Bluetooth (between Pi Picos)

Latency of bluetooth mode.

Measured by building a transmitter and receiver pair, toggling inputs on the transmitter, and timing how long it takes to receive that input over usb via the receiver.

controller	Direct	Wii Classic Controller	PS1 Controller	PS2 SG
firmware	new	new	new	new
microcontroller	Pi Pico	Pi Pico	Pi Pico	Pi Pico
communication	Bluetooth	Bluetooth	Bluetooth	Bluetooth
poll rate	1 ms	1 ms	1 ms	1 ms
min	3.53 ms	0.92 ms	3.96 ms	7.56 ms
max	12.42 ms	13.87 ms	16.95 ms	20.96 ms
avg	8.06 ms	8.84 ms	9.07 ms	14.11 ms
stddev	2.23 ms	2.24 ms	2.42 ms	2.78 ms
%on time	52%	47%	46%	16%
%1f skip	48%	53%	54%	82%
%2f skip	0%	0%	0%	2%
%3f skip	0%	0%	0%	0%

Note that in the below graph, you can click on legends to show and hide different controllers when comparing.