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Best USB Ball Mouse (Yes, you read it right) - Page 4

post #31 of 81
Quote:
Originally Posted by vinzbe View Post

As far as m/s was concerned yes.
Again, "initially", as in 15 years ago - maybe. And even then I'd need source on that. But that would still only mean those optical systems were not technologically matured back then. There exist optical mice that track up to what, 6-8m/s nowadays? And 40+g accel? Do you think that is at all feasible with the ball mechanism? Hence: the optical tracking mechanism is objectively superior.
Quote:
Originally Posted by Melan View Post

So, here you go. This is a Microsoft Mouse Port Compatible Mouse 2.0A.
If you can be bothered, how about plotting for polling reports? Maybe flick the encoder wheel with your finger instead of swiping the mouse for that.
post #32 of 81
You guys are being ridiculous..

There's no way a ball mouse could maintain the same tracking given varied speeds. The rollers and thrust plates are all plastic.. The mechanical precision is simply not there, and for it TO BE THERE, you'd need highly precise machined roller mechanisms which would be exceptionally expensive. You'd also need the whole thing to be extremely rigid, so you'd have to machine the whole shell out of a unibody cast..
post #33 of 81
Yeah but it's fun
post #34 of 81
Quote:
Originally Posted by HAGGARD View Post

If you can be bothered, how about plotting for polling reports? Maybe flick the encoder wheel with your finger instead of swiping the mouse for that.

That's what I did.
Warning: Spoiler! (Click to show)

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post #35 of 81
Quote:
Originally Posted by Melan View Post

That's what I did.
Those 100Hz could just be the PS/2 cap. Mind "OCing" your PS/2 port to 200Hz sample rate?
post #36 of 81
Inb4 "but it's not polled"; technically PS/2 is interrupt based but the OS will sample the data from the PS/2 abstraction layer anyways. IIRC windows defaults to 175hz or something.
post #37 of 81
Quote:
Originally Posted by HAGGARD View Post

Again, "initially", as in 15 years ago - maybe. And even then I'd need source on that. But that would still only mean those optical systems were not technologically matured back then. There exist optical mice that track up to what, 6-8m/s nowadays? And 40+g accel? Do you think that is at all feasible with the ball mechanism? Hence: the optical tracking mechanism is objectively superior.
If you can be bothered, how about plotting for polling reports? Maybe flick the encoder wheel with your finger instead of swiping the mouse for that.
The optical encoders won't be a limiting factor, Given the speed of photodiodes I'm sure you could count pulses at a mhz or so if you really wanted to. So the limiting factor is the friction force between the ball and mousepad, which can be quite high depending on how much downward force the tensioner puts on the ball.
Quote:
Originally Posted by tp4tissue View Post

You guys are being ridiculous..

There's no way a ball mouse could maintain the same tracking given varied speeds. The rollers and thrust plates are all plastic.. The mechanical precision is simply not there, and for it TO BE THERE, you'd need highly precise machined roller mechanisms which would be exceptionally expensive. You'd also need the whole thing to be extremely rigid, so you'd have to machine the whole shell out of a unibody cast..

I take it you've never taken one of these mice apart. The only thing that needs precision machining is the mold for the encoder wheels, everything else is taken up by the tensioning spring.

The thing is optical encoders don't miss counts, and don't care how fast they're moving(as long as you're counting them fast enough). optical mouse sensors DO miss counts, and they have a much smaller range of accurate tracking speed(hard to do both slow and fast movements with an optical sensor). To make an optical mouse NOT miss counts you'd have to design the mousepad in conjunction with the sensor.
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post #38 of 81
suppose you want 800dpi and 4m/s tracking

the mcu would need to read the encoder 157.5*800*2=126000 times a second.

but anyway, moving parts are never good for durability
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kbp v80 matias quiet silverstone sx500-lg ncase m1 v3 logitech g100s with mcu replaced by teensy2.0 
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post #39 of 81
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post #40 of 81
Quote:
Originally Posted by qsxcv View Post

suppose you want 800dpi and 4m/s tracking

the mcu would need to read the encoder 157.5*800*2=126000 times a second.

but anyway, moving parts are never good for durability
Or count it in hardware.
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2x 1TB Spinpoint samsung dvd burner Samsung p2370 + Mitsubishi Diamond Pro 930SB WASD keyboards v1 semi custom w/ cherry browns 
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