Analog MQ-3 Alcohol Sensor Interface with AVR ATmega16 Micro-controller and LED display. Here, we will interface an MQ-3 analog alcohol sensor with ATmega16 micro-controller and we will show the value of the MQ-3 analog alcohol sensor in the 1X8 LED array.

Since the output of the MQ-3 Alcohol analog sensor is analog in nature and these analog signals can not be processed directly by the ATmega16 micro-controller. Thus, in the first place this signal needs to be converted to digital value to be processed by the micro-controller. The conversio ....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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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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how to interface an alcoholic sensor to an 8051 microcontroller ....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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interfacing of humidity sensor with 8051 microcontroller pdf

Abstract

This project is about a simple humidity sensor based on 8051 microcontroller. Humidity sensor is also called hygrometer. This circuit can sense relative humidity (RH) from 20% to 95% at an accuracy of 5%. The humidity information is displayed on a 16 2 LCD display. A relay is also provided which is set to be active when the humidity crosses a certain trip point. The circuit is mains operated and it is very easy to install. DHT11 is the humidity sensor used here.DHT11 is a ....etc

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how can i interconnect an alcohol sensor to the arduino circult and to the car ignition system

how can i interconnect an alcohol sensor , an arduino and the ignition system in an alco hol detection system


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how can i interconnect an alcohol sensor , an arduino and the ignition system in an alco hol detection system ....etc

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

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//LCD Module Connections
sbit RS = P0^0;
sbit EN = P0^1;
sbit D0 = P2^0;
sbit D1 = P2^1;
sbit D2 = P2^2;
sbit D3 = P2^3;
sbit D4 = P2^4;
sbit D5 = P2^5;
sbit D6 = P2^6;
sbit D7 = P2^7;
//End LCD Module Connections

//Keypad Connections
sbit R1 = P1^0;
sbit R2 = P1^1;
sbit R3 = P1^2;
sbit R4 = P1^3;
sbit C1 = P1^4;
sbit C2 = P1^5;
sbit C3 = P1^6;
sbit C4 = P1^7;
//End Keypad Connections

void Delay(int a)
{
int j;
int i;
for(i=0;i {
for(j=0;j<100;j++)
{
}
}
}

char Read_Keypad()
{
C1 ....etc

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