Hi all, I'll suggest to use NE556 instead of NE555, bcus it contains 2 pieces NE555 so the amount of chips required is halved. I think so you need about 10 cubic foot to place your design (instead of about 18). Imre On Thu, 11 Jun 1998, Bill Cornutt wrote: > Is it too early to start thinking about a news group for > the '555 Project'? > > Bill C. bill@cornutt.com > > ---------- > > Please! keep me informed of al the steps in accomplishing this 'great wall' > > project! > > > > I would thank it you very much. > > > > Also, I promise spending long time studying your designs, especially > > trying to emulate EEPROM memory wit 555's. If you get the point of removing > > power and saving contents, for sure I will buy your design. > > > > Maybe you could come also with some simulation tools for your design (I > > suggest you using a PIC to emulate). I could help in writing the software > > Windows NT tools. > > > > Will your design be also programmed in circuit? Via a Serial, parallel > > port or maybe any special device? > > > > Thanks for the good time, > > > > Andres. > > -----Mensaje original----- > > De: N STEENKAMP [M.ING E&E] > > Para: PICLIST@MITVMA.MIT.EDU > > Fecha: miircoles 10 de junio de 1998 21:18 > > Asunto: Re: building a PIC emulator from 555s > > > > > > >Hi, > > > > > >> I would like any help I can get building a emulator for a PIC16C84. I > > >> can only use 555 timers. Once I understand 555s completely, I will have > > >> a base for building anything. > > > > > >This is a joke...right?? > > > >