes it has a radio Jake, thanks.
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Permalink Reply by Brett Glossop on
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I can now proceed thru setup by taking 4 of 6 rx cables out before initiating radio calibration and inserting them back live to get all channels calibrated. weird hey.
response from another thread of mine suggest it is more of a firmware issue of not being able to read receivers which buffer the outputs and output all channel values at once.
This might be worth the developers or engineers looking into.
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Permalink Reply by John Cousins on -
Are these problems when connected by USB or only when connected to the planner wirelessly via telemetry?
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DeveloperPermalink Reply by Randy on -
Brett,
What kind of receiver are using using? I didn't see it mentioned anywhere above, sorry if you've already said what it is.
-Randy
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DeveloperPermalink Reply by R_Lefebvre on -
Yes, I'd be curious about the receiver type. I've never heard of this buffering thing, but it wouldn't surprise me if that messed up the PPM encoder on the APM2, getting all the signals at once.
I wonder if this is happening because the Rx is set to output at a high framerate? Is that true, and can you try setting it to output at a low framerate?
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Permalink Reply by Brett Glossop on
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@John
probs when connected to usb. I now have limited and sporadic success with calibration, though convoluted procedure of rx cable pulling and reinserting.
@ Randy and R_Lefebvre
A Turnigy 9x tx and two turnigy 9 rx's tried - about 2 yrs and 1 yr old respectively.
@R_Lefebvre
Aren't most of the new 'advanced' tx -rx combos going down this path to reduce servo delay in big models? If so APM2 software may need to go this path too - a suggestion only.
Framerate: probably above my skills and patience with Turnigy tx's stiff buttons and lack of tx manual I'm afraid. But I shall take a look. One reader with Turnigy and APM2 has not had trouble. One with Futaba has similar prob. David D has similar prob with an AR8000 rx (tx unknown).
It seems, from others, that lower end or fewer channel rx's help or solve the problem.
all thoughts greatly appreciated as I know you guys are flying and I'm not :-(
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Permalink Reply by John Cousins on
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This might sound like a weird suggestion....but try putting some distance between the tx and rx. I had massive binding issues when the reciever was within 2 feet of the transmitter.
Long shot... but give it a go.
JC
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Permalink Reply by Brett Glossop on
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SOLVED!!!
can you believe it?
after 8 long weeks and many attempts at solving I HAVE FLOWN.
Solution - was to reverse the throttle on thTurnigy TGY 9x tx transmitter, not reverse in Mission Planner
(I hate reversing throttle in any place - so probably not surprising I delayed fiddling with throttle)
wow its so good to fly some.
Brett
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