Indian Institute of Technology Hyderabad PC CONTROLLED BOT D. HARISH KUMAR CE12B1005 N. ABHINAND SAI CS12B1027 G.NITiSH EE12B1008

Why this project? 1) It is a wired bot which is controlled by pc through a micro controller connected to the motor 2) We can use them for bomb defusing purpose 3)We can use them as fire extinguishers when dangerous explosives are present in a room like chemistry lab 4)It can be used as a self controlling wheel chair for the physically retarded persons

MICROCONTROLLER 1)A microcontroller is a small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals 2)Microcontrollers are used in automatically controlled products and services. 3) CPU, RAM, ROM, I/O and timer are all on a single chip. 4)For applications in which cost, power and space are critical.

Atmega8:Pin Description  28 Pin DIP Package  23 pins are used for the 3 ports.  6 channel 10 bit resolution ADC  Inbuilt I2C, SPI, UART features  Connections for clock crystal.  8K Bytes of ISP Flash  512 Bytes EEPROM, 1K Bytes SRAM 

PARALLEL AND SERIAL COMMUNICATION  Data can be transmitted from a sender and a receiver in two main ways: serial and parallel  Serial communication is the method of transmitting one bit at a time through the medium  Parallel communication is the method of transferring blocks,eg:bytes,of data at the same time  By this we can know that parallel communication is faster than serial communication  However the use of parallel communication is not feasible for long distances for economic and practical reasons

UART COMMUNICATION PROTOCOL  A universal asynchronous transmitter/receiver abbreviated uart is a piece of computer hardware that translates data between parallel and serial forms  A UART is usually an individual (or part of an) integrated circuit used for serial communications over a computer or peripheral device serial port  The Universal Asynchronous Receiver/Transmitter (UART) takes bytes of data and transmits the individual bits in a sequential fashion. At the destination, a second UART re-assembles the bits into complete bytes. Each UART contains a shift register, which is the fundamental method of conversion between serial and parallel forms

ASCII CODES  The America Standard Code for Information Interchange is a character-encoding scheme originally based on the english alphabet. ASCII codes represent text in computers, communication equipment, and other devices that use text. Most modern character-encoding schemes are based on ASCII, though they support many additional characters.

How it works?  When we press a key in on the key board it transmits the corresponding ASCII value to the microcontroller through USART communication.  In microcontroller, it checks that ASCII value and according to that it takes corresponding action in we specified in the program.

ADVANCEMENTS  We can make advancements in humanoid robots which can be controlled by a doctor that can do surgery. it helps a lot in emergency situations  We can make a bot that can be controlled from earth via satellite communication.This helps in exploring the other planets