NO PWM SIGNAL OUT - Arming Issue ? on Pixhawk (Rover) - Help - Discussions

Hi All,

I've been tearing my hair out trying to solve this problem .

Currently trying to setup my Pixhawk (latest firmware).

I have calibrated the radios and am attempting to manually control my tank bot . The pixhawk is configured with rover configuration - skid steer.

At the moment there is now PWM signal on my main out pin 1and pin 2

RCMAP_PITCH 3

RCMAP_ROLL 1

RCMAP_THROTTLE 2

RCMAP_YAW 4

output on Radio channel 1/2

I can see the values on Mission planner change but I dont see any pwm signal on the output pins

(I have an Oscilloscope hooked up)

The weird thing is ...is that I did managed to get a pwm signal after going through the wizard setup on one occasion (after all the checklist) . Was not able to get the signals again after that.

Is there some arming procedure that needs to happen ?

Cheers

Esa

Thank you Thomas !

I reinspected my cables and noticed I had a pin out mismatch on the pwm signals.

I can move the robot freely now in manual mode.

I do have a few more questions.

Why is it that when I Arm/Disarm the rover I cannot hear any sound ?

The only sound I hear is the startup music + a long beep upon power up.

I also cannot arm/disarm via Mission planner . Under Flight Data -> Actions Tab ...when I click the arm/disarm button I get a "Error: command rejected by MAV"

I'm also having problems setting up the battery failsafe voltage

under Initial Setup -> mandatory Hardware -> Failsafe the low battery and reserved mAH boxes are greyed out

I'm running a 3s 5200 mAH battery

currently the low battery value is set to 13.1 V , which is too high I can't set it to 10.2 V as the box is greyed out

Also what should I set for reserved mAH ?

Also since the low battery value is currently at 13.1V why is it that I don't get a warning on the ground station or the buzzer sounding.

In the Optional Hardware -> Battery Monitor Section . I currently have the MP alert on low battery checked.

I have the Monitor set to Voltage and Current (4)

Sensor -> Other (0)

APM Ver Pixhawk (4)

Cheers

Esa

Replies

Esa Attia September 3, 2015 at 7:20pm

Anyone ?
Admin

Thomas J Coyle III August 21, 2015 at 4:17am

@Esa,

There will be no output from the Pixhawk until the arming button is solid and not flashing red.

Regards,

TCIII AVD
- Esa Attia > Thomas J Coyle III August 27, 2015 at 12:33am
  
  Thank you Thomas !
  
  I reinspected my cables and noticed I had a pin out mismatch on the pwm signals.
  
  I can move the robot freely now in manual mode.
  
  I do have a few more questions.
  
  Why is it that when I Arm/Disarm the rover I cannot hear any sound ?
  
  The only sound I hear is the startup music + a long beep upon power up.
  
  I also cannot arm/disarm via Mission planner . Under Flight Data -> Actions Tab ...when I click the arm/disarm button I get a "Error: command rejected by MAV"
  
  I'm also having problems setting up the battery failsafe voltage
  
  under Initial Setup -> mandatory Hardware -> Failsafe the low battery and reserved mAH boxes are greyed out
  
  I'm running a 3s 5200 mAH battery
  
  currently the low battery value is set to 13.1 V , which is too high I can't set it to 10.2 V as the box is greyed out
  
  Also what should I set for reserved mAH ?
  
  Also since the low battery value is currently at 13.1V why is it that I don't get a warning on the ground station or the buzzer sounding.
  
  In the Optional Hardware -> Battery Monitor Section . I currently have the MP alert on low battery checked.
  
  I have the Monitor set to Voltage and Current (4)
  
  Sensor -> Other (0)
  
  APM Ver Pixhawk (4)
  
  Cheers
  
  Esa

This reply was deleted.