final yr project and implimentation
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Kriti Priya
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Joined: Aug 2010
26-08-2010, 03:00 AM

i am planning to make a 'cellphone operated robot' as my final year project and implimentation.
any form of help is highly appreciated. thanks!
project report helper
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21-09-2010, 06:03 PM

for more info about 'cellphone operated robot' and implimentations

Cellphone operated Robot
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by Nitin Sharma

introCellphone operated Robot
Conventionally, Wireless-controlled robots use rf circuits, which have the drawbacks of limited working range, limited frequency range and the limited control. Use of a mobile phone for robotic control can overcome these limitations. It provides the advantage of robust control, working range as large as the coverage area of the service provider, no interference with other controllers and up to twelve controlles.
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 , processing is done by the on-board microcontroller or processor, and the task is perfomed using motors or with some other actuators.

i want to make it clear, if you face any problem i am dere for you
, you can write comments or you can mail me at

In this project and implimentation the robot, is controlled by a mobile phone that makes call to the mobile phone attached to the robot in the course of the call, if any button is pressed control corresponding to the button pressed is heard at the other end of the call. This tone is called dual tone multi frequency tome (DTMF) robot receives this DTMF tone with the help of phone stacked in the robot
The received tone is processed by the atmega16 microcontroller with the help of DTMF decoder MT8870 the decoder decodes the DTMF tone in to its equivalent binary digit and this binary number is send to the microcontroller, the microcontroller is preprogrammed to take a decision for any give input and outputs its decision to motor drivers in order to drive the motors for forward or backward motion or a turn.
The mobile that makes a call to the mobile phone stacked in the robot acts as a remote. So this simple robotic project and implimentation does not require the construction ofreceiver and transmitter units.
DTMF signaling is used for telephone signaling over the line in the voice frequency band to the call switching center. The version of DTMF used for telephone dialing is known as touch tone.
DTMF assigns a specific frequency (consisting of two separate tones) to each key s that it can easily be identified by the electronic circuit. The signal generated by the DTMF encoder is the direct al-gebric submission, in real time of the amplitudes of two sine(cosine) waves of different frequencies, i.e. ,pressing 5 will send a tone made by adding 1336hz and 770hz to the other end of the mobile.

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21-09-2010, 08:32 PM

can u send me a full project and implimentation report relating to
1. pic microcontroller --->smart card based door access system with LCD and
2.pc interface---->PC based door access and attendance logger using smart card(kit with 4 cards)
.....thanx in adv.....

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