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Dear all,
i want to sending dtmf signal to telephon line to access auto dialing, so can i use pic 16f84 then program using dtmf code (DTMFOUT PORTB.1,[10,0,5,8]), or need using pic 16f887. so how about circuit from pic to telephone line....need to add some component such transformer.
please help me.........urgent...
Sounds like a school project...Quote:
Originally Posted by din_kt
Google it! There's load of projects out there for connecting into a telephone circuit...and a LOT of warnings about doing so...
16F84/16F877? How about the 'A models of each of those? How many other PIC projects have you done so far?
PIC 16f84A and 16f887A......i'm only familiar with this pic.
Ok...Refer to Post #2...Quote:
Originally Posted by din_kt
What did a Google search turn up?
What other things have you built with PICs so far using PicBasicPro?
Here's a full schematic for a telephone interface complete with example code.
http://www.microengineeringlabs.com/doclist.htm#XT