I have the TH 9X channel transmitter, and the biggest problem I have with this remote is the most accurate way to change flight modes is by flicking one switch so whenever I want to change a flight mode I have to change flight mode 6 because flight mode 1 is always stabilize and simple mode, now this gets a bit irritating so one day someone posted a blog here of a potentiometer with 6 clicks and some variable resistors to each click on the potentiometer so you can define the PWM. I bought this for about $15 here and it was at my door in about 4 days, it was crazy. I bought the unsoldered version so I had to do some fine soldering.
Now the variable resistors has 3 legs (+) (Feedback) (-) it does not matter which way is the plus and minus. I took an old parallel cable from an old hard drive mounting and cut 6 strips from it about 10cm long and cleaned the plastic from it and soldered the two most outer wires from the bunch to the (+) and (-) and then Is soldered to all of the pins a piece of wire.
Once all that was done, I soldered the 4 inner wires to a number on the potentiometer, and the previous potentiometers brown wire where it said brown and the black to the black and red to the red. I then soldered the 2 most outer wires to the black and the red.
I then broke of the previous potentiometers plastic housing and drilled a bigger hole in the cover so that the new potentiometer can fit. Please note the extra smaller hole on the left hand side of the big one that I made, it is so that the new potentiometer fits snug into the hole.
I then fitted the nozzle thru the whole tightened it with a nut on the outside.
I then found a nice place to hot glue the variable resistors to the back of the cover so it is easy to come by with a screw driver because you have to adjust the variable resistors so that the signal is set to the correct PWM for the specific flight mode.
And then I started tuning the inner flight modes because the most outer two knob settings is always flight mode 1 and six and knob area 4 is also always flight mode 1. First set your aux-ch option to the following. Please note channel 5 is set to Pit trim.
I opened flight planner and started turning the variable resistors on each unit until the green on the dropdowns showed on the correct place.
An now I have 5 accurate flight modes to choose from without any hassle.
Hope it was help full and happy flying.
Comments
Post some pics, like to see what you mean.
I have no idea my electronic skils is not that good, maybe ask the seller and then add the response here on the forum so I also know.
Yea, why is the last mode (6) unchangeable?
I am glad, you will se you have one dead click what you cannot change, that is normal.
Thanks yeah, one should actually grind that down, then it will fit flush and the knob will too. Ah well, it's working :)
You can see it in the 3rd image top left corner of the cage
O yes I drilled a small hole for that one to fit.
My rubber nob is not flush on my tx there is about 4 milimeter gap between it.
look at this pic http://www.xenonflashtubes.com/ebay/uni6pos-diy.jpg in the foreground side of the knob, there's a pin pointing up.
Thanks yes I've doen that - broken the "cage" of the old knob to make room for the new, but there is still a long pin that protrudes from the base of the new knob upwards into the back of the front tx cover. I'm now making a hole to accommodate, unfortunately I've broken through the front somewhat but ah well.
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