Tx rates for DJI setup question

DucktileMedia

Drone Enthusiast
On my JR 9503 I have 3 flight modes that are controlled by 1 switch. These all have varying rates for different conditions. But I want to verify that when using the DJI WKM or NAza that you are supposed to leave everything at 100% with no expos or throttle curves. So all of this will be changed via a flight mode setup on the controller end? Please advise.

thanks

Yuri
 

BorisS

Drone Enthusiast
I am not sure if i understand you correctly. With flight modes you mean you own personall radio based flight modes not those of the WKM as in Manual atitude gps ?

Boris
 

plingboot

Member
I set up a new model memory in the DX8 - default acro mode and assigned ch7 and ch8 to appropriate 3 position switches.

Next i ran the Tx calibration set-up in the WKM app and clicked finish. A, E and R need to be sitting centrally and with the arrows coloured green.

Mine were neither, so i adjusted the subtrim in the radio (NOT the travel). As i adjusted each channel i could see it moving in the WKM window. I did this until the arrows were green and central. Then i ran the calibration again to double check and all was/is ok.

With the three position switch for M, Atti, GPS - i set the switch to M and adjusted the end points (travel) in the radio until the M area went blue, i then switch to GPS and did the same. Finally i set to mid point - Atti and adjusted the subtrim. After doing that i rechecked the M and GPS positions on screen.

Hope that helps.
 
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DucktileMedia

Drone Enthusiast
On my Xaircraft there are gains on the software that you set, like all multis, but then I also have radio based settings that adjust my expo's and throttle curves. I was told from a friend with the DJI that you dont use radio based adjustments for gains, you have flight modes that you set up in the software that would be selected via the radio's switch. So basically, I dont want to add or change anything other than trim on the radio end, right?

To put it another way. do you always want the radio transmitting full 100% throw on each channel?
 

Kilby

Active Member
I think the answer is yes, but you can set up some expo with out causing any harm. I keep my end points at 100% and then set my expo to either 20 or 30, depending on the mission I have to fly and the weather.
 

Tahoe Ed

Active Member
I think the answer is yes, but you can set up some expo with out causing any harm. I keep my end points at 100% and then set my expo to either 20 or 30, depending on the mission I have to fly and the weather.

Kilby is correct you can set up expo's with no issues. If you change the endpoints that will be a problem. You may not be able to arm you motors.
 

RTRyder

Merlin of Multirotors
Kilby is correct you can set up expo's with no issues. If you change the endpoints that will be a problem. You may not be able to arm you motors.

You can setup TX based flight mode with varying degrees of expo and travel, I have all of my APV multis setup that way. Flight mode 1 is usually around 15 to20% expo and 100% travel, the middle setting I have at roughly 35% expo and travel limited to 80 to 85%, and for calm air I use 45 to 50% expo with travel set to 65 to 70% for the smoothest possible flight. Keep in mind that if you do set it up that way you MUST be in flight mode 1 to get the motors to start and stop, and if it's at all windy using mode 3 is usually not a good idea, sometimes not even mode 2 works all that well in the wind.

Anyway, if smooth video is the goal, setup 3 flight modes similar to what I use. The exact settings will likely differ as the airframe, flight controller, motors, and props are all variables that will affect what settings work best along with pilot preference. On my aerobatic quads I use no expo or travel limitations, they're 100% all the time and if I've been flying only the APV machines for a while the first couple minutes in the air with one of the aerobats can be challenging until my brain recalibrates to the control differences.

Ken
 

DucktileMedia

Drone Enthusiast
Ken, my flight modes on the radio for the Xaircraft were very similar to that. But I just reset everything on the radio so i knew I was starting from scratch. The Xaircraft would require 50% gains on the controller and very low expos on the radio to get smooth video. But if a wind of 5 mph or more came, it was frightening! So I guess for starters I will keep everything stock and make sure it all works. then start adding the modes.

thanks all

Yuri
 


BorisS

Drone Enthusiast
So you are able to adjust the slider in the config screen of the WKM or NZA tool by changing the % of the servo output ? What exactly are you not getting right ?

Boris
 

kloner

Aerial DP
I don't use the dr, but am using expo, and a ton of it. think last i looked was 60%. only way i could fly the thing manual

NAZA uses gear by default. in my radio under the main setup screen where you make a model had device settings, in there i can make whatever switch move whatever channel,,,, does your tx have that?
 
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BorisS

Drone Enthusiast
Switch you should be using is a three switch any on you radio and you have to assign it to your channel taking care of the flight modus. In order to get all three stages right for the three switch you have to adjust the center and travel - and +.

Step by step.

1. You have one three switch that is already controlling the flight modus and you can see in the Naza config that changin the position of the switch the slider for activation the different flight modes changes ?
2. You have something on the JR that lets you control the center travel - + of the servo output ? Some menu called servo adjust ?

I have a graupner mx 22 its similar to the JR you have just not sure about the menu software etc.

Boris
 

actually, I wasn't using the servo adjustment. I was using the travel adjustment (which may very well not be the right way to do this as you can tell). I can see in the Travel Adjustment window that when I change the switch position it flips to the right or left side of the window allowing for adjustment. That seem fine for a 2-way switch but where is the third element for the 3-way switch? I can't figure out how to make the necessary adjustments for the 3 modes with the one switch. Also: I am not sure which switch I should being trying to use either for this purpose.

Rancher I just did this on my DX7s...In my switch settings I changed my flap/gyro switch (which is 3 position) to gear. I have my 0 setting for attitude; 1 for failsafe; 2 for manual. I tested it and going from att to manual is not a problem. Only thing you need to do is adjust your settings so 0 and 2 hit the att/man settings in the application.

I was having a problem when I would switch out of att to man then back to att that I would loose signal and the thing would go into failsafe mode...When I checked it on my application I just had to move attitude a few clicks lower so it wouldn't interfere with failsafe.

Hope this helps. PM if you need further help.
 




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