I need to create a simply program to display the output from my arduino( like "RPM: number", number is updated every arduino output ) , and a button that create and start (or stop) to record data on a file. But I do not know where to start, i don't really need to study processing, I need it just for this occasion. Can you recommend a code that is right for me to change?

Ty for any help!

Hi all, i've programmed a rpm with arduino, how i can use the output that i have to create a realtime updated cartesian graph time/rpm.

Something like that:


Ty,
Yaro.