My brother is pretty advanced in Electronics here I'll have him help you.
Well he says that there is not enough information here from what you've drawn here. and looking at it doesn't make sense to me either And what I know about electronics is very basic.
From what I see you have one wire hooked up to a keypad how the hell is that supposed to control a timer/code input screen? whats the wire hooked up to on the keypad? What, where, and how is that hooked up to the timer? honestly you might be better off with a fixed time and a switch to turn it on and off, That would be alot simpler for a beginning electronics student.
Also whether it's legitimately a hypothetical bomb timer or not, talking about making bombs at all, whether it's just a timer or the real thing, online is just generally inappropriate for almost everywhere. I hope you understand what im trying to say here....
Last edited by floop78; Nov 17, 2011 at 02:32 AM.