What is DTMF Decoder , introduction , working of DTMF Decoder , block diagram of DTMF Decoder , components and Implementation of DTMF Decoder
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Wireless Communication via Mobile Phone Using DTMF Vivek chan
This presentation of CyberLab describes complete process that how can we use a mobile phone as a remote control by using DTMF Decoder IC on Second End. Complete circuit diagram and working process is given in slides.
Wireless Communication via Mobile Phone Using DTMF Vivek chan
This presentation of CyberLab describes complete process that how can we use a mobile phone as a remote control by using DTMF Decoder IC on Second End. Complete circuit diagram and working process is given in slides.
DTMF - Dual Tone Multi Frequency Signaling and AVR Atmel Atmega16multi-freque...Robo India
Robo India in this PPT presents the working principles, concept and usages of Dual Tone Multi Frequency Signaling -DTMF.
It also exhibit how to use DTMF with AVR series microcontrollers like Atmel Atmega 16, Atmega 8, Atmega 32 etc.
We welcome all of your views and queries, we are found at-
website: http://roboindia.com
mail- info@roboindia.com
A proof of concept how a land rover could be handled using a cell phone. Using a MT8870 series DTMF decoder, Atmega16 AVR microcontroller, L293D motor driver and 74LS04 NOT gate.
Although the appearance and the capabilities of robots vary vastly, all robots share the feature of a mechanical, movable structure under some form of control. The Control of robot involves three distinct phases: perception, processing and action. Generally, the preceptors are sensors mounted on the robot, the processing is done by the on-board microcontroller or processor, and the task is performed using motors or with some other actuators.
Part of our 3rd year-end Summer project.
DTMF - Dual Tone Multi Frequency Signaling and AVR Atmel Atmega16multi-freque...Robo India
Robo India in this PPT presents the working principles, concept and usages of Dual Tone Multi Frequency Signaling -DTMF.
It also exhibit how to use DTMF with AVR series microcontrollers like Atmel Atmega 16, Atmega 8, Atmega 32 etc.
We welcome all of your views and queries, we are found at-
website: http://roboindia.com
mail- info@roboindia.com
A proof of concept how a land rover could be handled using a cell phone. Using a MT8870 series DTMF decoder, Atmega16 AVR microcontroller, L293D motor driver and 74LS04 NOT gate.
Although the appearance and the capabilities of robots vary vastly, all robots share the feature of a mechanical, movable structure under some form of control. The Control of robot involves three distinct phases: perception, processing and action. Generally, the preceptors are sensors mounted on the robot, the processing is done by the on-board microcontroller or processor, and the task is performed using motors or with some other actuators.
Part of our 3rd year-end Summer project.
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Cell Phone Controlled Home Automation System using DTMF TechnologyTaufique Sekh
This home appliances control or home automation project uses DTMF decoder circuit to control home and office electrical appliances. Just connect your cell phone headset (headphone) jack to the mobile phone and then mobile will control electrical appliances and electrical equipment through the DTMF key pad of your cell phone. Here for demonstrating, we are controlling an electrical bulb using this circuit project but you can extend this circuit to control many electrical devices with some modifications using4×16 decoder IC.
Cell Phone Controlled Home Automation System using DTMF TechnologyTaufique Sekh
This home appliances control or home automation project uses DTMF decoder circuit to control home and office electrical appliances. Just connect your cell phone headset (headphone) jack to the mobile phone and then mobile will control electrical appliances and electrical equipment through the DTMF key pad of your cell phone. Here for demonstrating, we are controlling an electrical bulb using this circuit project but you can extend this circuit to control many electrical devices with some modifications using4×16 decoder IC.
Arm Robot Surveillance Using Dual Tone Multiple Frequency TechnologyIJERA Editor
Surveillance place a pivotal role in addressing a wide range of security challenges .In the present paper we propose a Dual Tone Multiple Frequency ( DTMF) based Robot with video surveillance. In the proposed model a DTMF based Robot with video surveillance with multiple key functions, Arm picker and security system was implemented. Master and slave concept using 3 Microcontroller and motor driver IC to drive motors was implemented and belt wheel platform was used to move the robot from one place to another. Multiple key functions were used to perform more functions and a camera for surveillance .The robot can navigate with the help of the user.
IOSR Journal of Electrical and Electronics Engineering(IOSR-JEEE) is an open access international journal that provides rapid publication (within a month) of articles in all areas of electrical and electronics engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electrical and electronics engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Project Report on HOME AUTOMATION USING DTMF.
The Project “Home Automation using mobile communication” has different sections such as:
1.Microcontroller
2.DTMF decoder
3. Relays
. This project we propose a unique System for Home automation utilizing Dual Tone Multi Frequency (DTMF) that is paired with a wireless module to provide seamless wireless control over many devices in a house. This user console has many keys, each corresponding to the device that needs to be activated. The encoder encodes the user choice and sends via a GSM transmitter. The GSM receiver receives the modulated signal and demodulates it and the user choice is determined by the DTMF decoder. Based upon this the required appliance is triggered.
Microcontroller remote controlling projectBipro Roy
Microcontroller based remote controlling project using mobile phone. with implementing this u can remotely control ur home appliances like fan, light, tv even industrial machines through a mobile phone being in a long distance.
Aim of project is to make use of mobile phone to control robot movement
The movement is controlled by pressing relevant keys on a mobile phone that makes a call to another mobile phone attached to the robot.
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1. National Textile University
Project Proposal
Digital Logic Design
CSC-2072
Title:
DTMF decoder.
Submittedto:
Mr. Nasir Mahmood.
GroupMembers:
Shahmeer Ali (12-NTU-1083)
Mohsin Shoukat (12-NTU-1065)
Ahsan ul Haq (12-NTU-1067)
M. Usman Liaqat (12-NTU-1077)
Introduction:
2. DTMF is a SIPO (Single In Parallel Out) circuit and the abbreviation of Dual-Tone Multi-
Frequency signal which is used by telecommunication companies as a standard to provide
different tasks to their users. Whenever a caller pushes any of the buttons on their keypad a
tone of a unique frequency will be generator with the DTMF generator and sent to the receiver.
The receiver receives the frequency and decodes it using DTMF decoder. So DTMF decoder is a
circuit that decodes the signals generator at the caller side.
This projectconsists of a DTMF decoder as a core of this project which will be connected to the
microphone of a cellphone at receiver side. The cellphone will be in an auto answer mode, so
when the caller calls the receiver the call will be auto-received and when the caller presses
desired button the generated DTMF code will be send to receiver cellphone and decoded using
the DTMF decoder and the 4-bitbinary fromthedecoder will then performdifferenttasks using
relays.
Working:
When the cellphone auto-receives the call, the electric signals will be transferred to the
input signal of DTMF decoder using microphone jack. The frequency of the signals will be the
superposition of two frequencies as shown in the fig.
DTMF decoder decodes the signals and generates a binary code of the key pressed by the caller
as shown in the fig.
3. The output will be a parallel output so simple AND and NOT gate circuits will be used to make
the decisions and switches the replays. Relays will be attached with the circuit that will be
decided by the binary bits of output.
Basic BlockDiagram:
Components needed:
Power supply of 9 volts.
Cellphone with an auto-answering function.
Microphone jack.
DTMF Decoder (MT-8870 OR HT-9170) based on the availability.
AND gate and NOT gate ICs.
Clock generator of (3.579545 MHz) {Oscillator}.
Relay switches.
A 4 to 16 De-Multiplexer.
4. Implementation:
This basic DTMFdecoder circuit can bemodified accordingto the desiredimplementation
and can be used to:
Turn the electronic devices at home on/off while away.
Lock/unlock the door with a mechanical modification.
To access and execute commands on a computer using a specialized software.