I am doing a little one off thingie using an UNO. I want to do certain things at certain times, and if I was doing this outside the Arduino world this is a piece of cake. Set up a time to tick off some time, fire interrupt, increment variable, if statement in MAIN to compare the count to a reference...MATCH do this blah blah blah.
But its my understanding that in the UNO the timers are allocated for other tasks and as such are not readily(easily) available. Am I correct? I understand that tampering with the timers can cause havoc in various libraries and background functions so I thought better to ask before jumping into the deep end of an empty pool.
I have elected to use some of the ready made libraries for the two parts I am using in this application. An OLED, and a D/A converter, as the end user is going to use the Arduino IDE for changes so I figured I would make it as easy for them as possible.
Looking at the Arduino Interrupts tutorials but those seem to be for I/O not internal, but I am searching.