Turnigy TGY 9x tx transmitter,owners beware!


can you believe it?

after 8 long weeks, one return to 3dr and many attempts at solving I HAVE FLOWN.


Solution - was to reverse the throttle on the Turnigy TGY 9x tx AT the transmitter, NOT in Mission Planner

(I hate reversing throttle in any place - so probably not surprising I delayed fiddling with throttle)

this solved "no green bars to calibrate radio signals" issue in forum and several other erratic starup and setup issues


wow its so good to fly.


BIG thanks to all who helped - oh and the community wide.

Brett G


You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –


  • @R_Levfebre

    Was not obvious to me for a newbey in MP - low PWM for low throttle ? it's in the setup notes but not obvious for an essential step that if ommitted causes major drama - IMHO. probably would be best as a step in itself to test throttle pwm values. better described in troubleshooting though

  • @monroe

    all TGY 9x"s? I guess so. Jason's comment above that most ship the 'wrong' way arund means others are likely to have problems. If a person copies an existing model setup in Tx they won't see the problem. Make a new model and whamo you are back to default with wrong direction on throttle. That was my case and I reversed in MP resulting in more problems than a wet bar of soap/


  • Cool thanks for the update. I have had toy with my turnigy radio a bunch to. I still have a problem with channel 5. But it is flying great. Well I am still repairing for the bird collision last week.
  • Developer

    Almost all electrics expect low PWM for low throttle which is the opposite of how radios are shipped. The CLI test called pwm would have shown you that. Sorry for your troubles.


  • My advice is always do a thorough preflight.  Reversed channels are very easy to catch if you take the time.

    I had a reversed elevator that caused a crash on my first real flight attempt.  Like an idiot I did a silly preflight just for show and didn't bother to really think about which ways the elevator was being thrown.  Once in the air I still could have probably saved things if I had just let go of the sticks.  But not trusting the APM I tried to fly it normally and realized the channel was reversed right as it crashed.

    I swear things were right in the calibration screen and at some point in my shop testing.  So always double check that the channels are working right during preflight.  It really has nothing to do with the transmitter as this is easy to do with any setup.

This reply was deleted.


DIY Drones via Twitter
Dec 12, 2021
DIY Robocars via Twitter
Dec 12, 2021
DIY Robocars via Twitter
RT @chr1sa: Just a week to go before our next @DIYRobocars race at @circuitlaunch, complete with famous Brazilian BBQ. It's free, fun for k…
Dec 4, 2021
DIY Robocars via Twitter
How to use the new @donkey_car graphical UI to edit driving data for better training https://www.youtube.com/watch?v=J5-zHNeNebQ
Nov 28, 2021
DIY Robocars via Twitter
RT @SmallpixelCar: Wrote a program to find the light positions at @circuitlaunch. Here is the hypothesis of the light locations updating ba…
Nov 26, 2021
DIY Robocars via Twitter
RT @SmallpixelCar: Broke my @HokuyoUsa Lidar today. Luckily the non-cone localization, based on @a1k0n LightSLAM idea, works. It will help…
Nov 25, 2021
DIY Robocars via Twitter
@gclue_akira CC @NVIDIAEmbedded
Nov 23, 2021
DIY Robocars via Twitter
RT @luxonis: OAK-D PoE Autonomous Vehicle (Courtesy of zonyl in our Discord: https://discord.gg/EPsZHkg9Nx) https://t.co/PNDewvJdrb
Nov 23, 2021
DIY Robocars via Twitter
RT @f1tenth: It is getting dark and rainy on the F1TENTH racetrack in the @LGSVLSimulator. Testing out the new flood lights for the racetra…
Nov 23, 2021
DIY Robocars via Twitter
RT @JoeSpeeds: Live Now! Alex of @IndyAChallenge winning @TU_Muenchen team talking about their racing strategy and open source @OpenRobotic…
Nov 20, 2021
DIY Robocars via Twitter
RT @DAVGtech: Live NOW! Alexander Wischnewski of Indy Autonomous Challenge winning TUM team talking racing @diyrobocars @Heavy02011 @Ottawa…
Nov 20, 2021
DIY Robocars via Twitter
Incredible training performance with Donkeycar https://www.youtube.com/watch?v=9yy7ASttw04
Nov 9, 2021
DIY Robocars via Twitter
RT @JoeSpeeds: Sat Nov 6 Virtual DonkeyCar (and other cars, too) Race. So bring any car? @diyrobocars @IndyAChallenge https://t.co/nZQTff5…
Oct 31, 2021
DIY Robocars via Twitter
RT @JoeSpeeds: @chr1sa awesomely scary to see in person as our $1M robot almost clipped the walls as it spun at 140mph. But it was also awe…
Oct 29, 2021
DIY Robocars via Twitter
RT @chr1sa: Hey, @a1k0n's amazing "localize by the ceiling lights" @diyrobocars made @hackaday! It's consistently been the fastest in our…
Oct 25, 2021
DIY Robocars via Twitter
RT @IMS: It’s only fitting that @BostonDynamics Spot is waving the green flag for today’s @IndyAChallenge! Watch LIVE 👉 https://t.co/NtKnO…
Oct 23, 2021