Hello, new to Arduino. I am working on a bike computer, I have the basics worked out on speed, time etc... I have a cycle counter for every time the wheel sensor is made. I want to record the time at lets say every 5 rotations, I believe is is not a problem with an SD card shield. What I want to do is compare an old ride to a new ride. I would like the cycle counter to pull data from the SD card and compare the old time vs the new time. eg start riding, after 5 wheel rotations look up time for the previous recorded 5th cycle of the wheel and compare. Then do this for 10,15,20 etc. Is this possible? and is there any example code for this?
Thanks for your help.