i'm going to make a strobe light (like the ones used in disco) , but using an array of led, and have it controlled from arduino, so i ran in the following questions:
1) it's better to use a timer like LM555 or just power on/off trough arduino code ?
2) which kind of led would be the best ? an array of 20-30 "super bright led" , or just some "high power" (1W/Led) ?
I also need them to be switched on and off at relatively high frequency, and the should not burn after little use
3) To "drive" the led/led array, it's better to use a transistor, or not ?
thanks in advance to all who will help me