I am working on a project where, I believe, I need to write functions using millis(), and write my sketch to an attiny using arduinoISP. In a nutshell, the project will blink a number of LEDs at different intervals.
I read an article about using functions with millis(), and much of the discussion was related to the 16mhz crystal oscillator used on the arduino. I understand that the crystal will determine how "time" is handled in milliseconds, does this mean that I will have to add a crystal to the final project with the attiny?
My goal is to use a lower pin count attiny, but still keep the ability to run sketches developed on a retail arduino.
Sorry if this is a ridiculous question, and I find "RTFM" to be an acceptable answer, if one would be so kind as to point me to the correct FM.