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Can this be modified to do two (different) button presses? I have a Chevy RKE fob which requires a quick press on the door lock button, then a 4 second long press on the start button. Could I use 2z and 2y1 for the second button, if so, how would I connect them to the pi zero? And how could I encode the second button press? Thanks for any help I can get on this, and for sharing this great project.