I am very new to this but I have done a bit of reading prior to making this, my first post.
I am sorry for the insane amount of config information I am about to list here but from reading post after post I always find an experienced member always asking for it anyway. I will oblige to help...so here we go.
I have a PX4 running ArduRover 2.49 and MP 1.3.25
I have an inexpensive 6 channel Exceed CT6A RC radio and receiver. The radio was configured in Heli120, Mode 4. The channel mixing performed in the radio was not working for me so I have changed the configuration to Acro, Mode2 and removed any mixing. There are two pots (potA & potB) on the top of the radio. I do not have 3 way switches so I figured I would use those pots in lieu of switches.
I am looking to get skid steer set up working. I found this interesting thread:
First Rover build and troubles with Skid steering
A knowledgeable member, Thomas Coyle, laid out a fairly straight forward setup which I tried to mimic.
Here is how I connected the receiver to the multiplexer:
Receiver**************Multiplexer
CH1........................CH1
CH2........................CH3
CH3........................CH2
CH4.......................CH4
CH5 VRA...............CH7
CH6 VRB...............CH8
I ran calibration on all channels in MP
I have flight modes set to Auto Auto Learn Learn Man Man. I verified that I can sweep through all three modes with VRB
Found RCMAP parameters and changed:
ROLL=1
PITCH=3
THROTTLE=2
YAW=4
This part I was unsure of. I set both SKID STEER INPUT & SKID STEER OUTPUT to True. I was not really clear on whether both should be enabled when using a dual stick radio. I am not aware of any other type of radio except for the car type that have a small steering wheel on them. Lack of experience from a newb here folks.
I have not made any other changes to MP besides the setup tests performed by the wizard on initial start-up.
I don't have a dual channel ESC yet so I hooked up a BEC and two servos to get a visual representation of the PX4 output. One servo is on CH1 and the other is on CH3. Here is where I am lost.
a) On the radio calibration screen I do not see remapping take effect. Yaw moves Yaw on the screen. Throttle moves Throttle on the screen and so on. Is the calibration screen Pre or Post any re-mapping scheme?
b) In this configuration what is the left stick supposed to do? I was under the impression that stick would do nothing. However that stick does influence the servo connected to CH1 output. The servo on CH3 does not move at any time. CH3 does have a fixed PWM that is not influenced by any control movement. I can hear the servo try to correct itself if I gently press on the servo arm. I thought all control for a skid rover would be performed with only the right stick. Am I wrong?
c) How should the two skid parameters be set with my hardware setup?
I have attached a config file.
Anything else I missed? Thanks a ton for any help.
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