Sequence learning

Projects General Guidance
1

Hi:

I want to implement some sequence learning on Arduino Uno. For example I have oneLED and one pushbutton and the following secuence is performed several times:

pushbutton is held LED goes on
3 seconds
pushbutton is released and LED goes off
3 seconds

Since this secuence is done by hand the times are not exact I want to get an average of the times so the expected value will be 3 seconds, but how can the actions (LED on and off) be remembered (registered).

Also if after the average is calculated (e.g.: 3.02 sec) and the LED goes on for let's say 5sec. and alert is sent.

Any ideas are welcomed.

2

Record the millis() function at beginning and end of each part and subtract to find elapsed time. Store this in an array and then export it using the serial command?