Search found 482 matches

by spacediver
19 Dec 2016, 11:32
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

lexlazootin wrote: It'll be sad to see you go :cry:
rest of the year is less than 2 weeks. He'll be back :)
by spacediver
13 Dec 2016, 23:49
Forum: General — Displays, Graphics & More
Topic: Advice please regarding eye-strain.
Replies: 10
Views: 2903

Re: Advice please regarding eye-strain.

one observation which seemingly contradicts these: in the dark, when you move a bright object together with a darker object, the darker object appears to lag behind. i noticed this for like a phone screen vs. the charger's plug does it seem as if the object lagging behind is doing so because its im...
by spacediver
10 Dec 2016, 10:53
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

very cool, probably the first time this info has been made public, or has even been measured.
by spacediver
05 Dec 2016, 16:03
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

flood wrote:when you add together distributions, the probabilty density function is a convolution, not summation
Ah, you're right. I was thinking of a mixture distribution, where each trial expresses only one of the underlying phenomena. In this case, however, each trial is the result of multiple phenomena.
by spacediver
04 Dec 2016, 23:05
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

Awesome stuff :) Looks like a mixed distribution (uniform + skewed normal). I'm assuming the uniform component is due to the USB polling (min: 0 us, max: 1000 us). Any guesses about what's responsible for the skewed normal? Also, do we know anything about the amount of time it takes for the digital ...
by spacediver
01 Dec 2016, 23:02
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

flood wrote: well those few us cancel out with the 2us above :P
god is on your side :)
by spacediver
01 Dec 2016, 21:52
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

measuring voltage requires analog-to-digital conversion and probably i'd need a faster chip to read an adc at >1MHz it's unnecessarily complicated for minimal improvement Fair enough :) At the very least, you could measure the average time it takes for diode to reach its threshold voltage, by looki...
by spacediver
01 Dec 2016, 21:45
Forum: General — Displays, Graphics & More
Topic: Advice please regarding eye-strain.
Replies: 10
Views: 2903

Re: Advice please regarding eye-strain.

On a tangential note, I took a look at the blur trail test on my CRT and when I focused on my stationary cursor in the middle of the screen I was able to notice that my eye's persistence is significantly higher at the center of my vision than at the edge. Basically, I saw vertical lines as the test...
by spacediver
01 Dec 2016, 12:20
Forum: Input Lag
Topic: flood's input lag measurements
Replies: 436
Views: 167005

Re: flood's input lag measurements

oh, i'm not choosing anything the atmega32u4 has a threshold voltage for its gpio pins. for instance if the voltage goes above 1.5V or so it's considered 1, if it goes below 1.4V or so it's considered 0. don't remember the exact numbers, but the datasheet has them And I assume that the percentage o...