ARDUINO SERIAL COMMUNICATION 
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ULTRASONIC RANGE FINDER USING ARDUINO

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Ultrasonic distance measurement  using HC-SR04 sensor The project using to measure distance from  the HC-SR04 Ultrasonic sensor  PARTS NEEDED   Arduino uno LCD 16x2 HC-SR04 Ultrasonic sensor  Bread board  jumper wires and a computer only for programming  CONNECTING OF LCD TO THE ARDUINO  * LCD RS pin to digital pin 12  * LCD Enable pin to digital pin 11  * LCD D4 pin to digital pin 5  * LCD D5 pin to digital pin 4  * LCD D6 pin to digital pin 3  * LCD D7 pin to digital pin 2  * LCD R/W pin to ground  * ends to +5V and ground(A,K) for the lcd backlight   * wiper to LCD VO pin (pin 3) or connect the lcd 3rd pin to ground through 1K  resistor  CONNECTING OF HC-SR04 TO ARDUINO  *VCC to +5v *GND to ground  *trigpin to digital pin 9 *echopin to digial pin 10 THE PROGRAM CODE /...
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" Temparature monitor " using arduino. This can be used to measure your room temparature in two units.... PARTS NEEDED Arduino uno LCD 2x16 Lm35 Jumber wires Optional power supply 9v Bread board Potentiometer 10k Circuit diagram Lcd connecting instructions * LCD RS pin to digital pin 12  * LCD Enable pin to digital pin 11  * LCD D4 pin to digital pin 5  * LCD D5 pin to digital pin 4  * LCD D6 pin to digital pin 3  * LCD D7 pin to digital pin * LCD R/W pin to ground  * 10K resistor:  * ends to +5V and ground  * wiper to LCD VO pin (pin 3) LCD pinouts The program code  //temparature sensor using lm35 and lcd 2*16 //www.appuneurons.blogspot.com #include<LiquidCrystal.h> LiquidCrystal lcd(12, 11, 5, 4, 3, 2); const int sensor=A1; // Assigning analog pin A1 to variable 'sensor' float tempc; //variable to store temperature in degree Celsius floa...
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Voice controled home automation using Arduino over Bluetooth

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REQUIRED PARTS   Arduino uno jumpers LCD 16x2  HC-05 Bluetooth module Relay Breadboard  Bulb Holder The circuit /* The circuit:  * LCD RS pin to digital pin 12  * LCD Enable pin to digital pin 11  * LCD D4 pin to digital pin 10  * LCD D5 pin to digital pin 9  * LCD D6 pin to digital pin 8  * LCD D7 pin to digital pin 7  * LCD R/W pin to ground  * LCD VSS pin to ground  * LCD VCC pin to 5V  * 10K resistor:  * ends to +5V and ground  * wiper to LCD VO pin (pin 7) *green light digital pin 4 *blue light digital pin 3 *red light digital pin 2 *bulb/ light digital pin 5 *fan digital pin 6 */ program code #include<SoftwareSerial.h> #include<LiquidCrystal.h> SoftwareSerial bluetooth(0,1); LiquidCrystal lcd(12, 11, 10, 9, 8, 7); short int red = 2,blue = 3,green = 4,light = 5, fan = 6; String command; void setup(){ ...
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