sylvainp42
Newbie
I did this small guide after I figured out how to mix channels on the remote to use it with with my xr10 moa crawler. It took me 1.5 hours to figure it out since I couldn't find anything on the internet referring to the 9x used for crawlers.
The remote is the turnigy 9x v2 with hacked firmware.
The reason I went with that remote is that I wanted to go stick and didn't like the 4pl much for this use. The 9x is also quite cheap and you can get small and light compatible 3 channels receivers from hobbyking
I started by making some physical modification on the turnigy 9x. I blocked the left stick to only go up and down (used a small washer under one of the gold screw to prevent the bar from moving), I installed the right stick spring on the left stick so it return to middle by itself. Then I installed the friction bar on the right stick (the one from left channel and tighten it quite a lot) so it’s much harder to move it now and kept the spring for left and right travel on that right stick.
So stick configuration is now :
left stick
up-down throttle auto centering
Left-right blocked
right stick
up-down dig friction
left-right direction auto centering
Receiver setup
Then I used some old servo to figure out how to configure the remote to activate the dig properly. This can be done with motors but I find it much easier with the servos.
I’m using a hobbyking 3 channels receiver to save weight in my crawler. 3 channels is enough to control the direction and each esc.
Configurations on the 9x
Now i’m using this configuration
ail = direction
thr= first esc
ele= second esc
If you decide for a different stick configuration you will have to change the parameter accordingly.
The basic reasoning behind the configuration for a dig is that you will have to multiply the output of the dig stick to the one from the throttle and send this to the esc. In order to multiply, the dig stick must output something different than the normal -100 0 100 output. What you need is a 100 100 0 and a 0 100 100 curves.
This can be done in the menu page 7, the result is shown here
In order to do that you will have to create cv1 and cv2 and shown bellow
curve 1
curve 2
Now that we have usable value for dig to multiply the throttle with, we go back to page and create the output to each receiver channels
My receiver configuration is :
ch1 = direction or ail
ch2 = first esc
ch3 = second esc
I won’t go in the detail on how to edit and modify value in the menu but it quite easy once you learn how to use the d-pad and the menu and exit button.
The result will be something like this
First thing to know is that the output for ch2 and ch3 are identical except for the curves used in the multiplication, one use curve c1 and the other curve c2.
So start with ch2 and configure the first line as the throttle stick with these configurations
As you can see the only thing I did was change the source to the stick I’m using as throttle.
Now we need to create the line 2, or the one used for the multiplication with the dig stick (in my case it's ELE).
To do that you need to add a second line for ch2 and then edit it so the source is now your dig stick, the multpx is changed to multiply and the curves is set to either c1 or c2 that you created before. Here is how it should look.
You need to do the same configuration for ch3.
Once done you should end up with this configuration that I previously shown
It’s now time to test the configuration with either you servo test setup or your esc and do the c1 and c2 adjustment so the dig stick position activate the proper position.
As needed you can also adjust the end limit and the trimmer in the page 6.
I started with these value and fine tuned as needed. Keep in mind that even if the value of the limit can go up to 125%, going over 118 119 can cause cross channels interferences. If you get glitches running the crawler try to back theses value down a little.
There is also a way to use a 3 position switch to override the dig stick if this have any use for you. For that you will have to do a new mix that will replace the ELE value with the switch you select. I recommend not playing with that for now but once you get everything working you can try some variation of this configuration.
Hope it will help some here.
IMPORTANT : don’t forget to do a proper esc calibration once you connect the receiver to the esc.
If you prefer, the original post on my blog is there : How to setup a turnigy 9x remote to control a rc moa crawler dig | Blogue de Sylvain Paquette's Blog
The remote is the turnigy 9x v2 with hacked firmware.
The reason I went with that remote is that I wanted to go stick and didn't like the 4pl much for this use. The 9x is also quite cheap and you can get small and light compatible 3 channels receivers from hobbyking
I started by making some physical modification on the turnigy 9x. I blocked the left stick to only go up and down (used a small washer under one of the gold screw to prevent the bar from moving), I installed the right stick spring on the left stick so it return to middle by itself. Then I installed the friction bar on the right stick (the one from left channel and tighten it quite a lot) so it’s much harder to move it now and kept the spring for left and right travel on that right stick.
So stick configuration is now :
left stick
up-down throttle auto centering
Left-right blocked
right stick
up-down dig friction
left-right direction auto centering
Receiver setup
Then I used some old servo to figure out how to configure the remote to activate the dig properly. This can be done with motors but I find it much easier with the servos.
I’m using a hobbyking 3 channels receiver to save weight in my crawler. 3 channels is enough to control the direction and each esc.
Configurations on the 9x
Now i’m using this configuration
ail = direction
thr= first esc
ele= second esc
If you decide for a different stick configuration you will have to change the parameter accordingly.
The basic reasoning behind the configuration for a dig is that you will have to multiply the output of the dig stick to the one from the throttle and send this to the esc. In order to multiply, the dig stick must output something different than the normal -100 0 100 output. What you need is a 100 100 0 and a 0 100 100 curves.
This can be done in the menu page 7, the result is shown here
In order to do that you will have to create cv1 and cv2 and shown bellow
curve 1
curve 2
Now that we have usable value for dig to multiply the throttle with, we go back to page and create the output to each receiver channels
My receiver configuration is :
ch1 = direction or ail
ch2 = first esc
ch3 = second esc
I won’t go in the detail on how to edit and modify value in the menu but it quite easy once you learn how to use the d-pad and the menu and exit button.
The result will be something like this
First thing to know is that the output for ch2 and ch3 are identical except for the curves used in the multiplication, one use curve c1 and the other curve c2.
So start with ch2 and configure the first line as the throttle stick with these configurations
As you can see the only thing I did was change the source to the stick I’m using as throttle.
Now we need to create the line 2, or the one used for the multiplication with the dig stick (in my case it's ELE).
To do that you need to add a second line for ch2 and then edit it so the source is now your dig stick, the multpx is changed to multiply and the curves is set to either c1 or c2 that you created before. Here is how it should look.
You need to do the same configuration for ch3.
Once done you should end up with this configuration that I previously shown
It’s now time to test the configuration with either you servo test setup or your esc and do the c1 and c2 adjustment so the dig stick position activate the proper position.
As needed you can also adjust the end limit and the trimmer in the page 6.
I started with these value and fine tuned as needed. Keep in mind that even if the value of the limit can go up to 125%, going over 118 119 can cause cross channels interferences. If you get glitches running the crawler try to back theses value down a little.
There is also a way to use a 3 position switch to override the dig stick if this have any use for you. For that you will have to do a new mix that will replace the ELE value with the switch you select. I recommend not playing with that for now but once you get everything working you can try some variation of this configuration.
Hope it will help some here.
IMPORTANT : don’t forget to do a proper esc calibration once you connect the receiver to the esc.
If you prefer, the original post on my blog is there : How to setup a turnigy 9x remote to control a rc moa crawler dig | Blogue de Sylvain Paquette's Blog
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