Discussions

Radio Calibration problem with Pixhawk

Posted by Attila on February 2, 2014 at 12:18pm

I have a 3Drobotics Y6 copter with Pixhawk.

I am relatively newbie to quads. This is my first big drone.

I am done with assembling the hardware and while calibrating the hardware in Mission Planer 1.2.93 i encountered issues with Radio Calibration. Everything else calibrated properly.

I have a FlySky FS-TH9X transmitter and a FlySky FS-R8B 8 channel 2.4GHz receiver.

The transmitter is bound to the receiver, i can drive servos with it.

The receiver is getting power from the Power distribution board and the receiver's channel 1 is connected to Pixhawk RC IN.

The Pixhawk Main Out Signal pins are connected to the Power distribution board Motor outputs (six colorful wires).

Does my receiver support PPM? Do i need a PPM converter?

Any ideas what I am doing wrong?

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RC.jpg

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flysky, pixhawk, rc, calibration, mission, planer, radio

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Replies

Alex Buckley April 25, 2017 at 11:00am

I just converted my quad to a rover after a couple years and now i have this problem again.

Can not remember the solution....?
Richard Manley June 28, 2014 at 8:11am

I just bought the 3DR DIY Quad with a FS-TH9X radio and a FS-R8B receiver. The assembly went well althe way up to the Radio calibration. When I got to the cal screen nothing happens, no green or red bars. I have bound the tx and RX, but no change. The Tx is set to Aero and PPM.
Do I need a converter? It sounds like this was the fix for you. Why is a PPM converter nessisary is the radio is PPM?
Thanks
- John Holdsworth > Richard Manley June 28, 2014 at 8:36am
  
  I did check and you do need a converter...when you get one did press the arm button before trying to calibrate I spent ages with this issue until I read a post some where.
  - FerrosonicFPV > John Holdsworth September 9, 2015 at 9:51am
    
    I've tested hitting the arm button prior to calibration and this does not seem to have any effect
Attila February 4, 2014 at 9:30am

In the meantime I tried three different receivers all binded to the transmitter and working with servos on the individual channels.

Than I installed APM Planer on my Mac too. I Installed the Firmware again and tried to Calibrate the RC when i start the calibration the green levels show up on the grey bars for a flash second than they are empty and all the values are 0 on the end of the calibration.

My transmitter signal pin outputs a voltage between 0.29 and 0.34 V.

Any help would be appreciated.

Thx
- Attila > Attila May 11, 2014 at 9:14am
  
  Yes, I needed PPM converter between the Pixhawk and the FlySky FS-R8B 8 channel 2.4GHz receiver.
  - FerrosonicFPV > Attila September 9, 2015 at 9:49am
    
    I cannot get my PPM converter to work.
    
    I have followed the videos but no luck
    
    http://www.ebay.com/itm/251899000134?_trksid=p2057872.m2749.l2649&a...
    
    this is the converter I am using with my FS-R8B
  - Greg > Attila May 29, 2014 at 12:30pm
    
    Hi Attila,
    
    I have the same setup and have been experiencing the same issues. Is fitting the PPM converter fairly simple? I presume you attach the 3 pin end to the R/C on the pixhawk and the corresponding channel numbered pins to the pixhawk.
    
    Thanks.
    - Attila > Greg May 30, 2014 at 9:03am
      
      Yes, that's correct.
      - Greg > Attila May 30, 2014 at 11:20am
        
        Thanks!