In this demo we are using 6v/2amps 1.8degree stepper motor.In this circuit CD4050 hex buffer using to connect to the microcontroller.The output of cd4050 is connected to the TIP122 of the BASE.The Emitter and collecter is conneted to 1N4007 diode the colleter of tip122 is connected to the stepper motor coil.
In this demo we are using Uni polar Stepper motor using 6wires, the color coding of the stepper motors are Black coil 1, Red coil 2, Green coil 3, Yellow coil 4 and 2 white are connected to give 6V input supply voltage.

stepper motor driver:

#include “reg51.h”

void delay(unsigned int y);
void rotate()
{
P1=0×09;
delay(30);

P1=0×05;
delay(30);

P1=0×06;

delay(30);

P1=0×0a;
delay(30);
}
void delay(unsigned int y)
{
int i,j; //delay subroutine

for(i=0;i<=y;i++)
for(j=0;j<=498;j++);
}
void main()
{

while(1)
{
rotate();

}
}
//*******************************************//
Stepper motor circuit using TIP122:

Description:
In this project we are used simple IR Sensors, IR transmitter led and IR Receiver Led using LM358 circuit.IR Led supply voltage is +5v the output of the IR in this particular circuit is normally LOW 0 volt, the obstacle will cross the IR LED output is High > 4 volt.In this project the output of the IR LED pin is connected to the 8051 micro controller port pin P1.0. In this project 2*16 LCD is use to display the counting numbers. The LCD circuit RS pin P3.6 and E/N pin is P3.7 and DATA Pin is connected to PORT 0. In this project port 2 LED is connected to display the counting numbers in the LED also..In this project is used for bottle counting in the bottling plant like coca-cola, Pepsi, in this project slightly modification to display in the 7segment display also..

C Code:

/*program for IR Sensor based VISITOR COUNTER */

#include
#include
#define LCD_clear() LCD_command(0×01) /* Clear LCD Display
#define LCD_orgin()LCD_command(0×02) /* set to orgin LCD
#define LCD_row1() LCD_command(0×80) /* Begin at 1st line
#define LCD_row2()LCD_command(0xc0) /* Begin at 2nd line

sbit port10=P1^0; //IR Sensor Input
sbit rs=P3^6; //Lcd Register Select Pin
sbit en=P3^7; //Lcd Enable Pin

static unsigned char counter;

void lcd_en() //Funtion for LCD Enable
{
en=1;
en=0;
}

void LCD_delay(unsigned char ms) //Function for create Time Delay
{
unsigned int n,i;
for(n=0;n {
for(i=0;i<1536;i++);
}
}

void LCD_command(unsinged char command) //LCD Command Pass Funtion
{
rs=0;
P0=command;
lcd_en();
LCD_delay(1);
}
void LCD_init() //LCD intialization funtion
{
LCD_command(0x38);
LCD_command(0x06);
LCD_command(0x0c);
LCD_command(0x01);
}
void LCD_putc(unasigned char ascii)
{
rs=1;
P0=ascii;
lcd_en();
LCD_delay(2);
}
void LCD_puts(unsigned char *lcd_string)
{
while(*lcd_string)
{
LCD_putc(*lcd_string++);
}
}
void disp(unsinged char name1)
{
rs=1;
P0=name1;
lcd_en();
lcd_delay(300);
}
void main()
{
port10=0; //make P1.0 as init=0, initially all port pins are high
P2=0; //make low for P2
LCD_init(); //call LCD initialization function
while(1) //Run forever always true
{
if(port10) //check condition P2.0 is high P2.0==1
{
LCD_command(0x80); //LCD command for display first line
LCD_puts("visit count="); //String display in the LCD
{
disp(((counter%10000)/1000)+48);
disp(((counter%1000)/100)+48);
disp(((counter%100)/10)+48);
disp(((counter%10)/1)+48);
}
}
P2=counter; // 8 LED's conneted in PORT 2
LCD_comman(0xc0) //LCD command for display 2nd line
LCD_puts("www.embed4u.com");
}
}

Description:
In this interface session we are interface mcp3202 adc interface with 8051 microcontroller. Mcp3202 is a 12bit spi protocol adc, is interface with P89v51rd2 microcontroller,this microcontroller have spi protocol so no need to worry about SDI,SDO,CLCK.
Interface mcp3202 to 8051 microcontroller CS is P2.2 and MOSI is connected to P1.5 and MISO is P1.6, SCK is P1.7 refer the P89v51rd2 datasheet and MCP3202 datasheet.In this session our kit LCD P0 is for Data and P3.6 is R/s Register Select and P3.7 is for E/N Enable pin.You have interface these adc is very easy just copy we code and compile using keil or Ride compiler without no errors. U have to only P89v51rd2 compiler because the spi protocol library function is there in the header file.

c code:

#include “p89v51rd2.h”
#include “stdio.h”
#include “string.h”
#define LCD_clear() LCD_command(0×01) /* Clear display LCD */
#define LCD_origin() LCD_command(0×02) /* Set to origin LCD */
#define LCD_row1() LCD_command(0×80) /* Begin at Line 1 */
#define LCD_row2() LCD_command(0xC0)
sbit rs = P3^6;
sbit en = P3^7;
sbit cs = P2^2;

void delay ();
void display(int name1);
void spi ();
//****************************************************************************//
void lcd_en ()
{
// rw=0;
en = 1; en = 1; en = 1;
en = 0; en = 0;
}
void LCD_delay(unsigned char ms)
{
unsigned int n;
unsigned int i;
for (n=0; n {
for (i=0; i<1535; i++); /* For 1 ms */
}

}
void LCD_command(unsigned char command)
{
rs=0; rs = 0;
P0 = command;
lcd_en ();
LCD_delay(1);

}

void LCD_init()
{
LCD_command(0×38);
LCD_command(0×06);
LCD_command(0×0c);
LCD_command(0×01);
}

void LCD_putc(unsigned char ascii)
{
rs=1;
P0 = ascii;
lcd_en ();
LCD_delay(2);
}

void LCD_puts(unsigned char *lcd_string)
{
while (*lcd_string)
{
LCD_putc(*lcd_string++);
}
}

void display(int name1) //LCD display routine for digits display
{

rs = 1;
P0 = name1;
lcd_en();
LCD_delay(10);
}
void delay1()
{
int i =20000;
while(i–);
}

//**************************************************************************//
void spi ()
{
SPCTL = 0X5C;
}
void main (void)
{
char c,i;
int e=0;
LCD_init();
spi ();
cs = 0;
while(1)
{
SPDAT = 0XC0;
while (SPCFG != 0X80);
SPCFG = 0;
c = SPDAT;

SPDAT = 0XFF;
while(SPCFG != 0X80);
SPCFG = 0;
i = SPDAT;
cs = 1;
cs = 1;
cs = 0;

e = c;
e = e<<8;
e = e | i;
e = e<<1;
e = e & 0×0fff;
LCD_puts(”MCP3202 ADC”);//display in LCD
LCD_command(0xc0);
delay1();
{
display(((e%10000)/1000)+48); // ,,
display(((e%1000)/100)+48); // ,,
display(((e%100)/10)+48); // ,,
display((e%10)+48); // ,,
}
delay1();
LCD_delay(500);
LCD_command(0xc5);
LCD_command(0×01);

printf(”%d\n”,e);
}

Circuit Diagram:

C CODE:

MAIN PROGRAM:

#include #include “servo.h”

void PowerOn()
{
unsigned char inner, outer;

IE = 0×00;
P1 = 0xFF; /* Motor STOP */

for (outer = 0×00; outer < 0x10; outer++) { /* Delay for a while */
for (inner = 0x00; inner < 0xFF; inner++);
}

Servos_init();

IE = 0x80; /* Start interrupt */
}

void main()
{
PowerOn();

ServoR_forward();
ServoL_back();

while (1);
}

SERVO HEADER C SOURCE FILE:
/*
* Filename : servos.h
* Hardware : Controller -> P89V51RD2
* XTAL -> 11.0592 MHz
* Mode -> 6 Clock/MC
* I/O : P1.4 -> Left (PWM-CEX1)
* P1.5 -> Right (PWM-CEX2)

/* Control the Left servo */
void ServoL_back()
{
CCAP1H = 243;
}

void ServoL_forward()
{
CCAP1H = 230;
}

void ServoL_stop()
{
CCAP1H = 0;
}

/* Control the Right servo */
void ServoR_back()
{
CCAP2H = 230;
}

void ServoR_forward()
{
CCAP2H = 243;
}

void ServoR_stop()
{
CCAP2H = 0;
}

/* Initialize the PCA and PWM mode */
void Servos_init()
{
/* Initial Timer0 Generate Overflow PCA */

TMOD = 0×02; /* Timer0 Mode2 : 8bit auto reload */
TH0 = 16; /* 256-240, 8.125usec Auto-relead (20msec/PWM) */
TL0 = TH0;
TCON = 0×10; /* setb TR0, TCON or 0001,0000*/

/*
Initial PWM Period = 20mS (11.0592MHz /6-Cycle Mode)
Initial PCA Count From Timer0 Overflow
1 Cycle of Timer0 = (1/11.0592MHz)x6 = 0.543uS
Timer0 AutoReload = 240 Cycle = 78.125uS
1 Cycle PCA = [(1/11.0592MHz)x6]x240 = 78.125uS
Period 20mS of PCA = 20ms/78.125us = 256(CL Reload)
CL(20mS) = 256 Cycle Auto Reload
Load CCAPxH(1.0mS) = 256-13 = 243 (243,244,…,255 = 13 Cycle)
Load CCAPxH(2.0mS) = 255-26 = 230 (230,231,…,255 = 26 Cycle)
*/
CMOD=0×04;
CCAPM1=0×42;
CCAPM2=0×42;
CCAP1H=0×00;
CCAP2H=0×00;
CCON=0×40;
}

CODE PROJECT TITLES YEAR
HSPIC001 Development of a distributed elevator control system based on the microcontroller PIC 18F458 2010
HSPIC002 Implementation of GPRS-Based Positioning System Using PIC Microcontroller 2010
HSPIC003 Design of Electrical Air-Condition Control System for Fuel Cell Vehicle Based on CAN Bus 2010
HSPIC004 Wireless Vehicular Accident Detection and Reporting System 2010
HSPIC005 A prototype Of Web Based Temperature Monitoring system 2010
HSPIC006 Research and Design of Intelligent Temperature Control System 2010
HSPIC007 360° sun tracking with automated cleaning system for solar PV modules 2010
HSPIC008 Wireless security control system & sensor network for smoke & fire detection 2010
HSPIC009 Control of solar water heater design 2011
HSPIC010 RTOS for PIC18 microcontrollers 2010
HSPIC011 Intelligent Electric Valve Design of the Application of PIC Single Chip Microcomputer 2010
HSPIC012 PIC microcontroller based Home Safety System 2010
HSPIC013 Thermocouple for temprature measurement application for industries 2010
HSPIC014 Multitasking application porting FreeRTOS for pic microcontrollers 2010
HSPIC015 GSM Modem interface for Parameter Measurement and Control 2010
HSPIC016 RFID based Toll gate 2010
HSPIC017 Zigbee based industrial parameter monitor and control 2010
HSPIC018 GLCD interface with pic microcontrollers 2010
HSPIC019 Touch screen based industrial machine control 2010
HSPIC020 Pic based temprature,humudity,pressure Monitor system
CODE PROJECT TITLES YEAR
HSARM001 Design of monitors based on ARM7 and Micro C/OS-II. 2010
HSARM002 Automated voice based home navigation system for the elderly and the physically challenged 2011
HSARM003 Design of remote data acquisition system of passenger flow based on GPRS 2010
HSARM004 Design of intelligent Mobile Vehicle Checking System based on ATM7 2010
HSARM005 WiFi implementation of Wireless Networked Control Systems 2010
HSARM006 Design and implementation of embedded indoor intelligent temperature control system using ARM7 2010
HSARM007 Embedded on-road nighttime vehicle detection and tracking system for driver assistance 2010
HSARM008 Touch-screen terminal application for remote data based on authorized access 2011
HSARM009 The study and design of multi-function detective devices of drug boxes 2011
HSARM010 Design and realization of an intelligent access control system based on voice recognition 2011
HSARM011 Labeling the World: Tagging Mass Products with Printing Processes 2010
HSARM012 ARM9 Multi-task Data Acquisition System Intelligent Improvement 2011
HSARM013 The research of based on ARM9 core units embedded video monitor system 2011
HSARM014 An Embedded System of Bridge Stress Monitoring Based on ARM9 and Zigbee 2011
HSARM015 ARM9-based real-time acquisition of orchard soil information and GPRS wireless transmission control system 2010
HSARM016 The design of granary environmental monitoring system based on ARM9 and ZigBee 2010
HSARM017 Design of embedded video capture system based on ARM9 2011
HSARM018 Design and implementation of a remote video monitoring system based on embedded Linux 2010
HSARM019 Embedded control system design for coal mine detect and rescue robot 2010
HSARM020 Design and implementation of an embedded web server based on ARM 2010
HSARM021 An embedded vision system for robotic fish navigation 2010
HSARM022 Design of transport vehicles remote monitoring system 2010
HSARM023 Design and Implementation of Production Environment Monitoring System Based on GPRS-Internet 2010
HSARM024 Design of Intelligent Security System Based on ARM Microcontroller 2010
HSARM025 Design and development of microcontroller based electronic queue control systems 2010
HSARM026 Design of Embedded Control System Based on ARM9 Microcontroller 2010
HSARM027 Design and Implement of the Embedded Elevator Monitor System Based on Wireless Communication 2010
HSARM028 Implementation of CAN bus device driver design base on embedded system 2010
HSARM029 Design and implementation of embedded indoor intelligent temperature control system 2010
HSARM030 Design and implementation of home remote monitor system based on embedded system 2010
HSARM031 ARM9-based embedded controller of the boiler combustion 2011
HSARM032 Design of an Intelligent Book Conveyor based on RFID 2010
HSARM033 Slip motor speed control system based on LPC2148 and low cost CMOS camera 2010
HSARM034 IR indoor localization and wireless transmission for motion control in smart building applications 2010
HSARM035 Smart parking reservation system using short message services (SMS) 2010
HSARM036 Low power scheduled alarm system using embedded microcontroller with USB interface 2011
HSARM037 Research on a self-powered wireless ultrasonic flow sensor system 2010

CODE PROJECT TITLES YEAR
HSLINUX001 Research and Implementation of the CMOS Camera Device Driver Based on S3C2440 2010
HSLINUX002 Linux Based Unauthorized Process Control 2011
HSLINUX003 Methods and skills on transplanting Linux to ARM S3C2410 2010
HSLINUX004 Client-server upgrade model of design and realization based on embedded linux 2011
HSLINUX005 The Research of Qt/Embedded and Embedded Linux application in the Intelligent Monitoring System control 2010
HSLINUX006 PDA design based on embedded Linux 2010
HSLINUX007 Embedded Linux core transplantation and development of handheld terminals system 2010
HSLINUX008 Remote video monitoring system based on embedded linux and GPS 2010
HSLINUX009 Design and implementation of embedded Web server based on arm and Linux 2010
HSLINUX010 Design and Implementation of Vehicle Wireless Data Transmission Based on MIPS-Linux 2010
HSLINUX011 Research and implementation of embedded graphic user interface based on Linux 2010
HSLINUX012 Design of embedded data acquisition and remote control system based on Linux 2010
HSLINUX013 Design of Trusted Operating System Based on Linux 2010
HSLINUX014 Automated Monitoring System of Pig Behavior Based on RFID and ARM-LINUX 2010
HSLINUX015 Performance assessment of a motion control application based on linux RTAI 2010
HSLINUX016 Design for Motion Detection System Based on Embedded Linux 2010
HSLINUX017 Embedded Linux platform several Slave communication 2010
HSLINUX018 Stepper Motor Drive of Stage Intelligent Light Based on Embedded 2010
HSLINUX019 Research on high-resolution camera drivers based on Windows CE 2010
HSLINUX020 Tradeoffs in implementing an embedded system designed for monitoring, controlling temperature & humidity 2010