HI,
I defiantly agree with you, its very expensive machine and it can be very dangerous if lost the connection in the middle of the flight!
its big and mess
I didn’t change the connections between the ESC, BEC and the Pixhawk,
I only removed the cable that was connected to RCIN that was connected to the old Frsky Sbus RX
the ESC connected to Pixhawk main out Pin 8
BEC to Pixhawk Main out Pin 6
the Telem1 connected:
Telem1 Pin1 5v to pin2 5v (Elrs)
Telem1 Pin2 MCU TX to Pin4 RX (Elrs)
Telem1 Pin3 MCU RX to Pin3 TX (Elrs)
Telem1 Pin4 not used
Telem1 Pin5 not used
Telem1 Pin6 Ground to Pin1 Ground (Elrs)
the Mission planner showing me (DISARM) but when I flip the CH8 switch in my radio the motor start spooling up!
I still can ARM and DISARM by pushing the RUD right but its not effecting the motor or anything!
I used to flu Futaba RX but last year I crashed my 450 heli when my futaba radio and the futaba RX lost the connection.
so I switched ti Frsky RX, its good but I burned my Futaba Radio last week, and now I have the tx16s rasio but is not connecting to Frsky TFR8SB, I spent 5 hours with it and not binding!
I just ordered the new SuperP 14CH RX Elrs 2.4 they clime its a long range diversity antennas with solid connection!
I am still waiting for the Module to arrive ( BETAFPV ELRS 2.4GHz Micro TX Module - 1W)
that need few hours to set them up
Bill,
this is making me think that there is passing through signal to start the motor directly from the radio input!
I see in the mission planner, radio calibration setting;
when I push the Thru stick up the Thru bar go up
when I flip Ch8 it will show the moving bar going right!
so maybe the Telem1 that I am using is set the way that pass through the signal to the motor?
Thank you
the fact that it went into failsafe in front of you would be enough to carefully check the whole radio system from the ground up (so sw setup and electrical connections). Again, trust only devices that you have previously flown without issues.
I replaced the EP1 RX with the new ELRS 2.4Gh SuperP 14CH Rx and changed back to S-bus setup!
I feel little better know! its nice RX
I hovered the Heli today, its not stable, drifting to the left and little forward,
its touchy still and the tail is touchy too, it may need more RPM for sure to keep the tail without kicking, I may go to 85% for the H_RSC_SETPOINT
I had to force the control to keep it up, it was feel like flying without FC
the bird feel good regard the smoothness, but don’t want to fly it again before your recommendations .
I have attached the log, please if you or Mr Bill have sometime take a look at it…
I would suggest try the following:
ATC_RAT_PIT_FF to 0.1
ATC_RAT_PIT_P to 0.005
ATC_RAT_RLL_FF to 0.075
ATC_RAT_RLL_I to 0.075
ATC_RAT_RLL_P to 0.003
edit: is the FlightControl correctly aligned with the frame & orientation? Swashplate driver at 90deg exactly?
Also, it is good practice to clear missions from the autopilot memory
@flyingdragon disregard my ATC values suggestion for the moment. Can you please check the swashplate setup in terms of initial phase angle first.
Proceed like follows:
put one blade over the tail boom (precisely aligned- fork and blade must be perfectly straight and exactly parallel to tail boom).
set H_SV_MAN to 1 (passthrough) and give some pitch input (so rock the cyclic forward and backward, being careful to not move roll while doing this).
observe the blade over the tail boom. If things are good, there should be no incidence variation from fully back to fully forward cyclic position.
Ferrosan,
I did exactly what you suggested in your last post, the different is 0
Using cheap Digital Pitch gage, first time was showing Pit dwon ; ~ 4.7 and Pit up arround - 5.7 but …then I tried it moving the stick very slow, its showing me 0 different ( -4.8 up / + 4.8 down)
the gage giving me different number evey time!! .02 ~ 04 sometimes -0.03 at the Mid stick
I think that becasue of the servos accuracy, every time the servo return to different point…
Servos using: BK BLS-8001HV
I had to slowly moving the Syclic stick at the mid point to get back 0.00 then move up and down
the result is 0 different
otherwise the gage should read same everytime moving the stick without the need to re cyclic the servos arround the ceneter mid stick.
yes I have the Pixhawk mounted in the center under the Shift.
I will delete the Auto mission, I forget it since 2019…
the swash is 90, but I will double check this is a good point!
As far as I know, the blade must not move at all at this moment?
If the blade moves at this moment, the phase angle is not correct.
If your blade moves at the “pitch” input ±4 degrees, then the pitch angle is definitely not correct. It should not move at all.
We are talking about the blade that you have positioned exactly above the tail boom. It should not move at all when you enter pitch forward or backward.
The secret to all multi-blade rotor heads is proper tuning of the phase angle. This, however, is again very simple with the method blade over tail boom. I only fly scale helis with multi-blade heads.
Exactly, it appears there is significant phase error. That’s why I asked to perform this check, looking at the last log uploaded here, I can see symptoms of this problem.
Hi all,
as a newbie in ardupilot I try to read and learn as lot as possible and so also this thread.
By your last statement @heri and @Ferrosan you are talking about cyclic pitch, correct?
Maybe @flyingdragon moved not the cyclic but the collective pitch stick on his control.
Just only an idea.
BR
Juergen
I don’t think so, since he talks about ±4.7 degrees, which are typical values for a cyclic pitch. Typical values for a collective pitch would be e.g. ±12 degrees or -3 degrees to +12 degrees.
I always try to read all the posts in our subforum. This helps me gain more and more knowledge, even if I think the particular problem does not affect me.
