Replies to This Discussion

Permalink Reply by Jake Stew on June 1, 2012 at 8:12am

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.

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DeveloperPermalink Reply by jasonshort on June 1, 2012 at 8:27am

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.

Jason

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Permalink Reply by Kevin Christensen on June 1, 2012 at 8:34am

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.

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Permalink Reply by Jake Stew on June 1, 2012 at 11:34am

You have to turn on ch 5 in both Mission Planner and possibly on your 9X. If you follow the guides for setting up the 6 position mode setup on your 9X that will probably get it working. Double check again to make sure none of your channels are reversed. The elevator (ch2) bit me once.

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Permalink Reply by Kevin Christensen on June 2, 2012 at 9:04pm

Thanks for the reply. I will read through the guides some more. Channel 5 and the throttle channel move together. So I am not sure what I am doing wrong.

Thanks

Kevin

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DeveloperPermalink Reply by R_Lefebvre on June 1, 2012 at 8:47am

It may be true for Futaba too.  I had to reverse mine.  I don't really understand why the Tx manufacturers do this?  

I also don't understand what happened to Brett, because when my Futaba throttle is reversed, it was easily detectable in MP?  All the green bars worked, I could see it was wrong, and simply reversed it?

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ModeratorPermalink Reply by Mark Harrison on June 1, 2012 at 1:44pm

The 9x has the MOST confusing menus of any electronics device ever made.

If you go into the mode select menu, once you select the mode (e.g. 1 or 2), you get a prompt something like THR REVERSE.  If you press MENU it reverses the throttle, and if you press EXIT it doesn't reverse the throttle (or maybe that's backwards, I'm typing without my 9x handy).

Go to the DISPLAY menu option and you can check your throttle stick for proper orientation.

Smart people will tell you to upgrade to the super-excellent er9x firmware, but I haven't done so at this time.

I've secretly hoped that the 9x programmer went on to design nuclear power plant control software.

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Permalink Reply by Brett Glossop on June 1, 2012 at 3:09pm

@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/

.

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Permalink Reply by Brett Glossop on June 1, 2012 at 3:22pm

@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

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DeveloperPermalink Reply by R_Lefebvre on June 1, 2012 at 4:47pm

No, my point was that the bars should have been moving, and then you would see it's backwards.  You may have solved your problem, but I think there's something deeper going on here....

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