Mobile phone controlled four-legged walking robot with speed and direction control Related Courses: In recent years, practical mobile robots have been successfully used in controlled environments such as factories, offices, and hospitals, as well as outdoors on prepared surfaces and terrain with minor irregularities.
The idea was to allow important traffic to get through every ti me. A hand held mobile phone is used as the transmitter. The receiver is the robotic car that includes a mobile phone on the auto answer mode, DTMF decoder, microcontroller and motor drivers.
The blocks of the receiver model are explained in detail in this section. It makes it easier to drive the DC motors. Motor Driver The LD consists of four drivers. Drivers 1 and 2, and drivers 3 and 4 are enabled by enable pin 1 EN1 and pin 9 EN2respectively.
When enable input EN1 pin 1 is high, drivers 1 and 2 are enabled and the outputs corresponding to their inputs are active. Similarly, enable input EN2 pin 9 enables drivers 3 and 4 , . All types of the MT series use digital counting techniques to detect and decode all the 16 DTMF tone pairs into a 4-bit code output.
The built-in dial tone rejection circuit eliminates the need for pre-filtering. When the input signal given at pin 2 IN- in single-ended input configuration is recognized to be effective, the correct 4-bit decode signal of the DTMF tone is transferred to Q1 pin 11 through Q4 pin 14 outputs D0 through D3 outputs of the DTMF decoder IC1 are connected to port pins of Microcontroller .
The on-chip Flash allows the program memor y to be reprogrammed in-system or by a conventional nonvolatile memor y programmer. By combi ning a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel microcontroller is a powerful microcomputer, which provides a highly flexible and cost effective solution so many embedded control applications.
The microcontroller output is not sufficient to drive the DC motors, so current drivers are required for motor rotation . You can have either a two- wheel drive or a four-wheel drive. Though four-wheel drive is more complex than two-wheel drive, it provides more torque and good control.
Two-wheel drive, on the other hand, is very easy to construct. Motors are fixed to the bottom of this sheet and the circuit is affixed firml y on top of the sheet.
A cell phone is also mounted on the sheet. In the four-wheel drive system, the two motors on a side are controlled in parallel.
In order to control the robot, you need to make a call to the cell phone attached to the robot through head phone from any phone, which sends DTMF tunes on pressing the numeric buttons.
Transmitter and Receiver Blocks So after a ring, the cell phone accepts the call. Now you may press any button on your mobile to perform actions.Cell Phone Operated Robotic Car Awab Fakih, Jovita Serrao Abstract Conventionally, wireless-controlled robots use RF circuits, which have the drawbacks of .
The research paper published by IJSER journal is about Cell Phone Operated Robotic Car. Dec 08, · Introduction: Cellphone Operated Robot. cell phone operated initiativeblog.com Download. Add Tip Ask Question Comment Download. hi, i m using an atmega16 microcontroller for my dtmf operated car.
i have used 4 motors. i cannot get my code right. please help me with the code if possible. CNET brings you the best deals on tech gadgets every day. For exclusive offers on smartphones, tablets, cameras and more, find your discount here!
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IJSRD - International Journal for Scientific Research & Development| Vol. 2, Issue 12, | ISSN (online): DTMF Based Controlled Robot Vehicle Raj Hakani1 1 Department of Electronics & Communication Engineering 1 Gandhinagar, Gujarat Abstract— In this paper, we can control the Robot using Dual Tone Multi Frequency (DTMF) technology.