Getting Pixhawk to work with Emax

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- garvarma > Aldo Vargas July 31, 2015 at 1:53am
  
  Hi Aldo,
  
  Do you say if remove these two resistors, then emax will be compatible with pixhawk?
  
  Do you test it? do you have any video or something?
  
  thanks
  - Aldo Vargas > garvarma July 31, 2015 at 6:50am
    
    yes, remove those components, one is a capacitor and the other a resistor... after that, arming/working with pixhawk is doable.
    
    I dont have a video, its really and easy fix.
    
    good luck.
    - garvarma > Aldo Vargas July 31, 2015 at 2:52pm
      
      Hi Aldo o Hola,
      
      I opened mu Emax 4in1 of 30A and it's little differents than yours i don't know recognise those components
      
      Here i attach a photo of mine
      
      Can you help me?
      image.jpg
      - Aldo Vargas > garvarma August 2, 2015 at 6:22am
        
        maybe is easier if you contact EMAX support... they might know exactly which ones to remove, with the single one is easier, this one is a bit more complex...
tonypascal February 26, 2015 at 1:49pm

Hello,

It now obvious that there is a problem on with this Emax 4 in 1 ESC. It seems that it does not work with the Pixhawk. Plenty of people are having this problem.
I am trying to consolidate all the information I found on this problem.

There are other opened posts on the same subject :
http://diydrones.com/forum/topics/getting-pixhawk-to-work-with-emax
http://diydrones.com/forum/topics/emax-simonk-esc-on-pixhawk-runnin...
http://diydrones.com/forum/topics/emax-simonk-esc-on-pixhawk-runnin...
http://diydrones.com/forum/topics/pixhawk-with-emax-4in1
...
Most progress have been done here:
http://ardupilot.com/forum/viewtopic.php?f=21&t=5784&sid=1f...

It is very strange since the ESC has the SimonK firmware, and that every other ESC seem to work with the same firmware. It is maybe a modified version.

Anyway, here is my config:
-TX: Frsky Taranis (with latest fw)
-RX: Frsky D8R
-ESC: EMAX 4in1 25Ax4
-Pixhawk FC with GPS (ArduCopter 3.2.1)
-3S 3000 mAh battery

I can indeed calibrate the ESCs when I connect them directly to the radio.
And the Pixhawk doesn't seem to communicate with the ESCs. Somethings happen when I plug some servos to port 5 and 6 (for gimbal), but still, not motor rotation...

I hope this can be solved quickly.
Tony
- tonypascal > tonypascal February 26, 2015 at 11:44pm
  
  Hello all,
  
  I took the problem the other way. I asked EMAX why it doesn't work. I wrote them an email and here is their answer:
  
  "The current 4 in 1 ESC 25A doesn't support Pixhawk, we had noticed that and are currently modifying the firmware and doing test so that the new firmware will be compatible with Pixhawk flight controller. We will finish test in around a week. I will keep you posted about it."
  
  So, hopefully, we should have some news next week.
  
  Tony
  - garvarma > tonypascal July 22, 2015 at 12:21pm
    
    Any solution after few months? because i can't do anything... I'm think that i will change my emax 4in1 by qbrain...
  - Sam Smock > tonypascal March 16, 2015 at 5:00pm
    
    Did you have any luck on this?
    - Anmh > Sam Smock April 12, 2015 at 2:47am
      
      Waiting for the solution? :(
  - Wilhelm Matilainen > tonypascal February 26, 2015 at 11:48pm
    
    Well, finally.

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Getting Pixhawk to work with Emax

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