How to read number in data file and do calculation?

[zhengtzer]

Hi all ft member,


1. I am studying ft lesson plan on PID controller for line follower robot

lesson_plan.png (238.76 KiB) 4655 mal betrachtet

2. i would like to try getting the last 3 position number, average it and feed it back into loop to tune robot

calculate_average.png (87.6 KiB) 4655 mal betrachtet

My questions:
how to achieve getting last 3 number and average it out?


thanks
Jonathan