Thanks for your review of the V2 version of the 9x. I'm very glad you confirmed that it is a FHSS system.
This is a slightly revised version of a review I made of the firmware changes between a V1 and V2 Turnigy 9x, originally posted on RCGroups. I own both versions, so I'm very familiar with the shortcomings of the original firmware.
Expo and Dual rate now work correctly. Before, in V1, it looked as thought they did in the DR/Expo menu, but if you added even 1% of expo, the dual rate went to 100% no matter what it was set at. This was verified at both the Display screen, and with servos. You could have expo, OR a dual rate, but not both.
Ailevator now works correctly, at least for dual elevators. Plug servo one into the elevator channel, and servo two into channel 8. Set both to 100% in the ailevator menu (Leave ailerons at 0% unless you also want the ailerons to act as elevators!).
You CAN now mix an Aux channel to a main channel, and it works, using the Aux channel as the master. I mixed each of the two aux's to rudder, and they both worked. Of course I had to assign the auxes to a knob or switch in the AUX-CH menu.
The following bug is NOT fixed:Mixing a channel to itself still does not work. While you can, for example, set a throttle to throttle mix in one of the two curve programmable mixes, nothing happens either in the Display menu, or at the servo. A real shame since there isn't a throttle curve in the airplane mode.
Unconfirmed:I have not played with the Butterfly mix, as I am not that familiar with how it is supposed to work.
The trick to show what firmware is loaded still shows V14 and COOL with a bunch of Chinese characters. (Same trick as the first step in the stick calibration sequence, below).
I did have a significant problem where I had aileron stick deadband in both directions from half stick movement on. It maxed out movement on the Display screen and at the servo at half stick movement. The sticks were not calibrated correctly from the factory. I fixed this using the instructions from a German forum, here:
http://www.rclineforum.de/forum/thread. ... r=&page=28Here is my description of the procedure to calibrate your sticks (use their pictures):
First of all, ONLY do this if you are having problems with stick movements as I described in my posts above. If you screw up your tx, it's not my fault!!
Push the right lower trim tab to the left (aileron on a mode 2 TX), and the left side trim tab up (Throttle trim on a mode 2 tx), and while holding them, turn the Tx on. You will get a screen that shows the version number of the firmware, with four zeroes (0000) at the top of the screen. Center both sticks in their range in all axis, and press the menu button until it beeps and release. The screen number will change to 0001 Move the right stick to the upper right corner, and press menu, and you should get a beep, and the number on the screen will change to 0002. Put the right stick in the lower left corner, and press menu, and get a beep, and the number will change to 0003. Release the right stick, and put the left stick in the upper right corner, and press menu, get the beep, and the number will change to 0004. Put the left stick in the lower left corner, and press menu again, get the beep and the number will change to 0005. Center both sticks, and press menu, get the beep. You are done calibrating the sticks.
While at the same screen, press the + key, the screen will change, and you will get the position of the controls in hex code. You can see the numbers change as you move the sticks or knobs. Press - to go back to the firmware version screen. Exit the firmware screen, and go to the Display menu item. As long as you haven't turned the TX off, you will see the hex codes for stick positions for the 4 primary controls. Once you turn the tx off and back on, and go back to the Display menu item, the numbers will disappear.
BTW, I have a Turnigy V1, so I know well what it could and could not do (I now have Thus's firmware on it). HK has made a significant improvement in the V2 firmware. However, quality issues still exist, as I mentioned about the aileron stick. I REALLY wish I could mix a control to itself and have it work, so I could get a throttle curve. Now I need to fly the new V2 receiver/module combo.
Here are a couple of links for a .pdf version of the manual for other badged versions of the 9x:
http://www.skyrc.us/pdf/imax9x.pdfhttp://www.r2hobbies.com/manuals/rcps61207.pdfI, too, love the feel of this transmitter. The sticks are amazingly good for non-ball bearing units. And for $59 US, it is an incredibly great deal.
Jon