This project aims to remotely control home appliances using a mobile phone. A caller can control appliances by pressing buttons on their phone, generating DTMF tones. These tones are decoded by a microcontroller which then activates relays connected to appliances. The microcontroller was programmed in C to activate relays corresponding to different DTMF tone combinations. This allows remote control of appliances from any phone.
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.
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.
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.
DTMF Based speed control of induction motorNiteen Shinde
This Project presented a method to control speed of induction motor using mobile phone and DTMF decoder. From the convenience of a simple cell phone, a user is able to control and monitor virtually any electrical device. This will be essential because of the wide range of technical knowledge that homeowners have. The popularity and availability of the mobile and mobile network makes this kind of control very useful and powerful. The main advantages of the proposed system are its reliability, low cost, and wide area coverage.
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.
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.
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.
DTMF Based speed control of induction motorNiteen Shinde
This Project presented a method to control speed of induction motor using mobile phone and DTMF decoder. From the convenience of a simple cell phone, a user is able to control and monitor virtually any electrical device. This will be essential because of the wide range of technical knowledge that homeowners have. The popularity and availability of the mobile and mobile network makes this kind of control very useful and powerful. The main advantages of the proposed system are its reliability, low cost, and wide area coverage.
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.
World has become flat and life has become really easy today.Bi directional visitor counter is simple and effective project used to count number of persons in an auditorium, classrooms.etc. It can save lots of human power which is very crucial in todays world.
DTMF Based speed control of Induction motorNiteen Shinde
This Project presented a method to control speed of induction motor using mobile phone and DTMF decoder. From the convenience of a simple cell phone, a user is able to control and monitor virtually any electrical device. This will be essential because of the wide range of technical knowledge that homeowners have. The popularity and availability of the mobile and mobile network makes this kind of control very useful and powerful. The main advantages of the proposed system are its reliability, low cost, and wide area coverage.
A Report on Bidirectional Visitor Counter using IR sensors and Arduino Uno R3Abhishekvb
The aim of our project is to make a controller which can sense if any person enters the room and it lights up the room automatically and also counts how many person are entering the room or going out of it.
Bidirectional Visitor Counter using IR sensors and Arduino Uno R3Abhishekvb
The aim of our project is to make a controller which can sense if any person enters the room and it lights up the room automatically and also counts how many person are entering the room or going out of it.
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.
- This paper shows an approach for designing a
system which implement a microcontroller-based control module
that receives its instructions and commands from a cellular phone
over the GSM (Global system for mobile communication)
network. The microcontroller then will carry out the issued
commands and then communicate the status of a given appliance
or device back to the cellular phone.This device allows a user to
remotely control and monitor multiple home/office appliances
using a cellular phone. This system will be a powerful and flexible
tool that will offer this service at any time, and from anywhere
that has network coverage. Due to the fact that the combination
and sequential logic circuits have more components soldered
together, inflexible, more difficult to the user, and not
programmable, the 8951 micro controller was chosen because it
can be written to and read from and also has an internal memory
which makes it to be versatile in application and user
friendly. Apart from the micro controller, other electrical /
electronic components used include: resistors, filters, voltage
regulator, transformer, rectifiers, capacitors, DTMF (Dual Tone
Multi Frequency) Integrated circuit etc.
What is DTMF Decoder , introduction , working of DTMF Decoder , block diagram of DTMF Decoder , components and Implementation of DTMF Decoder
Visit my Blog for more Education Material .Thanks
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The aim of the proposed system is to develop a cost effectivesolution that will provide controlling of home appliancesremotely and enable home security against intrusion in theabsence of homeowner. The system provides availability due to development of a low cost system. The home appliances control system with an affordable cost was thought to be built that should be mobile providing remote access to the appliances and allowing home security. Though devices connected as home and office appliances consume electrical power. These devices should be controlled as well as turn on/off if required. Most ofthe times it was done manually. Now it is a necessity to control devices more effectively and efficiently at anytime from anywhere.
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.
Similar to Microcontroller remote controlling project (20)
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The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
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2. Heatmap utilization for testing
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4. Demo
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2. ABSTRACT
Aim of the project is to use a mobile phone to control home
appliances.
With this project a caller can remotely control home
appliances by pressing different keypad buttons which
generates identical DTMF signal.
To get desired controlling output using Microcontroller.
3. Control of home appliances involves 3 different phases
1. Perception
2. Processing
3. Action
INTRODUCTION
4. PERCEPTION
First part is the decoding of DTMF tone generated by
pressing a key in calling phone.
Audio signal output from receiving phone is fed to DTMF
decoder chip.
Decoder chip converts DTMF tone into binary codes to be
fed to Microcontroller.
5. PROCESSING
After perception stage, microcontroller processes the binary
codes it receives
Microcontroller is pre-programmed in ”C” to perform specific
task according to input bits.
Program is written in AVR Studio and Simulated in Proteus7.7
software.
6. ACTION
Final stage is to switching ON/OFF the home appliances
connected across the main power line of 220 V 50 Hz
AC.
For switching purpose electromagnetic Relays were
used.
7. BASIC BLOCK DIAGRAM OF THE PROJECT
Figure 1. Basic block diagram of the project (ref.p-4 )
8. DTMF- Dual Tone Multi Frequency.
• DTMF is the signal that generates upon pressing an ordinary
telephone’s any keypad button.
• Signal generated by the superposition of two pure sinusoidal
tones.
• One is high frequency & another is low frequency tone signal.
9. 1 2 3 697
4 5 6 770
7 8 9 852
* 0 # 941
1209 1336 1477 Frequency(Hz)
Each button lies at the intersection of the two tones
Table 1- Row and column frequency correspondence
10. Structure of 8870 DTMF decoder
Figure 2- Structure of 8870 DTMF decoder (ref. p-6 )
12. ATmega 16 Microcontroller Features
High performance, Low power 8 bit Microcontroller.
16 KB Flash Memory with read and write capabilities.
512 Bytes EEPROM.
1 KB Internal RAM.
32*8 General purpose working Registers.
Three timers.
Internal/ External Interrupts.
13. Working Procedure
The operation is initiated by calling the second mobile phone at
receiving end.
Mobile at receiving end receives the DTMF signals, which is
generated by pressing the keypad of caller mobile phone.
DTMF signal is passed to the DTMF decoder IC 8870 and
decodes binary outputs.
Binary output is inverted using IC 7404.
The inverted output is fed to the input PORT A of the
Microcontroller.
The Microcontroller then gives desired output as it was
programmed.
When any output pin of PORT D becomes high then connected
corresponding Relay become active and it makes the circuit close
to switch ON any circuit or Device.
14. Number
pressed by
user
Output of DTMF
decoder
Input to
microcontroller
Output from
microcontroller
Action
performed
2 0x02
0010
0x0D
1101
0x00
00000000
Both relays off
4 0x04
0100
0x0B
1011
0x01
00000001
One relay on
6 0x06
0110
0x09
1001
0x02
00000010
Another relay on
8 0x08
1000
0x07
0111
0x03
00000011
Both relays on
Table 3-Actions performed corresponding to the key pressed
15. • Microcontroller program was written in C language on AVR Studio.
• Program was converted into desired Hex file using AVR Studio.
• Circuit was simulated in Proteus 7.7 Software
Simulation circuit is given in Figure 3
18. RELAY
Relay is an electromagnetic switch.
It consists of a control coil and a load circuit.
Control coil controls the operation and load circuit is a
switch.
Current flowing through the control coil creates a small
magnetic field causes the load circuit switch to close and
relay is then active.
20. Microcontroller output pin PD0 and PD1 are connected with
relays through BC 547 transistor.
When transistor becomes ON then relay also be active.
A relay used as a switch of the home appliance which is
connected across the main power supply 220 V- 50 Hz AC.
Here two 220V – 10 W bulbs are used as home appliances.
21. APPLICATION
The system can be used in controlling home appliances.
Can be used in office, lab ,class and factory etc.
This setup with a little modification can be adapted to the following applications
1) Combination Lock
2) Home Security System
3) Mobile / Wireless Robot control
4) Wireless Radio Control
5) Continuous monitoring of system status