Check out the Phonex chip, can't recall the name but it ought to do everything you are asking for. >From: Hari Seldon >Reply-To: pic microcontroller discussion list >To: PICLIST@MITVMA.MIT.EDU >Subject: [PIC:] Power line communication chip and PIC interface >Date: Wed, 31 Mar 2004 12:35:01 +0000 > >Hello, > >I'm looking for a way to send small packets of data >over in-premise power line. This is not broadband over >power line. I just need a way to control >relays/dimmers thoroughout various rooms in a premise >without needing to add separate data line in all >rooms. The kind of bandwidth I need is tiny. 9600 bits >per second should be more than sufficient and likely >more than I can generate. > >My first question is whether this is similar to X10 or >other existing products on the market? I looked at >some X10 devices but it looks as if the coupling >mechanism that they use is quite bulky. Is this belief >valid? If so, why are these devices so bulky? In my >mind, I was thinking that it might be that they need >coupling-transformers and step-downs to power their >logic devices. > >What I am thinking of building needs to be small and >elegant. I would very much like to make it such that >it can hide behind a switch's faceplate. I was hoping >that I could pick a PIC, use an IC based power >regulator to get a reasonable voltage, add a power >line communication IC (PLC chip). Is this viable? Has >anyone had any experience doing this? I'm very eager >to learn about your experiences with this. >Recommendations on what stuff to do, what stuff to >watch out for would be greatly appreciated. I'd also >be happy to get recommendations on what manufacturers >might be making relevant devices/tools for the above. > >Much thanks, >Hirose > >_________________________________________________________________ >Get rid of annoying pop-up ads with the new MSN Toolbar FREE! >http://toolbar.msn.com/go/onm00200414ave/direct/01/ > >-- >http://www.piclist.com hint: To leave the PICList >mailto:piclist-unsubscribe-request@mitvma.mit.edu _________________________________________________________________ Get rid of annoying pop-up ads with the new MSN Toolbar FREE! http://toolbar.msn.com/go/onm00200414ave/direct/01/ -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu