Ppt Slide for Presentation

PC OPERATED WIRELESS ROBOT

By: G.MURALI KRISHNA (07591A0481) G. MAHESH KUMAR (07591A0479)

Introduction

AIM : The Main Aim of This project is to control the robot with PC

through wireless.

Robot can move either Forward or Backward, Left or right through the set of Commands given from the PC.

TECHNOLOGY USEDThis project basically uses Radio frequency(RF) Technology to transmit and receive the data wirelessly

Radio frequency (RF) is a rate of oscillation in the range of about 30 kHz to 300 GHZ

RF Transmitter : RF transmitter are the electronic devices that create continuously varying electric current , encode sine waves , and broadcast radio waves.

RF Receiver: RF receivers are electronic devices that separate radio signals from one another and convert specific signals into audio, video, or data formats. RF receivers use an antenna to receive transmitted radio signals and a tuner to separate a specific signal from all of the other signals that the antenna receives.

HARDWARE REQUIREMENTS

TRANSMITTER SECTION:

•Microcontroller

•RF transmitter

•Encoder

•MAX 232

•PC

RECEIVER SECTION :

•Microcontroller

•RF receiver

•Decoder

•H-bridge

Block Diagram Transmitter

RECEIVER

REGULATED POWER SUPPLY:

MICRO CONTROLLER (AT89C51)

The AT89C51 is a low-power, high-performance CMOS 8-bit microcontroller with 4K bytes of in-system programmable Flash memory

Fig : - Pin diagram of AT89C51

at89c51 features:

•Compatible with MCS-51® Products• 4K Bytes of In-System Programmable (ISP) Flash Memory• 4.0V to 5.5V Operating Range• 128 x 8-bit Internal RAM• 32 Programmable I/O Lines• Two 16-bit Timer/Counters• Six Interrupt Sources• Full Duplex UART Serial Channel• Low-power Idle and Power-down Modes

RF Section

RF Transmitter: RF Receiver:

RF Section specifications

•The ST-TX01-ASK is Hybrid transmitter module

• Its specifications:

• Frequency Range: 315 / 433.92 MHZ.

•Supply Voltage: 3~12V.

•Output Power: 4~16dBm.

•Circuit Shape: Saw.

•The RX04 is an ASK Receiver module

•Its specifications:

•Integrated IF and data filters.

•Operation voltage: 5 Volts.

•Low power consumption.

•Operation temperature range : 10﹣ ℃ ～＋ 60 ℃

RS 232 cable:

To allow compatibility among data communication equipment, an interfacing standard called RS232 serial cable is used. A serial cable is a cable that can be used to transfer information between two devices using serial communication

Max 232The data which we are entering in to the hyper terminal editor is available at the COM1 port. Then the data enters in to the MAX232 voltage converter via the RS232 cable. The MAX232 converts the voltage levels of the RS232 to the TTL level and then sends to the UART of the microcontroller. So the main duty of the max232 is for the voltage conversions.

RS-232 TTL Logic----------------------------------------------15V ... -3V <-> +2V ... +5V <-> 1+3V ... +15V <-> 0V ... +0.8V <-> 0

Each H-Bridge having two inputs. Micro controller gives input to H-Bridge to control the direction of the robot. Based on the given inputs to the H-Bridge, the motor will be rotates either in clock-wise or in anti-clock wise direction. So that the movement of the robot will be controlled.

SOFTWARE COMPONENTS

•EMBEDDED C•KEIL•PROTEUS

Transmitter schematic:

Receiver Schematic

Photograph of Project Kit:

CONCLUSION

The project “PC OPERATED WIRELESS ROBOT CONTROLLING” has been successfully designed and tested.

Secondly, using highly advanced IC’s and with the help of growing technology the project has been successfully implemented.

FUTURE ASPECTS

In this project, the robot controlling is done with the help of the PC through the RF communication. The RF modules which are using in this project are less range depending on the cost effective we are not preferring the other high range modules.

Wireless is finding a huge development in Communications. So this project can further be enhanced with the help GSM and zigbee etc communication technologies.  

THANK YOU