Bluetooth Controlled Robot/Car
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This project aims to design a Bluetooth controlled robot car that can be controlled using an Android phone or laptop. An Atmega8 microcontroller is used for serial communication via a Bluetooth HC-05 module using embedded C programming. The HC-05 module allows wireless Bluetooth control of the robot car from a phone or laptop. An L293D motor driver is used to control the motors based on commands received over Bluetooth from the Android device.
Bluetooth Controlled Robot/Car
- 1. (ATmega8 Serial Communication via Bluetooth) Stack Project
- 2. The project aims at designing a Robot which can be controlled using Bluetooth
- 3. Bluetooth controlled car is a robot which is built using Atmega8 Microcontroller in which serial communication is done via Bluetooth and programming is done in embedded C language.
- 6. High performance and low power microcontroller RISC Architecture Up to 16MIPS throughput 16MHz 1 KB RAM and 512 Bytes EEPROM Programmable Serial USART Programmer friendly
- 8. RF based Wireless Technology Low cost , short range less power consuming Speed less than 1 Mbps!
- 9. HC-05 is an embedded Bluetooth serial communication module It has two work modes • order-response work mode • automatic connection work mode
- 10. Command Response Parameter AT OK None AT+RESET OK None AT+VERSION? +VERSION: <Parameter> OK Parameter: Version number AT+ORGL OK None List of AT Commands
- 11. AT+PSWD=<Param> OK AT+ PSWD? + PSWD : <Param> OK ” Param: passkey Default: “1234 AT+UART=<Param1>, <Param2>,<Param3> OK Param1-baud rate Usually 9600 Param2-stop bit Param3- parity bit
- 12. • Common Specifications of HC-05: • Radio Chip : CSR BC417 • Memory : External 8Mbit Flash • Output Power: : -4 to +6 dbm class 2 • Sensitivity : -80dbm Typical • Bit Rate : EDR, up to 3Mbps • Interface : UART • Antenna : Built-in • Dimension : 27W x 13H mm • Voltage : 3.1 to 4.2 VDC • Current : 40mA max Important Specs Of HC-05
- 13. Full duplex Asynchronous or Synchronous Operation Master or slave synchronous operation Framing Error Detection Multi-processor communication Mode Double speed Asynchronous Communication Mode.
- 14. RXC TXC UDRE FE DOR PE U2X MPCM R R/W R R R R R/W R/W 0 0 1 0 0 0 0 0 Register A : UCSRA Register B: UCSRB RXCIE TXCIE UDRIE RXEN TXEN UCSZ2 RXB8 TXB8 R/W R/W R/W R/W R/W R/W R R/W 0 0 0 0 0 0 0 0 Our Value : UCSRA -OXOO Our Value : USCRA - 0X18
- 15. URSEL UMSEL UPM1 UPM0 USBS USCZ1 UCSZO UCPOL R/W R/W R/W R/W R/W R/W R/W R/W Register C: USCRC 1 0 0 0 0 1 1 0 URSEL - - - UBRR-11 UBRR-10 UBRR-9 UBRR-8 UBRR-7 UBRR-6 UBRR-5 UBRR4 UBRR-3 UBRR-2 UBRR-1 UBRR-0 UBRRH UBRRL: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Our Value: UCSRC – 0x86 Our Value: UBRRH, UBRRL - 75
- 17. PUSH-PULL four Channel Driver with Diodes Designed to accept standard DTL or TTL logic levels and drive inductive loads and switching power transistors Suitable for use in switching applications at frequencies up to 5KHz It is assembled in a 16 lead plastic package which has 4 centre pins connected together and used for heat sinking. L293D MOTOR DRIVER
- 19. Is an operating system based on Linux Kerenel It is designed primarily for touch screen mobile devices like smart phones and tablet computers User interface of android is based on Direct Manipulation Internal hardware such as accelerometers, gyroscopes and proximi ty sensors are used by some applications to respond to additional user actions
- 21. Can be used in examining mini tunnel and can also be used in rescuing. Concept can be used to control Home switch circuits using Relay circuit APPLICATIONS
Editor's Notes
- #18: DTL means Diode Transistor Logic
- #20: direct manipulation is a human–computer interaction style which involves continuous representation of objects of interest and rapid, reversible, and incremental actions and feedback.[1] As opposed to other interaction styles, for example, a command language, the intention of direct manipulation is to allow a user to manipulate objects presented to them, using actions that correspond at least loosely to the physical world. An example of direct-manipulation is resizing a graphical shape, such as a rectangle, by dragging its corners or edges with a mouse.The user interface, in the industrial design field of human–machine interaction, is the space where interaction between humans and machines occurs.