Arduino-Quiz- Buzzer Sytem

A quiz Buzzer System Based on Arduino-Atmega8

int x=1;
int y=0;
int buz=15;
void low()
{
  digitalWrite(3,LOW);
  digitalWrite(4,LOW);
  digitalWrite(5,LOW);
  digitalWrite(6,LOW);
  digitalWrite(7,LOW);
  digitalWrite(8,LOW);
}

void chk()
{

  if(digitalRead(9)&& x)
  {
    digitalWrite(3,HIGH);
    x=0;
    y=1;
    Serial.print(x);
    Serial.print("3");
  }
  else if(digitalRead(10)&& x)
  {
    digitalWrite(4,HIGH);
    x=0;
    y=1;
    Serial.println("4");
    Serial.print(x);

  }
  else if(digitalRead(11)&& x)
  {
    digitalWrite(5,HIGH);
    y=1;
    x=0;
    Serial.println("5");
  }
  else if(digitalRead(12)&& x)
  {
    digitalWrite(6,HIGH);

    x=0;
    y=1;
    Serial.println("6");
  }
  else if(digitalRead(13)&& x)
  {
    digitalWrite(7,HIGH);

    x=0;
    y=1;
    Serial.println("7");
  }
  else if(digitalRead(14)&& x)
  {
    digitalWrite(8,HIGH);

    x=0;
    y=1;
    Serial.println("8");
  }
}

////////////////////////////////////////////////////////////////////////////////////////////


void setup()
{
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(8,OUTPUT);
  Serial.begin(9600);
  Serial.println("Started");

  /////////////////////////////////////////////////////////////////////////////////

  pinMode(9,INPUT);
  pinMode(10,INPUT);
  pinMode(11,INPUT);
  pinMode(12,INPUT);
  pinMode(13,INPUT);
  pinMode(14,INPUT);

  ////////////////////////
low();
}

void loop()
{
  while(1)
  {
    chk();
    if(y)
    {
      digitalWrite(buz,HIGH);
      Serial.println("buzon");
      delay(3500);
      digitalWrite(buz,LOW);
      delay(5000);
      break;
    }

  }
  x=1;
  y=0;
  low();
}

Getting Started With The STM32F4DISCOVERY In Linux

Building an ARM toolchain

To compile code for the STM32F4DISCOVERY you’ll need an ARM toolchain that supports the Cortex-M3. I used the build script summon-arm-toolchain to build one. Before running the script you need to install several dependencies:


The Summon ARM toolchain is a shell script which will download the source of bintutils, gcc/gdb and two or three other packages (newlib, openocd andlibopencm3) and compiles them (after applying some patches) to get executables for a "bare-metal" arm toolchain; you only have to clone the "summon arm toolchain" git repo and run a script called "summon-arm-toolchain". The executables (arm-none-eabi-gcc and friends) will be installed in the folder ~/sat/bin.

IEEE Projects in Embedded System

1. Parking spaces detection in indoor environments based on Zigbee(IEEE Transaction 2012)


                     This paper describes the study about parking spaces detection in indoor environments, implementing a WSN (Wireless Sensor Network) based on Zigbee technology. Our study focuses on the analysis of the received power when a vehicle is parked or not, by monitoring the RSSI (Received Signal Strength Indicator) field defined in the MAC layer as the IEEE 802.15.4 describes. We focus in the analysis of three factors: data processing time, the influence of distancein received power and the attenuation effect in the signal when propagates, which determine the network topology to deploy and the validity of our location model.

Simple Arduino Project

Embedded System Projects 2012-13

1.AUTOMATION USING DIGITAL POWER LINE COMMUNICATION PROTOCOL
2.PROTECTION OF POWER TRANSFORMER USING MICROCONTROLLER-BASED RELAY
3.A FOREST FIRE MONITORING SYSTEM BASED ON GPRS AND ZIGBEE WIRELESS SENSOR NETWORKS

4.REMOTE POWER ON/OFF CONTROL AND CURRENT MEASUREMENT FOR HOME ELECTRIC OUTLETS BASED ON A LOW-POWER EMBEDDED BOARD AND ZIGBEE COMMUNICATION

5.DESIGN AND IMPLEMENTATION OF ZIGBEE BASED URC APPLICABLE TO LEGACY HOME APPLIANCES

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Temperature Monitoring System using 89V51

P89v51RD2 of NXP is having a inbuilt boot loader which makes the programming of p89v51rd2 very simple. For that connect EA pin to Vcc and PSEN Pin to ground. And use Flash Magic Software for downloading your hex file using a MAX232

In this design ADC808 is interfaced with micro controller 89v51 to read the Temperature from LM35 and displayed on an LCD Interfacing ADC808 <

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