i need a documentation for this ultrasonic distance measuring system with hrso4 sensor and at89s52 micro controller ....etc

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pls ,tell us the c coding for interfacing pir sensor with microcontroller at89c51 ....etc

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hello sir,
iam doing an project on pir sensor to turn on automatically light,for this purpose can u please help me out interfacing pir sensor with 8051 and its embeeded c code ....etc

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This is a simple-to-use liquefied petroleum gas (LPG) sensor, suitable for sensing LPG concentrations in the air. The MQ-6 can detect gas concentrations anywhere from 200 to 10000ppm.

This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board .This c ....etc

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code for interfacing pir sensor with 8051 mcu

Interfacing PIR sensor to 8051 microcontroller.
PIR sensors are widely used in motion detecting devices. This article is about interfacing a PIR sensor to 8051 microcontroller. A practical intruder alarm system using PIR sensor and 8051 microcontroller is also included at the end of this article. Before going in to the core of the article, let s have a look at the PIR sensor and its working.

PIR sensor.

PIR sensor is the abbreviation of Passive Infrared Sensor. It measures the amount of infrared ....etc

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To get full information or details of ultrasonic sensor hc sr04 with 8051 please have a look on the pages

http://edutwint-ultrasonic-sensor-based-dc-motor-control-using-labview

if you again feel trouble on ultrasonic sensor hc sr04 with 8051 please reply in that page and ask specific fields in ultrasonic sensor hc sr04 with 8051 ....etc

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microcontroller 8051 in car parking with ultrasonic sensor

Ultrasonic range finder using 8051 .
A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to 2.5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module HC-SR04 forms the basis of this circuit. The ultrasonic module sends a signal to the object, then picks up its echo and outputs a wave form whose time period is proportional to the distance. The microc ....etc

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HI I WOULD LIKE TO KNOW HOW TO INTERFACE ULTRASONIC SENSOR WITH LPC2148 ....etc

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interfacing of ultrasonic sensor to 89c51 with keil codes

#include

#include
// for using _nop_() function
#define port P2
#define dataport P0
sfr16 DPTR =0x82;
sbit trig=P3^5;
sbit rs=port^0;
sbit rw=port^1;
sbit e=port^2;


void delay(unsigned int msec)
{
int i,j;
for(i=0;i for(j=0;j<1275;j++);
}

void lcd_cmd(unsigned char item) // Function to send command to LCD
{
dataport = item;
rs= 0;
rw=0;
e=1;
delay(1);
e=0;
return;
}

void lcd_data(unsigned char item) // Function to send data to LCD
{
dataport = ....etc

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ultrasonic sensor interfacing with lpc2148

ARM7 LPC2148 Primer Board The ARM7 LPC2148 Primer board is specifically designed to help students to master the required skills in the area of embedded systems. The kit is designed in such way that all the possible features of the microcontroller will be easily used by the students. The kit supports in system programming (ISP) which is done through serial port. NXP s ARM7 (LPC2148), ARM Primer Kit is proposed to smooth the progress of developing and debugging of various designs encompassing of High s ....etc

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