1000 Threads found on edaboard.com: Dtmf From Mobile
dtmf is like a voice. If you do not use a mic to detect this sounds you do not need a dtmf receiver , if you want to communicate with cell phone by data cable or IRDA , it is just a digital communication. dtmf has nothnig to do with it.
Microcontrollers :: 09-17-2004 10:34 :: Free_Will :: Replies: 11 :: Views: 8127
how we can reduce the heat compensation from mobile telephone anntenas in order to let the battry work for longer time????
Electronic Elementary Questions :: 10-30-2005 12:19 :: rami.masadeh :: Replies: 0 :: Views: 569
I am using VB to receive sms from mobile. This is the code.i have tested the At commands given under on hyperterminal and i can receive the sms in it.
+CPMS: 2, 60, 2, 60, 2, 60
I get the correct response using the first two at commands as shown above but when i send the third comma
PC Programming and Interfacing :: 11-18-2007 06:59 :: fadigigs :: Replies: 1 :: Views: 1205
i went to ask how i can send data from mobile to pc over gprs using the ip address of the pc
and how to send data from pc to mobile? is there such ip address for the mobile??!!!
is it necessary to send the data in xml file??
Thanks a lot!!!
Digital communication :: 12-10-2008 10:10 :: rainwhisper :: Replies: 0 :: Views: 552
Anyone have gotten idea to improve radiation immunity from mobile phone for LDO? In my LDO design, EMI is poor. When a dailing mobile is close to LDO, LDO's output voltage drop to 0v at 217Hz that is mobile's frequency.
Analog IC Design and Layout :: 12-16-2010 07:33 :: leo_o2 :: Replies: 14 :: Views: 958
My project is:
1. A motor is interfaced to a pic 18F.
2. The user must be able to send an sms in order to on/off the motor.
How can I do this? I am just starting in this area. And I would appreciate your valuable suggestions and resources. :smile:
Microcontrollers :: 03-02-2011 00:09 :: areeckal :: Replies: 8 :: Views: 667
how can i send data like simple characters from my mobile to microcontroller through bluetooth ?
Is there any application for mobile to send the characters to the microcontroller ?
can u tell the interfacing between the mobile bluetooth and bluetooth module in microcontroller kit.
Electronic Elementary Questions :: 08-08-2012 00:58 :: dinesh401 :: Replies: 3 :: Views: 1083
what is your question?
you need multiple interfaces, including the dtmf detector is drived from speaker output your mobile phone
Microcontrollers :: 02-13-2012 06:10 :: Li_ereunpisan :: Replies: 1 :: Views: 463
dtmf can be detected if the call is from a telophone by sim900, but how can i detect dtmf from a gsm , or in othor words how can i send dtmf tone from my mobile...
i am confused as when i call a callcenter they automaticaly detect dtmf tone if i send it (...)
Microcontrollers :: 10-18-2011 06:45 :: sherazi :: Replies: 0 :: Views: 801
Microcontrollers :: 08-27-2003 20:51 :: elektrom :: Replies: 4 :: Views: 3327
You can use IC CMX866 from CML Microcircuits.
It has inbuilt dtmf generator & a RS232 interfacing facility.
It also has inbuilt AT command interpreter with which you can dial/answer from PC.
I am also attaching PDF for CMX866
I hope this will help.
Professional Hardware and Electronics Design :: 10-16-2006 06:55 :: cybersan2002 :: Replies: 8 :: Views: 3062
I started downloading a 250MB file through my mobile phone. But due to connection loss the download stopped at 235MB. Now when i start downloading, it starts from beginning. So i copied the 235MB to computer and finding a way to continue the download.
Is there any way by which i can resume it. Because my net connection is too slow i don't want to
Miscellaneous Engineering :: 12-31-2007 01:16 :: my_books :: Replies: 2 :: Views: 738
hello every one
i make circuit with mt8870 and wnat to coonect with micromaxq3 mobile it has usb 5 pin socket and 4 wires red ,green and two copper color wires means total 4 wire and no one is common.then it is getting very hard ,how to connect with dtmf input line and with ground line.
in 4 wires which wires i shud connect with i/p line and grou
Microcontrollers :: 05-07-2011 12:22 :: deepakgupta.rf :: Replies: 0 :: Views: 832
I have a website running in windows server and can Access from internet through " domain name . Now I want to know, Is it can access from my mobile phone with same domain name ? Or anything extra need for it ? Please help me .
Network :: 07-10-2011 01:50 :: aneesholv :: Replies: 3 :: Views: 416
I want to decode the dtmf tones sent from mobile's microphone but i have stuck in this. I am not getting output. I think there may be some problem in earphones' output .. Tell me how to connect earphone to dtmf decoder's IC. I am using MT8870.
Hobby Circuits and Small Projects Problems :: 08-30-2011 08:40 :: Pulkit Varshney :: Replies: 6 :: Views: 2210
i use sim900 and firmware
i also use mic for ivrs
when there is no voice transfer form modem to mobile.....dtmf are working
but when there is a voice transfer from modem to mobile.....dtmf are not working properly ,some time randomly (...)
Digital communication :: 10-22-2012 09:38 :: nngohel :: Replies: 4 :: Views: 3234
I'm designing a mobile phone detector. My approach is to work with the GSM uplink frequency range. For this purpose, my questions are:
1- When a mobile phone is not in communication (call or SMS), what are the signals that it sends to the tower?
2- The most important for me, what is the period between these signals?
RF, Microwave, Antennas and Optics :: 08-20-2014 09:13 :: electro_fran :: Replies: 2 :: Views: 181
Wavecom WMOi3 User's Guide
Service Manuals, Requests, Repair Tips :: 07-09-2004 14:34 :: eeklac :: Replies: 8 :: Views: 4369
how can i give input to a DC motor through sms from mobile phone? kindly give me the circuitry of the sms reciever and required softwares to give the input of sms to the reciever
Hobby Circuits and Small Projects Problems :: 02-23-2005 04:49 :: mashhud zafar :: Replies: 2 :: Views: 920
what is the side effect for mobile radiation on the human body????
RF, Microwave, Antennas and Optics :: 10-30-2005 12:21 :: rami.masadeh :: Replies: 4 :: Views: 1988
I would like to know the main cause of TDD noise in mobile phone, can anyone explain to me? Why shunt capacitor on the trace can reduce this noise? And is it related to ratiatied intererence e.g. Signal from mobile's antenna?
RF, Microwave, Antennas and Optics :: 01-08-2006 21:56 :: Mac7978 :: Replies: 0 :: Views: 1491
is there any software to upload and download java games to/from mobile
i want it for samsung c-100 bcz it cant upload game
also for k700 as i cant save its games in mypc
Software Requests :: 06-08-2006 11:49 :: ehsanelahimirza :: Replies: 1 :: Views: 153
Please download this file
Digital Signal Processing :: 04-08-2007 23:23 :: budhy :: Replies: 4 :: Views: 3967
Question : is it possible to localize a simple mobile phone wih internet by GPS :?:
adding of course an electronic card :!::!:
RF, Microwave, Antennas and Optics :: 06-04-2007 14:16 :: elkimhoc :: Replies: 2 :: Views: 2510
We want to send SMS to a recipient. We am using sonyericsson k750i mobile phone. We are using AT commands but we are getting an error using these commands.
when we use this command we we get error. Help us if some one has a solution.Thankyou.
PC Programming and Interfacing :: 10-28-2007 09:05 :: fadigigs :: Replies: 2 :: Views: 1698
I want to use a mobile phone to take pictures and send out via MMS automatically when an SMS is received. I want to use a microcontroller connected on the serial port of the mobile phone which controls the phone over AT commands.
Microcontrollers :: 06-18-2008 13:02 :: techie :: Replies: 1 :: Views: 2102
i finally overcome connecting my t29s mobile to pc, it was perfect
I successfully get the message from mobile through HyperTerminal.
How should I connect t29 to MCU??????
i connected tx & Rx & Gnd of mobile to Rx & Tx & Gnd of my MCU(atmega16) and i wrote this program :
unsigned char send_data = (...)
PC Programming and Interfacing :: 07-20-2008 01:47 :: h.v :: Replies: 0 :: Views: 548
:-Di want to display the sms when i received from mobile that connect with pic 16f877a but when i run the simulater proteus the program don't work i don't know the error
PC Programming and Interfacing :: 12-08-2010 16:27 :: layth amleh :: Replies: 3 :: Views: 1441
How one can transform body coordinate (Roll Pitch Yaw) system to ENU (east North UP) coordinate system.
I am using HTC mobile sensor accelerometre and orientation sensors.
I want to transform Acceleration values from mobile Coordinate system to ENU system, and also after transformation how should i verify it whether the transformation is (...)
Professional Hardware and Electronics Design :: 12-21-2010 10:30 :: saravians :: Replies: 0 :: Views: 1038
Required for a not for profit social enterprise a system-integrated micro controller and user interface that
regulates the function of a Hawkers's Solar Lantern based on proof of payments. It should be possible to switch on/off
the solar lantern through a SMS sent through mobile phone.
Also need to develop a Revenue Manag
Microcontrollers :: 01-24-2012 07:48 :: arunjain57 :: Replies: 1 :: Views: 707
hello experts .,
I want to make project that send an sms from a nokia mobile using 8051 (when certain condition comes in controller attached sensor )
i have googled a lot
but am confused where i start .
i have no experiences regarding hyper terminal
please help me where i will start
any sample c code for that
Microcontrollers :: 02-03-2012 21:57 :: thannara123 :: Replies: 5 :: Views: 735
please are you help me how to connected the pic with mobile
explain (send the sms from mobile to other mobile then operate the load such as lamp)
please give me the image and block diagram and code at micro c
Digital communication :: 05-15-2012 19:22 :: youwakeem :: Replies: 4 :: Views: 384
i am using aubtm 20 with my computer connected with rs232,i want to know that can i send data or any word from mobile to computer terminal or computer to mobile .
Microcontrollers :: 06-10-2012 03:26 :: surjeetkmr5 :: Replies: 1 :: Views: 475
I wanted to transfer the messages that my mobile receives to a word or text file in my PC. Is it possible to do it serially through COM port ??
I also tried sending a message to USB Modem (micromax modem with a docomo SIM). I used the following python code.
ser = serial.Serial('COM4', 9600)
PC Programming and Interfacing :: 03-05-2013 10:11 :: bobdxcool :: Replies: 4 :: Views: 338
Hello every one,
Is there any way to update the sim900 RTC time from mobile network? I am not able to find commands. There are commands to write and read in to the RTC register but I want to update time when the device powers up and I do not need to configure time again and again.
Microcontrollers :: 10-02-2013 07:46 :: babar_ali :: Replies: 2 :: Views: 645
I need to make a mobile App controlled Gate Automation. For that I am planning to Use mobile Wifi to send commands. I am planning to Interface some wifi module with the PIC micro controller. I am new to Wifi interfacing. Anyone please help me in this.
Thanks in advance.
Microcontrollers :: 11-22-2013 05:23 :: Thomas Sabu Ichippillil :: Replies: 0 :: Views: 300
u could try
Electronic Elementary Questions :: 01-01-2014 03:56 :: phobos1 :: Replies: 5 :: Views: 354
Isn't it nice :lol:
Software Links :: 01-02-2003 20:46 :: eirp :: Replies: 2 :: Views: 1333
many e-shops are selling Graphical LCD displays with integrated controller but it seems to me that they are still too much expensive (30-40$ for a simple 128x64). I'm looking for low cost LCD with integrated controller (with basic commands) starting from 128x64 pixels and backlight.
Do you know a good LCD brand and a place wher
Professional Hardware and Electronics Design :: 02-16-2003 16:58 :: orione :: Replies: 21 :: Views: 6715
I plan to build for electronics beginner
-Color LCD (from mobile phone)
-Keypad 4*4 (for each color and number)
press color keypad and display value to LCD or press number keypad and display color to LCD
Hobby Circuits and Small Projects Problems :: 11-08-2004 05:48 :: xdev :: Replies: 2 :: Views: 1598
Do you know any low cost colour graphic LCD module available maybe in China, Taiwan or somewhere else?
Please let me know
Business, Promotions, Advertising :: 05-05-2005 15:54 :: Maverickmax :: Replies: 7 :: Views: 4267
Hi EDA guys,
I have a problem here, Im a working student in my country. I have to access my PC from my home while in my work. I want to access the files from my PC. How will I turn the power on for my PC and connect through the internet automatically so I can access my files while away from home using my old cellphone. (Im using a Nokia (...)
Hobby Circuits and Small Projects Problems :: 02-13-2006 09:22 :: the_risk_master :: Replies: 4 :: Views: 1142
iam doing a project on multiuser detection in cdma but i wasn't able to understand Asynchronous Channel in uplink can anybody help:?:
Digital communication :: 03-18-2006 08:24 :: iffi84 :: Replies: 1 :: Views: 1130
i need to built 2watt amplifier at 900 Mhz is there any single device which can be use for this and can be find easily.
RF, Microwave, Antennas and Optics :: 04-04-2006 23:27 :: zeshan102 :: Replies: 4 :: Views: 1359
u know...those polling scheme...advertise by News Channels...sending sms "Vote A" to number 2525 by mobile. Please anybody know about the technical thing i need to have and to learn so that i can create such polling system by receiving vote or choice from mobile sms.
Network :: 11-08-2006 05:38 :: buts101 :: Replies: 4 :: Views: 1728
Greetings of peace and love!!!
I am a fourth year ece student, and I would like to ask for help about my report, TRANSISTORS FOR INDUSTRIAL APPLICATIONS, I really needed your help.
Thanks ahead and God Bless...!
Electronic Elementary Questions :: 11-30-2006 10:01 :: ee_jm :: Replies: 5 :: Views: 2335
Can anyone give me information about GSM module, what can we do with them, do gsm module need SIM card to communicate and use in projects???
Professional Hardware and Electronics Design :: 01-09-2007 15:49 :: hrhgroup :: Replies: 8 :: Views: 3291
for 64 ifft size 48 subcarriers + 4 pilot signal + 12 zero carrier is this constant value?
if then for 1024 ifft size how many pilot signals and zero carriers needed
another issue is one frame contains how many symbols ??
how to fix FRAME SIZE?
HELP ME PLEASE...........
I AM confused with concepts
Digital communication :: 02-21-2007 14:42 :: venkateshkumar :: Replies: 5 :: Views: 3983
i m doing my final year project that includes autoically sending sms from mobile phone. i m connecting 8051 with T630 using Tx, Rx and Gnd of 8051. i m using MAX232 IC in between microcontroller and mobile phone. i made assembly code to send the AT commands. but i havent got any response from the (...)
Microcontrollers :: 02-24-2007 06:56 :: sagi4u84 :: Replies: 2 :: Views: 1076
Functionality: Monitor the transmission to and reflection from mobile antenna, through loose couplings and in an directional/isolated manner:
e.g. coupling: S31~ -15dB
Concept & Technology
Four-port passive device
Directivity and isolation depend on phase relation and coupling design
Realizable with dist
Analog Circuit Design :: 05-24-2007 17:47 :: volkanozturk :: Replies: 0 :: Views: 698