G940 bugs sorted out???

[pupo162]

http://www.youtube.com/watch?v=AzYoi...&feature=feedu

here you go, this is the issue I have on my throttle. throw all the video i only move the thortles, look how all the other axis just dance around. there is even a bit where i only move 1 throtle and the other has a spike too.


cheers

[1.JaVA_Sharp]

the new firmware and driver update didn't work for you?

[Arrow]

[QUOTE=pupo162;220242

here you go, this is the issue I have on my throttle. throw all the video i only move the thortles, look how all the other axis just dance around. there is even a bit where i only move 1 throtle and the other has a spike too.


cheers[/QUOTE]

I just tested it, doesn't happen with my stick. I've heard that some units may have cables stuck in the throttle, so when you move it it creates the spikes.

[robtek]

As i have my 4th G940 now, i am shure thats the cable in the throttle unit!
As you might still have warranty -> get a new G940.
Apart from those Problems i love this stick, and the last one i've got even has a little stop in the middle of rudder and aileron trim.

[ACE-OF-ACES]

Originally Posted by Artist

Well, there two issues with the G940:

Issue 1 are the malcontacts in the throttle. Symptom: When you move the right(!) throttle, the axes R1 and R2 kind of jitter. Cause: The throttle movement stretches the cable inside and faulty signals a created in the lines of R1 and R2. Fix: Exchange the G940 repeatetly at Logitech, or fix it yourself as I did - thereby loosing all warranty).

Issue 2 is the so called Reversal Bug. It still exists on all axes (all 3 trims, rudder, throttle, R1, R2) except the stick x and y. You can live with that (I can't) or fix it creativly as he did - and me, too)

Bingo!

There is also a 'spike' in the rudders that may be related to or the same as the reversal bug.. Thanks for the link to the reversal bug fix.. Good ol Leo and his BU0836!

http://www.leobodnar.com/

I used his BU0836A (12bit) USB board at work to build a few force sticks (not force feedback but force sensing like the new Satic stick) that work great! Only problem is it will show up as a separate joystick.. but what with all the problems with the G940 that may be the only way to go.. Has to be the worst joystick I have ever bought.. I did do you issue 1 fix and it helped a lot but R1 and R2 still get a little noise when I move the throttle but nothing like it was at the start.. My fear is as time goes by it will get worse again.. If it does Ill most likely port it over to the BU0836A or trash the whole thing and make my own.. Long story short (too late) if your not savvy with regards to taking things apart and messing with wires and/or you don't have a lot of free time on your hands.. STAY AWAY FROM THE G940! It is the worst $300 I have ever spent on PC game hardware

[ACE-OF-ACES]

Originally Posted by 1.JaVA_Sharp

the new firmware and driver update didn't work for you?

Not one bit!

It was a joke IMHO in that the newest firmware focus was on the XY of the joystick itself.. Which I have yet to see anyone complane about.. the issue with the G940 from day one was the R1 and R2 noise and the reversal bug on all axis/sliders other than the XY of the main joystick.. And it took them months to come out with that.. So yes maybe some day the G940 will be fixxed.. but at the rate they are going it will be years before they even realise the real issue people are having with thie $300 joystick let alone come out with a firmware fix for it

[ACE-OF-ACES]

Originally Posted by Arrow

I just tested it, doesn't happen with my stick. I've heard that some units may have cables stuck in the throttle, so when you move it it creates the spikes.

Didn't happen.. or should I say I didn't notice it right away either.. But as so many noted at the Logitec forums as time goes by and as you use it more and more the symptom apears for all.. In that it takes some time for those so called stuck cables to come loose and wa-la you will get the noisy R1 and R2 and reversals.. Just give it time

[Artist]

Originally Posted by ACE-OF-ACES

In that it takes some time for those so called stuck cables to come loose and wa-la you will get the noisy R1 and R2 and reversals.. Just give it time

The Reversal Bug has IMHO nothing to do with the cable in the right throttle (trims, rudder have it, too). Rumors(!) have it, that the behaviour we know as Reversal Bug was implemented on purpose: Potientiometers wear out over time (1 million turns...) and being already used to this behaviour from the start, you wouldn't notice... That could be the reason they fixed it for stick x and y (Hall sensors!) but not for other axes. But as said: This is a rumour.

I am quite happy with having redirected throttle and rudder via a BU0836A (R1 and R2 to follow on my next day off, trims already external).

Artist

[mazex]

Originally Posted by pupo162

here you go, this is the issue I have on my throttle. throw all the video i only move the thortles, look how all the other axis just dance around. there is even a bit where i only move 1 throtle and the other has a spike too.


cheers

I had exactly this error on my G940, the right throttle messed up R1 and R2 (mine was bought 1.5 years ago on the release day so version 1.000 I guess?). Just today I got my substitution unit from Logitech support and it does not have the problem at all. Their support where awesome actually. As a compensation for my problems I got a rebate of 50% to buy whatever I wanted from their web shop. Really boring that I had got the G27 wheel for Christmas as the rebate would have been great there as it's rather pricey Instead I got myself a G510 to substitute my old G15 for half the price...

EDIT: After the fw 1.42 the joystick feels more precise, I have never noticed the reversal bug on my throttle or pedals that feel fine to me...

[ACE-OF-ACES]

Originally Posted by Artist

The Reversal Bug has IMHO nothing to do with the cable in the right throttle (trims, rudder have it, too). Rumors(!) have it, that the behaviour we know as Reversal Bug was implemented on purpose: Potientiometers wear out over time (1 million turns...) and being already used to this behaviour from the start, you wouldn't notice... That could be the reason they fixed it for stick x and y (Hall sensors!) but not for other axes. But as said: This is a rumour.

Agreed I don't think it is the cabling.. the cabling that was causing the R1 and R2 noise.. I am surprised to hear they used pots instead of encoders or hall sensors.. but that would explain why the BU0836 analog inputs worked with these sensors.. Leo does some filtering on the analog inputs so even if you had a 'spike' it would be filtered out.. Why Logi can't do the same in their firmware is beyond me in that it is 'standard' practice to do so with most analog inputs to A2Ds.. Not sure what or why they would impliment in firmware a reversal when using pots.. makes no since really.. Thus I would leave that in the rumor column.. More likly is it is a typical pot spike that spikes in voltage in a direction oposite of what your currently at and thus apears to be a reversal of sort

Originally Posted by Artist

I am quite happy with having redirected throttle and rudder via a BU0836A (R1 and R2 to follow on my next day off, trims already external).

Yeah you cant go wrong with Leo's stuff.. everyone uses his stuff.. Ill have to look but I seem to recal him having a board that would convert the hall sensor outputs to analog inputs on his board.. if so I would dump all the Logi electronics and go full Leo!