well let me try to take a wak at this. So on the 555 timer:
Ground goes to pin 1 and the 5V goes to pin 8. Then you have a emp switch followed by a 200,000 ohm resister connected to the +5V then connected to a 1 uF capasitor. the capasitor negitive term is connected to the ground and then the possative goes to the trigger (pin 2). Im not sure what to put for the reset. but then the output (pin 3) goes to (im guessing here i can not find much info) pin 13 on the 74HC. ground to pin 7 and +5V on pin 14. Then pin 1 and 2 are the switch on the controler.
now back to the capasiter and resister, i looked on a site and i think that combo should equate to a .2 sec fire rate. is this correct?
i hope i got it all right. like i said i think i need something on the reset but i dont know what it would be.