Hi guys, You helped me to solved some problems of the code but now I got stuck somewhere else! :stuck_out_tongue_closed_eyes: As you know I had decided to use our buddy, "Serial Monitor" to change the frequency of blinking. Here is the final code as follows. volatile boolean l; //unsigned int in…

The frequency slows down continously but takes time to spped up!

system April 8, 2013, 3:48pm 11

Henri, what board and IDE are you using ?

I use Arduino Due and IDE is 1.5.2.