well
the problem is that if this problem was 10 years ago i wouldn't be bugging everyone here, and consult the books, the teachers and test it all in the electronics school...
But the world became telecom's for me and no more electronics, but since i have a problem and there is no clock that fit's for this task, i'll construct it!
I'll have a meeting in my school to use the lab and design the circuit, choose the parts, buy them, teste them and if ok i'll give feedback here!
Thanks to all!