well, I spent all morning trying to understand.
Here's my simulation, though, it's not video.
First of all, The simulatyion didn't have a pro mini. But it did have a micro. I connect to the Dpins as stated in the code.
The 555 timer is just to simulate the 1Hz (as in the flashing relay). That will not actually be there in the circuit design.
The middle tactile switch is bake. That works right. When I press the button, the left and right LED's sequence, overriding the turn signal flashing, then stay on steady. That is what I need done. Good!
However, when the simulation first starts, both left and right LED's sequence. Pressing the left and right tactile buttons do nothing. The lights should be off at start of simulation and then only turn on when a tactile button is pressed.
I am trying to figure it out, but just saw MC post, so thought I'd comment.
Also, I so far like the ease of use. It's easy to change the frequency. Just change the Int Delay = 333 to any number