How does surface calibration work? - Overclock.net - An Overclocking Community

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How does surface calibration work?

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post #1 of 21 (permalink) Old 03-11-2016, 10:00 AM - Thread Starter
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Talking about IR sensors, don't care about laser.

Is it something to do with LED intensity? I'm fascinated by it. I had a really rough cloth pad which had a LOD of about 4-5 CDs with the Torq X5 on default. After surface tuning, it came down to Zowie levels. Incredible.
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post #2 of 21 (permalink) Old 03-11-2016, 11:34 AM
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no it just adjusts sensor parameters which determine the lift-off detection threshold. basically things like how much contrast there must be in the image it sees in order to consider tracking

btw for the case of 3366, i was wrong; the surface calibration affects tracking directly, not just the lift-off.

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post #3 of 21 (permalink) Old 03-11-2016, 11:45 AM
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Quote:
Originally Posted by m0uz View Post

Talking about IR sensors, don't care about laser.

Is it something to do with LED intensity? I'm fascinated by it. I had a really rough cloth pad which had a LOD of about 4-5 CDs with the Torq X5 on default. After surface tuning, it came down to Zowie levels. Incredible.

Decreasing led intensity is a ghetto solution supposedly used on some older A3090 mice. But I'm not sure which. As qsxcv said it's not used for new sensors.
Quote:
Originally Posted by qsxcv View Post

btw for the case of 3366, i was wrong; the surface calibration affects tracking directly, not just the lift-off.

Please elaborate, I wasn't around for a while. What else does it do?
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post #4 of 21 (permalink) Old 03-11-2016, 11:50 AM
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according to the datasheet
one register adjusts the lift-off threshold, the other adjusts the threshold for determining what counts as a feature or not

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post #5 of 21 (permalink) Old 03-11-2016, 11:54 AM
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I'm not sure if having less "features" of a surface recognized is really a good thing.

"To give the gamer more control and command over so much power there is some sort of a smoothing agent incorporated on the mouse chip that gives that different feel, that edge, that authority over your shots."
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post #6 of 21 (permalink) Old 03-11-2016, 11:56 AM
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likewise being too eager to consider something a feature isn't good either.

so that's how surface calibration could potentially improve the tracking,

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post #7 of 21 (permalink) Old 03-12-2016, 01:09 AM
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Should the g303 used with drivers then? I realised that it doesn't have a function to adjust LOD
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post #8 of 21 (permalink) Old 03-12-2016, 07:10 AM
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In theory you can add a calibration and tweak the settings yourself in

"AppData\Local\Logitech\Logitech Gaming Software\settings.json"

Code:
"surfaceTuning" : 
  {
    "Logitech.Gaming.Mouse.G303.Daedalus.Apex" : 
    {
      "{8d56eb33-30d4-421b-8058-17ca8f582f31}" : 
      {
        "ledDrive" : 0,
        "minSqual" : 255,
        "name" : "Puretrak",
        "pixelThreshold" : 5,
        "time" : 1456507907
      }
    }
  },

I've tested pixelThreshold and minSqual. Only pixelThreshold made a difference tho.

Everything past 15 made my mouse not move at all.

Just close the Logitech Software, Edit and Save the file and restart the Software and apply the calibration (switch to the default one first).

Havn't tested changes with the moustester plots tho. So if anybody wants to, maybe you can find something out.
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post #9 of 21 (permalink) Old 03-12-2016, 09:28 AM
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yup pixelthreshold is the register that could affect tracking
Quote:
Originally Posted by pixie99 View Post

Should the g303 used with drivers then? I realised that it doesn't have a function to adjust LOD
you can uninstall the software after the calibration if you like

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post #10 of 21 (permalink) Old 03-12-2016, 10:30 AM
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Quote:
Originally Posted by qsxcv View Post

likewise being too eager to consider something a feature isn't good either.



so that's how surface calibration could potentially improve the tracking,

Since I can only manually configure the 3366, would someone with a G502 or 303 be able to post the the Surface Analysis for the Zowie G-TF Speed?
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