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g400s sensor problem

post #1 of 15
Thread Starter 
I did a test with g400s - I drew two 100% parallel lines 26 cm from each other (12 inch long lines for more consistency) and did a 360 test with it. I use a an edge of a lego block to line it up on the lines for accurate results.

Moving horizontally with from left to right with a sensitivity that yields 26cm/360, I will of course, get that 26cm/360.

Tests were done with and without drivers. (Same results)

However, moving horizontally from right to left with that same sensitivity would not yield 26cm/360, but will be a little more than half a cm off. Maybe 25-25.5cm/360 from right to left.

Conclusion: g400s tracking left to right is different than right to left.

Does anyone know if the regular g400 does this?
Edited by Nilizum - 5/15/13 at 8:09am
post #2 of 15
It is a problem I have literally never heard of. The reason that your test is probably flawed is because you are using a lego block to make a scientific measurement. You are not likely to get the most accurate results with testing methods such as those.

Also, the sensor in the G400s is the same as the sensor in the G400. From my testing using actual software, both mice performed identically at their native steps. I can not think of any reason why a sensor would track better left to right than right to left. That is just a weird problem. Sensors don't function that way. Unless there is something wrong with your particular mouse. I guess that might be possible. But even then, I really doubt it.
post #3 of 15
I didn't notice that problem when I tried the G400s, however the mice feel very differently to me even in the same game with the same DPI (800). And for the record the MX518 v2 moved slower to the left than to the right.
post #4 of 15
I'll mess around with this later. Newer SROM could be bugged.
post #5 of 15
Thread Starter 
@Abacus

It's not a matter of which side tracks "better", but the inconsistency with the distances...

Also, I use the lego block as a straight edge, since i can stack multiple pieces to line then up on my lines. the right side of the g400s lines up with the lego block; plus the fact that a lego block is actually thick, allowing a better line up.

This issue being something you've 'never heard of' doesn't justify it (the test) being flawed... It's something I haven't heard of as well, and usually the inconsistencies with sensors not landing back on the line on a 360 test is due to acceleration, (but even then moving the mouse left and right should land on the lines atleast once or twice) however with the G400s I was able to reproduce this phenomenon consistently on every trial.

@illwill

My control variable (when comparing results from g400s) was actually the MX518 v1, and the results on that mouse yielded same left to right and right to left distances.
Edited by Nilizum - 5/15/13 at 8:05am
post #6 of 15
Thread Starter 
Update: Went to go to Fry's Electronics today to pick up a regular G400 to test. The regular G400 does NOT exhibit the behaviour that the G400s does. Oh, it's $20 bucks cheaper as well. thumb.gif
post #7 of 15
Hello!

First post! \o/

I Ordered a g400s and guess what? They sent me a G400. After finding your Thread i am kinda insecure about Returning it for the G400s.

Can anyone confirm this issue with the G400S ? could be just a problem with your specific model, but what if not?

Thanks anyway and sorry about any bad english.
post #8 of 15
Thread Starter 
Quote:
Originally Posted by F1nS View Post

Hello!

First post! \o/

I Ordered a g400s and guess what? They sent me a G400. After finding your Thread i am kinda insecure about Returning it for the G400s.

Can anyone confirm this issue with the G400S ? could be just a problem with your specific model, but what if not?

Thanks anyway and sorry about any bad english.

Skylit will do a test with his unit when he gets back.
post #9 of 15
G400 feels like such trash to the hand it makes me want to hurl it against the wall until its smashed to pieces. I HATE Logitech products. Such badly shaped mice.
Edited by Mancubus - 5/26/13 at 12:57pm
post #10 of 15
Quote:
Originally Posted by Nilizum View Post

Skylit will do a test with his unit when he gets back.

Oh that's very good news, thanks for the update!

maybe i'm staying with this G400, since from what i've read, there is not really much difference between the G400S, besides that Delta zero thing (which i think it 's just market to be honest) and the longevity of feets and clicks.
And since i've already opened it and now using it, i have to do some research law's wise about this situation. Cant use it for like a month and return after saying that its the wrong model. tongue.gif
I think its 1 week for return here.
Keeping my eyes here for any news between that time!
Quote:
Originally Posted by Mancubus View Post

G400 feels like such trash to the hand it makes me want to hurl it against the wall until its smashed to pieces. I HATE Logitech products. Such badly shaped mice.

Thats some rage! biggrin.gif

Wel,i i'm liking it right now. Very confortable; precision looking good! Coming from a CM spawn 61/102FW.
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