arduino sonar system

                     Arduino sonar system 

in this project we need ultrasonic sensor 

and processing software for processing 

the processing software link is here
http://playground.arduino.cc/Interfacing/Processing
firs you must connect the arduino board to computer and upload the arduino code after you must open the processing software  and upload the processing code and run 

you must choose the serial port from processing code 


the processing code is here 

arduino ultrasonic sensor project

       Arduino ultrasonic sensor project 

the circuit is follow

in this project we program for when the distance <100cm the led is on 

and else led is off 

in this project we need 

• arduino board
• ultrasonic sensor
• led 

in this project the distance can show on the serial monitor 

the code is follow