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teensy mod and firmware for g100s - Page 10

post #91 of 95
Quote:
Originally Posted by qsxcv View Post

one Japanese guy did... i can't ever remember the website but he's responsible for this famous plot: http://i302.photobucket.com/albums/nn90/lewis6194/belsqdbh6ng4hh0nr.gif

the reason you don't see these fluctuations in the esreality data is because sujoy only took a few data points in the linear region (see images on pg4 of mousescore article).

a while ago i was thinking about rigging a cd player motor to do this but i got too busy with other stuff (which really means i'm just too lazy to spend the time on it).

That's not quite I was asking about though, I'm talking about acceleration-dependent variances, not speed-dependent variances.

I feel like it would be more feasible to have a form of human-powered flywheel setup; there are two ways we can do this I think:

First way: Maintain the wheel at a constant rate, vary the velocity by moving the mouse inward/outward. With a sufficiently large turntable we could even measure acceleration-dependent variances.

Second way: Spin the wheel gradually up to speed as the wheel spin is monitored. This is significantly easier to operate as we do not need to worry about maintaining a uniform rate, since the measurements will sweep through all the speed anyways and correspond to the correct datapoints.
post #92 of 95
Thread Starter 
given the framerate of the sensors and typical tracking velocities, typical accelerations experienced by sensors are extremely low.
in other words, at typical accelerations generated by human hands, the velocity barely changes from frame to frame. if you hit the mouse with a hammer, that's a different story tongue.gif

so because of this, there's should be no meaningful contribution from acceleration to the variance.
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post #93 of 95
Quote:
Originally Posted by qsxcv View Post

given the framerate of the sensors and typical tracking velocities, typical accelerations experienced by sensors are extremely low.
in other words, at typical accelerations generated by human hands, the velocity barely changes from frame to frame. if you hit the mouse with a hammer, that's a different story tongue.gif

so because of this, there's should be no meaningful contribution from acceleration to the variance.

Ahh I see. So that's how manufacturers obtained the numbers for "Max Acceleration" of their mice -- it corresponds directly to the framerate, instead of actually testing them.
post #94 of 95
Thread Starter 
well manufacturers just copy+paste pixart specs...

afaik that spec is always overly conservative, for instance, i can knock a g100s with another g100s and it will accelerate to ~1m/s in 1ms or less, so around 100g. way higher than the pixart spec of 20g.

anyway the i can move my hand on a mousepad is 15-20g (from trying to test the 3366's malfunction speed), so that spec is pretty much never relevant
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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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kbp v80 matias quiet silverstone sx500-lg ncase m1 v3 logitech g100s with mcu replaced by teensy2.0 
Mouse PadAudioAudio
allsop raindrop xl chord mojo hifiman re-600 
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Hard DriveCoolingOSMonitor
intel 330 180gb scythe kotetsu windows 8.1 pro sony cpd-g520 
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post #95 of 95
If this mod makes the g100s have 5ms faster button response than g303 does it mean that it has -0.6ms compared to the ikari? Which is even lower latency than the nmouse4k?
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