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post #411 of 1549
What I was talking about are the "cracks" that show all over your data, for example in your 800dpi1khz set (other than the first large bump!). I mean the spikes where the counts rise steeply to a high value and suddenly drop down entirely. This is what I found the most common behaviour of sensors when you push them too far (i.e. too fast). (I don't know if it is just the sensor outputting no information when it is being moved faster than it can register or if it is the MCU/firmware reporting no information because the sensor is only producing bull**** at high speeds.) In any case, I assume that these are the limitations of the sensor itself or something related to it.
Let's have a closer look... in your case this indeed seems to happen at 128 counts for 800dpi1khz and at 1000 counts for 800dpi125hz. In both cases and for 800cpi(!), this is equivalent to ~4m/s which is very fast and more than you'd ever need. Since it is the same physical speed, we have another hint that the maximum detectable speed for the sensor is met. That's alright since any sensor will have it's limits and if it's at 4m/s we can be very happy with it.
However, sadly there are cases where additional and unnecessary(!) limitations are introduced somewhere on the way between the mouse sensor and the USB port of your computer. This is for example the case with OS MLT 04 based mice and the Abyssus 3G where the USB data path is limited to 8bit (max 128 counts). So since the maximum counts per sample are fixed, more counts can only be transmitted if more samples are transmitted, i.e. the polling rate is risen for example from 125Hz to 500Hz. Instead of 128x125=16000 counts (~1m/s @400cpi) you'd get 64000 counts (~4m/s @400cpi) per second.
In your case it is not the speed varying with polling rate but the maximum counts per sample. That's why I think the 4m/s limitation is not caused by this particular type of limitation.

Now, about the plots from your post... First, are they all taken at 800cpi??
There is indeed one of those "plateaus" at the beginning of your 800dpi1khz set. Don't know why it once just clips and otherwise breaks down entirely...
The 500Hz bump looks like the first one in the 400dpi500hz set. So 145 counts @500Hz are met. That's about 4.6m/s but obviously only at 400cpi. 145 counts @500Hz and 800cpi result in only 2.3m/s. So I don't know if the sensor always outputs 800cpi and the MCU/firmware just down-interpolates or if there are really two hardware sensor resolutions. In the latter case, it could indeed be that the sensor (or the MCU/firmware) has different malfunction speeds depending on the resolution.
But it all doesn't matter since you won't be able to reach those speeds realistically imo.
post #412 of 1549
Quote:
Originally Posted by Kragarmendes View Post
Now, about the plots from your post... First, are they all taken at 800cpi??
There is indeed one of those "plateaus" at the beginning of your 800dpi1khz set. Don't know why it once just clips and otherwise breaks down entirely...
First is 800cpi1khz+zoom and the other is 400cpi500hz. It breaks down entirely because of the way I do those tests, I simply sometimes run out of my pad and desk. It is my fault not sensor.
Quote:
Originally Posted by AquaSurfer View Post
Clipping is easier to achieve on 800cpi because it is easier to reach those values:
Quote:
Originally Posted by AquaSurfer View Post
It seems that there are limits 1024 for 125hz, 256 for 500hz and 128 for 1000hz, is it normal?
Samples in one count that is. Above which there is neg. accel.
Quote:
Originally Posted by Kragarmendes View Post
But it all doesn't matter since you won't be able to reach those speeds realistically imo.
True.
And thanks for your valuable input.
post #413 of 1549
tried logi g400? same as mx518 comparing tracking? who can tell
    
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post #414 of 1549
Quote:
Originally Posted by Ufasas View Post
tried logi g400? same as mx518 comparing tracking? who can tell
Uses the same sensor as the MX518 & G5 v2; it shouldn't be much different. The internals may be slightly tweaked and drivers slightly more optimized.
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post #415 of 1549
Quote:
Originally Posted by Tator Tot View Post
Uses the same sensor as the MX518 & G5 v2; it shouldn't be much different. The internals may be slightly tweaked and drivers slightly more optimized.
G5v2 used the same ADNS-6010 laser sensor as the G5v1.

I believe the G400 uses the same 3080 as the 518 has, but It's still unconfirmed until someone opens one up
post #416 of 1549
Quote:
Originally Posted by Skylit View Post
G5v2 used the same ADNS-6010 laser sensor as the G5v1.

I believe the G400 uses the same 3080 as the 518 has, but It's still unconfirmed until someone opens one up
I thought the G5 v2 used the same sensor as the MX518; that's what I was told (and read) numerous times.

If I'm wrong then I am, as I only have the V1 (and still love that guy.)
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post #417 of 1549
Quote:
Originally Posted by Tator Tot View Post
I thought the G5 v2 used the same sensor as the MX518; that's what I was told (and read) numerous times.

If I'm wrong then I am, as I only have the V1 (and still love that guy.)
Both versions of the G5 are laser, while the MX518 is optical. They absolutely have different sensors.
Meh
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Meh
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post #418 of 1549
Well as I said, I was just going off what I heard.

Still though, MX518 & G5 (in terms of sensor and feel) are some of the nicest mice I've ever owned. The G500 is my current favorite; though it could be a bit heavier and more bulky in my opinion.
Only because I have such large hands.
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post #419 of 1549
ok read about g400, is a bit lighter than mx518, wheel feels strange, makes noise, haha, so sombody offered to put mx518 wheel instead of g400 with guide of photos, despite that, other things are as in mx518, drivers tweaked etc, but didnt read about tracking yet, i guess same
    
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post #420 of 1549
Wow I cant belive A4 tech have so many interpolated dpi mice
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