Hi guys and gals
I've a really simple problem that I just cannot seem to get my head around !
I'm looking for a sketch that :
On startup gives a PWM output of 50
On the push of a button (rising edge) the PWM output rises at a definable rate to 255
Then after a set time or the button is released the PWM value drops at the same rate as before down to 50
That's literally it and I just can't work it out ! - major mind block happening right now !
Any help would be greatly appreciated 
Sam