Guys and gals
I am working on a sketch that monitors a bunch of sensors.
One requirement is that on execution of an I/P, I need to run a timer for 5,10 or 15 mins., that doesn't affect the operation of the main loop, and generates an interrupt or sets a flag on completion.
Can this be done using the internal timer registers, or would I need to include a RTC?
TIA Fof