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| Electronic Projects Design/Ideas/Reviews Are you building an electronic project or want to? Maybe you need some assistance? Come and submit your electronic questions here and let our experienced members find a solution. |
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Thread Tools | Display Modes |
17th January 2008, 03:32 PM
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DTMF Dowbt...
Is there any IC which has FM transmitter inbuild on the same IC itself?..
Thanks.. |
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17th January 2008, 03:57 PM
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Try looking at the keeloq system from Microchip. Have you used a microcontroller before?
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17th January 2008, 04:03 PM
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Thanks for reply, And Not yet using pic, if possible i vl do...
Is there any market IC has that function?.. |
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17th January 2008, 04:06 PM
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DTMF is 1970's (or earlier?) technology, it hasn't been used for years now in anything new - no one is going to make an IC that's long obselete and no one wants.
Remote controls have been digital for decades. |
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17th January 2008, 04:10 PM
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A PIC is a market IC.
Any microcontrollerless wireless security system would be fairly easy to crack. |
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17th January 2008, 04:12 PM
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Thanks really nice link, but the problem is.. i hav very short time to finish my proj. thats why...
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17th January 2008, 04:13 PM
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Well good luck, perhaps you should have chosen a project you understand.
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17th January 2008, 04:16 PM
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Oh really, wat r the ways to crack?...
So that i can built the circuit stronger.. |
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17th January 2008, 04:38 PM
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A microcontroller, a Keeloq one would be a good bet. It's what they use in the automotive industry, my car has a Keeloq PIC in the key.
Like I said, if its for your final University project then pick a subject you know if you want any chance of finishing it on time. DTMF is for telephones and 1970 security systems. |
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17th January 2008, 05:00 PM
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Actually not for telephone dialing.. say
To control 10 doors using 4 digit passwords(wireless) i decided via dtmf to open and close... if you hav any other idea let me know.. |
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17th January 2008, 05:18 PM
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Quote:
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17th January 2008, 05:44 PM
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Oh thanks.. but where can i find some sample circuits...
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17th January 2008, 07:17 PM
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[To control 10 doors using 4 digit passwords(wireless) i decided via dtmf to open and close...]
Any sample circuits... |
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17th January 2008, 07:40 PM
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When's it due?
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18th January 2008, 05:24 AM
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Before feb. end...
Also i'm new to pic.. |
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