Rudder and throttle woes
I have this Tx module, http://www.hobbyking.com/hobbyking/stor ... dule_.html installed into a HK 9x transmitter.
and am trying to get it to run this, micro Rx/servo combo
I have all the switches in the Tx module set at off. I have the stick mode set at 3, for rudder and elevator driven by the right hand stick for an airplane with no ailerons. That part works great.
The problem is, the rudder stick drives the brushless motor and the throttle stick drives a servo plugged into either of the servo outputs.
No combination of stick mode on the Tx and switches at the back of the module can correct this.
I have spent several hours and am stumped.
FYI, I'm pretty much a Newbie with electrics.
Lukasz http://www.hobbyking.com/hobbyking/s...s/thumb_up.png 21 points
The module works good with out-of-the-box 9XR. Be sure, however, to read the manual for the module, paying attention to 5 switches on the back. Using the module with the SuperMicro bricks make sure the switches on the module are in right positions.
Change what is plugged where so the throttle stick operates the motor and the desired stick moves the rudder....
Different brands use different channel orders. It is what it is.
Thanks guys, but,,
I have the manual for both units, they both describe how, what works. NO mention of where the switches go to resolve my problem. Only flipping aileron and rudder around. Or, setting up for V-Tail, or delta, aileron/elevator function, like that.
I did try Modes 1 through 4 to see what combo will give me aileron and elevator on the "brick" but the unit has a brushless controller built in. You solder your motor plug to that, and from there, the left hand, rudder stick controls the motor.
The REALLY odd thing is that the two servo outputs are labelled aileron and Aux but both respond to the throttle stick.
One thing I CAN do for the time being, is to hack into the Tx and rewire the pots, flip them, exchanging their function.
Set the switches back to factory default.
Change ONLY the one(s) to get to your desired mode.
Take the prop off the plane
Plug the ESC into what you think should be throttle... Power up and find which stick makes the motor run.
Move the ESC to a different channel if not right. Plug whatever control is appropriate into the channel.
Go through adding each channel plugging the servos to the correct ones by testing which stick makes the control respond.
Futaba channel order is Aileron, Elevator, Throttle, Rudder
JR/Spektrum order is Throttle, Aileron, Elevator, Rudder
Airtronics order is something else (forgot)
There is no rule about what has to be plugged where other than... make the stick do what its supposed to.
If its not a computer radio there is no issue with plugging things any way you want.
If you want to move the left stick left to go up its perfectly acceptable. It will work. (but no one else will be able to fly your plane or help you with the strange issues you might encounter)
Computer radios will cause a bit of an issue with unusual configurations because of built-in mixing.
Again, thanks and all you say is correct and fairly elementary. The thing is, the ESC is BUILT IN. You solder the motor plug to the board and plug the motor into that.
I do have discreet receivers and seperate ESCs and that may be the way to go but when you pay for a Tx module and it's Rx "brick" you expect to be able to use it. The thing is, the brick is so handy and will fit the plane I have most conveniently. Much like any Parkzone plane.
I'll have to go to HK's message boards to see if this problem has been encountered by anyone else.
I'm beginning to share your opinion very quickly. Built in configurations lack flexibility.
I have a foam, Citabria that I bought some 30 years ago that was rubber powered and made in Germany. Back then, I wished it could be converted to RC.
Sure glad I hung on to it because, here we are.
My, how far we've progressed.
Hope I still have that Spitfire, somewhere. :cool:
The problem is that the Turnigy Tx uses Futaba channel assignment, that is:
But ultra micro receivers us Spektrum/JR channel assignment:
If using a normal Rx this isn't a problem, you just plug the servos and ESC into the Futaba channel numbers, but for a U/M receiver 'brick' i know of no way to re-assign the channels. Unless there is some work around that the Turnigy 9X users have figured out then you are stuck, you need a Tx with Spektrum channel assignment.
With Ch5 that can be reassigned and mix capability maybe someone can come up with something, but I haven't put any thought in the idea and it probably won't work.
Thanks JPF, that explains a lot. The problem isn't the Tx module or the Rx brick, it's the 9x.
I suppose that's why HK has come out with a Spektrum style Tx.
Thanks to all, I have discrete Rx's for both the 9x and my real Spektrum. It is what it is and I'll proceed as necessary.
Got to get busy, the evenings lately have been dead calm.
I think i recall seeing one of those Hobbyking 'daily' video announcements that they were going to release a optional firmware update for their Tx's that changed channel assignment to Speky compatible (to resolve the exact issue that you are having).
I'm not sure if this was for the 9x or 9xR or both, or if it's actually been released yet. I think you had to buy a programming module that connected to the Tx to flash the firmware.... Might be worth looking into?
Thanks JPF, if so, I won't be stuck with some unuseable equipment. You have to hand it to HK, too.
When I first encountered them, I was amazed that they allowed comments on their products, good AND bad. And they leave a LOT of bad too, they don't censor anything, it seems.
Got to say too that we live in the best of times for our hobby. High quality at VERY good prices with innovative products.
I lost a lifetime friend, and mentor some 13 years ago. Jack was the first in the area to take up electrics. NICADS, brushed motors and clunky ESCs. Jack was a master builder, no one could build as lite as he did and his aircraft always performed to the max.
A real shame he missed out on what has come to pass.
Anyway,,, thanks again.
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