I’ve been using the blink without delay for all my other flashing patterns, but I cannot seem to work out how I would make it work so it starts at a blink interval of every 100ms then at each button press the blink increases by another 100 until it reaches a maximum of 2000.
Then the down button does the opposite.
I'm no professional at this and never will be as my profession is architectural design not programming, I’m only doing this as a personal interest/challenge so I openly admit that I’m an extreme novice that needs a helping hand!
So everyone’s help is much appreciated.