Project Hub /Security Surveillance & Defense/Biometric Security (Fingerprint/Iris)/RFID Based Voting Machine

Intermediate

OTHER CONTROLLER

₹500 – ₹1,500

3 – 6 Hours

Partial Kit

RFID Based Voting Machine

This project implements an RFID-authenticated electronic voting machine using an ATmega32 AVR microcontroller and a 16x2 LCD display.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag Rs. 190.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: LCD (generic / unspecified)
ATmega / AVR chip
USB Host / Programmer (ISP/USBasp)
Capacitors

Browse all components

How It Works

The RFID-Based Voting Machine is an embedded system designed to authenticate voters and securely record their votes using an ATmega32 microcontroller. Power is supplied to the entire circuit via a stable 5V power supply, supported by 100uF and 100nF capacitors for filtering voltage fluctuations and noise. At the heart of the system is the ATmega32 microcontroller, which is programmed using an AVR-ISP programmer running software developed in Atmel Studio 6.1 and transferred via ProgISP or Flash Magic. When a voter approaches, an EM-18 RFID reader module scans an identification card or tag. The reader transmits this unique ID to the microcontroller. The ATmega32 processes the incoming data to verify the voter's identity and eligibility. Once authentication is successful, status indicators using LEDs provide visual feedback. The JHD_162A 16x2 LCD display interfaces with the microcontroller to prompt the voter and show system messages. The voter then casts their vote using a bank of five push buttons, each coupled with 10K resistors configured to ensure reliable digital inputs without floating states. The microcontroller tallies the votes in real time, securely updating the electronic count, and displays the status and results on the 16x2 LCD.

Why Build This

Develop a secure, automated electronic voting prototype suitable for university student elections or organizational balloting.

Gain practical experience integrating RFID identification modules with AVR microcontroller architecture for access control applications.

Design robust user interfaces combining alphanumeric LCD displays and tactile input buttons for embedded data collection systems.

Real-World Application

Secure electronic voting systems for colleges, organizations, or government elections to prevent unauthorized voting and automate vote counting.

Skills You'll Learn

Embedded C programming

RFID reader integration

LCD interfacing

digital input debouncing

microcontroller firmware flashing

serial communication

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

RFID

AVR

ATMEGA32

C PROGRAMMING

UART

RS232

LCD

EMBEDDED SYSTEMS

Frequently Asked Questions

How does the RFID reader communicate with the ATmega32 microcontroller?

The EM-18 RFID reader typically communicates via asynchronous serial communication (UART), sending the unique card ID string directly to the microcontroller's RX pin once a tag is scanned.

What is the purpose of the 10K resistors connected to the push buttons?

The 10K resistors act as pull-up or pull-down resistors to ensure that the input pins on the ATmega32 remain at a stable, defined logic level when the buttons are not pressed, preventing erratic floating states.

Can I use software other than ProgISP or Flash Magic to program the ATmega32?

Yes, as long as your chosen software supports your specific hardware AVR-ISP programmer and can correctly output the compiled HEX file generated in Atmel Studio 6.1 to the microcontroller.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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