startmaskin for sailraces:
moving an extern startswitch starts the timer inside Ras Pi and simultaneously the start hooter (fife minutes before the race start)
after 60 seconds comes the next start signal (hooter), after the next 120 seconds comes the third signal and finaly after 60 sec. comes the main startsignal.
Startswitch starts the Ras Pi and first hooter signal - - 60 seconds next signal - - after 120 sec next signal and at least - - after 60 seconds the final start signal hooter!
Is there some kind human being, who can help me with this programming case? The hardware components and wiring, there is no problem at all!
I would become a very lucky human being!!!