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HelicopterRadio - Futaba FASST › 12FG problem after upgrading to v3.0 firmware
04-06-2011 03:01 AM  6 years agoPost 1
BurningNitro

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Oregon

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I just flashed the firmware on my 12FG so it would work with my new cgy750. Afterwards I noticed in servo monitor that my rudder sits at +7% now. And, when I go left I get 100%, but when I go right I get 95%. I have spent hours checking all my trims, knobs, subtrims, atv's, mixes, ect. And, even when I change to any of the four models I have, it shows the same thing. It wasn't doing this before I installed the new 3.0 software. Am I missing something? Any ideas are greatly appreciated. It makes me wish I hadn't upgraded. What a headache!

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04-06-2011 03:36 AM  6 years agoPost 2
ESWLFSE

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Liberty Hill, TX

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Didn't notice this myself or ever read anything about it but I'm checking mine when I get home.

Could the trim not have been neutral when upgraded? Can you try the upgrade again?

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04-06-2011 03:53 AM  6 years agoPost 3
BurningNitro

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Oregon

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I thought that too. So, I upgraded again, and made sure none of the sticks were touched during the upgrade. I even deleted the downloaded file and redownloaded it. And, I still have uncentered rudder with uneven throws... If I log into my Vbar software on two of my other helis, regardless of the selected model, it shows the rudder being off now in the calibration menu on both helis.. They were perfect a few days ago. I know it happened during the upgrade. I was hoping it was an added feature that is throwing things off. Maybe some setting I'm not finding. But, as I keep going through things, it's starting to seem like the upgrade nuked the calibration on my transmitter.....?? Not very cool.

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04-06-2011 04:19 AM  6 years agoPost 4
glover1482

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Flying Field

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New model?

When you created a new model, did it also show rudder offset? If so, did it happen immediately; or following a particular parameter input?

Fly safe, Glover

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04-06-2011 04:34 AM  6 years agoPost 5
BurningNitro

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Oregon

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I did create a new model, and got the same result. And, if I reverse the channel I get -7%. Something definitely isn't right..

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04-06-2011 05:15 AM  6 years agoPost 6
BurningNitro

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Oregon

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I noticed it right after flashing the firmware, while programming the cgy750 on one of my helis.

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04-06-2011 05:30 AM  6 years agoPost 7
ESWLFSE

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Liberty Hill, TX

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Very strange, dying to find out what this is. Its giving me a headache and its not even my problem.

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04-06-2011 09:10 PM  6 years agoPost 8
Richard

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Scottish Borders,​U.K.

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My 12FGH has the same problem with Ver 3 firmware but I'm sure it was the same before the firmware upgrade?

Oh **** ! this is going to be expensive?

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04-11-2011 06:46 AM  6 years agoPost 9
baby_zyklon

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Singapore

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maybe the firmware upgrade has reset the stick calibration?

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04-13-2011 07:02 AM  6 years agoPost 10
nytflyer

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Temasek

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Oh. . . .Gotta check it. Maybe its juz with the 750. . .or other fbl units?

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04-14-2011 05:20 PM  6 years agoPost 11
babnika

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canada

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mine two mite have to recalibrate sticks read somewhere about doing this on helifreak got my cgy 750 will be getting my r6203sb tomorrow want to fly this weekend
ail+4(-96 +100)
ele good,
pit good,
rud-4 (-100 +99)
thr-7(-100+100)

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04-14-2011 05:46 PM  6 years agoPost 12
BurningNitro

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Oregon

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Well, I'm not suggesting that everyone else do what I did, but... I fixed it. I called Futaba and spoke to a guy that told me he couldn't help me and to write an email to Futaba support. I wrote an email, and almost two weeks later, still haven't heard back from them. I am extremely disappointed in the support Futaba has for their products. Basically they don't have any support.. Or at least that's the impression I'm getting. Anyhow.. So, after getting extremely frustrated with the situation, I decided to very carefully take my transmitter apart and look for an adjustment. After examining the inside, I noticed that each stick has two mechanical axis's on the back side. Each axis has a potentiometer mounted to read what your inputting in the mechanics. And, these potentiometers move around as you move the sticks. They are mounted on small little circuit boards that are held in place by one little screw. This part seemed a little cheesy to me, but I guess that is how Futaba decided to design it. So, I located the rudder pot attached to the little board, and loosened the screw holding it in place. I noticed you could move the board around a little bit. I moved it a touch, re tightened the screw and turned the transmitter on. When I went back to servo monitor, the +7 I had for neutral changed to -6... So, I went back and kept moving the board and re tightening the little screw until it read "0". At that point, when I went full left and right, I had 100% on both sides again!!! Sweet!!! Then I noticed my aileron was off a butt hair too, so I did the same thing to that pot. My transmitter now is completely calibrated. I'm still not sure why or how this happened. But, if your courageous enough, the technique I described will work... Good luck!

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04-14-2011 08:02 PM  6 years agoPost 13
Romak

rrApprentice

Scotland

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Well done Burning Nitro!

A couple of close up photos of the pots would be a help if possible.

Cheers

Rod
14sg....... ;-)

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04-15-2011 12:49 AM  6 years agoPost 14
noahb

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Carlasbad, NM

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Yep, posted this process well over a year ago. Futaba and hobby services will not fess up to this problem. You don't really need to loosen the screw. Just a little "bump" and you can get it set right. I then ad a small drop glue on the plastic mount where it goes across the board. This keeps it from moving in the future. Two years later and it is still spot on.

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04-15-2011 01:03 AM  6 years agoPost 15
skew

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KY

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And just think if Futaba would have added stick calibration to the 12fg update like the 8fg no one would be having this conversation.

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04-15-2011 01:18 AM  6 years agoPost 16
noahb

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Carlasbad, NM

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Very good point!

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04-15-2011 01:25 AM  6 years agoPost 17
ferincr

rrVeteran

sometimes in Costa​Rica sometimes in​the US

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Am I missing something here????
I created a new model and checked what you said and ooopss!!! the servo monitor is as what you describe but all the trims and subtrims are at 0.
Now, if you select servo test you have OFF, MOVING, or NEUTRAL. If you press on neutral it takes all the values to 0.
Isn't the important part that the trims and Sub trims are at 0 not the servo monitor??????
Am I misreading this post? I thought the servo monitor function has nothing to do with servo position in the model.

Intelligence chases me, but I'm a lot faster! Fernando

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04-15-2011 01:26 AM  6 years agoPost 18
AltecLansing

rrElite Veteran

North Carolina

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Can we see pics of this process?

Man, I miss the eighties.

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04-15-2011 01:42 AM  6 years agoPost 19
noahb

rrApprentice

Carlasbad, NM

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Here is a pic. The read box is where the pot sits on the board. Nevermind the other stuff in the pic (this is when I backlight my tx). Once you remove the back, you can see the 4 pots (two on each stick). If your center is off, then you will need to "nudge" these boards to one side or the other. It does not take much to obtain the correction.

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04-15-2011 01:48 AM  6 years agoPost 20
BurningNitro

rrNovice

Oregon

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Ferincr- My endpoints were 100 and my subtrim was 0, but servo monitor showed neutral being +7 and one side only going to 92 where the other side went to 100. The servo monitor should show 0 on rudder, elevator, and aileron when the sticks are untouched.. Unless the trim or subtrim is off for one reason or another. It should also show 100 both directions, unless endpoints are not at 100.. The transmitter had somehow gone out of calibration. All I did was recalibrate the pots using the screw that holds the pots in place. Weather this is right or not, it fixed my problem. I will post pics of exactly what I did when I get a chance...

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HelicopterRadio - Futaba FASST › 12FG problem after upgrading to v3.0 firmware
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