Hello,
I´m thai boxing trainer and I want to put a warning siren on the room of the gym where I give my classes. I´ve been looking electronic kits for timers but no one is giving me the options I want to have.
I would like to have a circuit, if possible working in AC, if not, that´s not so big problem, that when I trigger it then starts the siren for 3 seconds, then an adjustable time between 1 and 5 minutes without siren sound, when this time finishes again the siren starts for 3 seconds, then an adjustable time between 30 and 90 seconds, and then again the sequence.
I need this because I want a warning sound for the start and the end of the rounds, in theory it would be " 3 seconds `RING´ (Start)", "2 minutes round (without any sound of the siren to fight)", "3 seconds `RING´ (End)", "1 minute (without any sound of the siren to rest)", "3 seconds `RING´ (Start again), and then the same sequence again and again...
If you can give me some scheme or ideas about the design of the circuit or some IC to do that I would be appreciated.
Thanks.