PS1 Controller

Latency of an input from a PS1 Controller.

Measured by connecting it to the microcontroller in question, and then sending a signal to toggle the right trigger input, and timing how long it takes that signal to reach a target device over USB.

microcontroller	Sparkfun Pro Micro 5V	Sparkfun Pro Micro 3.3V	Arduino Uno
poll rate	1 ms	1 ms	1 ms
min	0.48 ms	0.66 ms	1.93 ms
max	2.13 ms	2.62 ms	3.07 ms
avg	1.14 ms	1.46 ms	2.43 ms
stddev	0.35 ms	0.39 ms	0.34 ms
%on time	94%	92%	86%
%1f skip	6%	8%	14%
%2f skip	0%	0%	0%
%3f skip	0%	0%	0%