Bluetooth Controlled Robot/Car

Mar 30, 2014Download as PPTX, PDF56 likes36,975 views

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.

(ATmega8 Serial Communication via Bluetooth)
Stack Project

The project aims at
designing a Robot
which can be
controlled using
Bluetooth

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.

ATMEGA-8
Microcontroller
HC-05
Bluetoo
th
module
L293D Motor
Driver
Android
phone /
Laptop

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

RF based Wireless
Technology
Low cost , short
range
less power
consuming
Speed less
than 1
Mbps!

HC-05 is an
embedded
Bluetooth serial
communication
module
It has two work
modes
• order-response work
mode
• automatic connection
work mode

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

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

• 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

Full duplex Asynchronous or
Synchronous Operation
Master or slave synchronous
operation
Framing Error Detection
Multi-processor
communication Mode
Double speed Asynchronous
Communication Mode.

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

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

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

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

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
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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.

5. ATMEGA-8 Microcontroller HC-05 Bluetoo th module L293D Motor Driver Android phone / Laptop

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.

Bluetooth Controlled Robot/Car

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Editor's Notes