SUBMITTED BY: DEEPAK KUMAR SINGH DUSHYANT SHARMA BHARDWAJ MOHIT SINGH YADAV INTRODUCTION BLOCK DIAGRAM BLOCK DIAGRAM EXPLANATION CIRCUIT DIAGRAM CIRCUIT WORKING CIRCUIT OPERATION To minimize errors in voting. . To save time. To make the voting easier. It will lead to increase in voting percentage. and easy and accurate counting without any mischief at the counting centre. resulting in fewer problems in electoral preparations. It completely rules out the chance of invalid votes.. candidates' expenditure etc. law and order. election scene was completely changed by electronic voting machine. store. longtime-consuming process and very much prone to errors. and maintain. Its use results eduction of polling time. a voter used to cast his vote by using ballot paper. . Cell phone based voting machine It is easy to transport. India is world’s largest democracy. If he has entered a valid choice & password his vote will be caste with two short duration beeps. User is allotted 15 seconds to enter his password & choice. The aim of our project is to design & develop a mobile based voting machine. Once the user is connected to the voting machine he can enter his password & choice of vote. For invalid password/choice long beep will be generated. In this project user can dial the specific number from any land line or mobile phone to cast his vote. A total key is provided to display the result . A reset button is provided for resetting the system. . LOW PASS FILTER: used to filter DTMF tone signal while cancelling various noise signal DTMF decoder: DTMF decoder is needed to convert Audio DTMF signal to BCD signal IC HT9170 is used for this purpose. . Thus it is mind of voting machine. Microcontroller: It is main control unit which control all input and output unit by executing program stored in the flash memory. number from which he is calling Security alarm: If some one tries to access voting machine more than once security alarm gets activated and user is traced on LCD. Voice processing and recoding circuit: It is used to record voice massage for the candidate Speaker and microphone: Microphone for recording massage and speaker for playing massage. .Switches: to calculate total number of vote to corresponding party LCD display: to display name of candidate. password of candidate. . The Project can be divided into 4 main parts as DTMF Transmitter DTMF Receiver voice processor Microcontroller . DTMF TRANSMITTER Mobile is based on DTMF Technology. When you send these DTMF signals to the telephone exchange through cables. When you press a button of mobile keypad. The resultant frequency signal is called "Dual Tone Multiple Frequency". the servers in the telephone exchange identifies these signals and makes the connection to the person you are calling. . a connection is made that generates a resultant signal of two tones at the same time. DTMF Receiver: Mobile work as a DTMF receiver and encoded hybrid frequency DTMF code tone is decoded by 8870 IC. output depending upon which key is pressed at the transmitter side . 8870 Decode DTMF tone and convert into BCD code. . PLAY .• FOUR pushbuttons: FORWARD ERASE RECORD . The microcontroller continuously scans input logic USER MODE: In user mode microcontroller is programmed to continuously scan portb input coming from mobile phone ADMIN MODE: In administrative mode microcontroller is programmed to continuously scan portd input coming from switches. By following LCD massage we can see total vote to corresponding party. .• • • Microcontroller Logic: The function of microcontroller is to control input output based on the programmed embedded hex logic. This mode is used for counting purpose. •…. PPPPPP PIC . . • • • PIC–Peripheral Interface Controller 16–Midrange series F–Flash memory • • 40-pin Operating frequency 0-20 MHZ • • • 8K ROM MEMORY IN FLASH TECHNOLOGY 256 BYTES EEPROM MEMORY 368 BYTES RAM MEMORY . 10 BIT A/D CONVERTOR 3 INDEPENDENT COUNTERS WATCH DOG TIMER PROGRAMMABLE CODE PROTECTION DIRECT.INDIRECT AND RELATIVE ADDRESSSIN MODE INERRUPT CAPABILITY . In case of successful voting one vote is added to given party and stored in EEPROM. Voting machine automatically receive the call and start voice processor to announce instruction. The microcontroller confirms that given voting number is using first time. . Then he has to enter voting card number. If is first time voice processor announce enter “PARTY CODE” for voting corresponding party. make a call to the voting machine phone number. After verification of correct party code voice processor announces “VOTING SUCCESSFUL” otherwise it announces error massage and activates output alarm.