The main aim of the project is to design a traffic signal controlling through android smart phone that is allowed only for ambulance drivers. Bluetooth is an open standard specification for a radio frequency (RF)-based, short-range connectivity technology that promises to change the face of computing and wireless communication. It is designed to be an inexpensive, wireless networking system for all classes of portable devices, such as laptops, PDAs (personal digital assistants), and mobile phones. It also will enable wireless connections for desktop computers, making connections between monitors, printers, keyboards, and the CPU cable-free. The aim of this project is to build a traffic control system using Android smart phone operation over wireless. The program running inside microcontroller is going to control the whole system. Whenever driver finds more traffic in the moving route, he will send message to the Bluetooth module which is connected to micro controller with android mobile that will be given to the microcontroller which changes the traffic signal according to the message from RED to GREEN by running embedded programming.             This project uses regulated 5v, 500mA power supply. 7805, a three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of 230/12 step down transformer.      

The major building blocks of this project are:

1. Regulated Power Supply.
2. PIC Microcontroller.
3. Bluetooth module
4. Crystal Osillator.
5. Reset Button.
6. LED Indicators
7. Traffic Lights.

                       

Software’s used:    

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

   

Regulated Power Supply:

               

Block Diagram:              

video: