Comments on: Phone to Microcontroller interfacing with DTMF http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/ Microcontrollers Electronics Hobby Tue, 24 Jan 2012 09:58:33 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Proteek Basu http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-658 Proteek Basu Sun, 13 Jul 2008 14:52:02 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-658 Hi Mayank, This is a great project, can you publish the source code too. Regards, Proteek Hi Mayank,

This is a great project, can you publish the source code too.

Regards,

Proteek

]]> By: vijetha http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-657 vijetha Sat, 26 Apr 2008 07:32:01 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-657 hi ,mayank......it was a very nice design.....can you please me the code for this project...........also i wanted to know whether we can control any device with this......... hi ,mayank……it was a very nice design…..can you please me the code for this project………..also i wanted to know whether we can control any device with this………

]]> By: ElektronikaBa http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-656 ElektronikaBa Sun, 02 Mar 2008 21:54:58 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-656 Hi Amar, what you need is on my webpage. It is called Phone line controller. Hi Amar, what you need is on my webpage. It is called Phone line controller.

]]> By: Amar http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-655 Amar Mon, 21 Jan 2008 19:51:17 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-655 Hi, Can you suggest a way to interface a telephone line to microcontroller, tat detects the incoming calls. The voltage when ringing is 90 volts AC and in on hook state is -45 volts DC, how can i use this to connect a mc. Hi,

Can you suggest a way to interface a telephone line to microcontroller, tat detects the incoming calls.
The voltage when ringing is 90 volts AC and in on hook state is -45 volts DC,
how can i use this to connect a mc.

]]> By: dfowler http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-654 dfowler Wed, 16 Jan 2008 00:43:51 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-654 Shanhank, We dont sell parts here. You will have to hunt it down with DigiKey or another supplier. Shanhank,

We dont sell parts here. You will have to hunt it down with DigiKey or another supplier.

]]> By: shashank http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-653 shashank Tue, 15 Jan 2008 20:04:13 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-653 i want to purchase mt 8870.please reply soon with it's cost. i want to purchase mt 8870.please reply soon with it’s cost.

]]> By: dfowler http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-652 dfowler Thu, 10 Jan 2008 17:51:00 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-652 Alan, I will ask Mayank Magoo to give up the source code. If he does, I will update this article to include it. David Alan,

I will ask Mayank Magoo to give up the source code. If he does, I will update this article to include it.

David

]]> By: alan gehl http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-651 alan gehl Thu, 10 Jan 2008 12:13:53 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-651 HI, What a neat little design. I can use this to run our test equipment remotely. Sort of my way of going green. Any chance of you sending me the program for the ATMEGA-8? thanks, alan HI,

What a neat little design. I can use this to run our test equipment remotely. Sort of my way of going green. Any chance of you sending me the program for the ATMEGA-8?

thanks,
alan

]]> By: mure http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-650 mure Thu, 20 Dec 2007 15:26:20 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-650 Please give me a GOOD reason why you used ULN2003 transistor array!? Why didn't you connect 8870 to the microcontroller directly? You did that with STD pin! They both work on the same voltage... Hello TTL? Please give me a GOOD reason why you used ULN2003 transistor array!? Why didn’t you connect 8870 to the microcontroller directly? You did that with STD pin! They both work on the same voltage… Hello TTL?

]]> By: pK http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/comment-page-1/#comment-649 pK Tue, 02 Oct 2007 17:32:47 +0000 http://www.uchobby.com/index.php/2007/09/30/phone-to-microcontroller-interfacing-with-dtmf/#comment-649 Another excelent article and also very original for the DTMF decoding. Well done. Another excelent article and also very original for the DTMF decoding. Well done.

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