The manual and application notes are all downloadable from the parallax site at www.parallaxinc.com. Some very good information in them for hooking up to simple devices. Of course, they are Stamp related, but much of it still applies. I'm looking at the PDF of the manual now and it has a DTMF phone dialer circuit on page 361. The file name I have for the PDF file is stamp2_manual_v1_9.pdf - it is a few months old so there might be a new one. Dan -----Original Message----- From: Larry Woods To: PICLIST@MITVMA.MIT.EDU Date: Sunday, July 25, 1999 2:25 PM Subject: Re: Looking of simple PIC / dialer circuit >Don, > >Send me the file! Thanks. > >I think that you must have either 1) a StampII manual, or 2) a newer version >of the StampI manual. I bought my Stamps...and the development kit MANY >moons ago. My manual is 63 pages long(?) and a 1993 Copyright! Any help >would be MUCH appreciated. > >Larry Woods > >> -----Original Message----- >> From: pic microcontroller discussion list >> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Donald Riedinger >> Sent: Sunday, July 25, 1999 5:00 PM >> To: PICLIST@MITVMA.MIT.EDU >> Subject: Re: Looking of simple PIC / dialer circuit >> >> >> The Parallax Basic Stamp Manual (Parallaxinc.com) has a telephone line >> interface on page 361. DTMF.src was available on the Parallax bbs. I >> can email it to you. I believe there was also a DTMF "in" program. >> >> Simple? Of course if you don't mind taking up to 20 seconds to dial a >> number you could use pulse dialing. All you need is a relay driven by >> the PIC and a loop current resistor. If this isn't going to be FCC >> approved, you could maybe simplify the telephone line interface just so >> the PIC does something to the line that can be detected as data at the >> other end (PIC driven optocoupler and higher value resistor across >> line). >> >> Don >> >> Larry Woods wrote: >> > >> > I need to be able to dial a phone number, connect to a computer and dump >> > some data. >> > >> > Simple? If so, where do I find the software/hardware to do it? >> > >> > TIA, >> > >> > Larry Woods >>