Project Hub /Basic Analog & Power Electronics/Power Supplies & Voltage Regulators/Arduino based Driver Drowsiness Detection & Alerting System

Intermediate

ARDUINO

Project Specific

3 – 6 Hours

Partial Kit

Arduino based Driver Drowsiness Detection & Alerting System

An Arduino-based driver drowsiness detection and alerting system that tracks eye blinks using an IR sensor and wireless RF transmission to trigger a loud buzzer warning if the driver falls asleep.

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.

Arduino Nano C Type V3 ATMEGA328 with Soldered Headers Rs. 608.00
Piezo Buzzer (Big) 6-12V Rs. 45.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
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

We don't carry yet: Microcontroller IC (DIP) / Chip
9V Battery + Snap
Voltage Regulator IC (7805 / LM317 / 1117)
Eyeblink Sensor
RF Transceiver Module
HD12E

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How It Works

The Arduino-based Driver Drowsiness Detection & Alerting System functions by continuously monitoring a driver's blink patterns to identify signs of fatigue. At the heart of the setup is an Arduino Nano, powered safely via a 12V DC power supply and a 7805 voltage regulator that steps down the voltage to a steady 5V required by the digital logic. An eyeblink sensor, typically utilizing infrared technology, tracks the driver's eye movements. When the sensor detects prolonged eye closure indicative of drowsiness, it sends a signal to the Arduino Nano. To allow remote or decentralized alerting, the system uses an RF transmitter paired with an HD12E encoder IC on the sensing side, and an RF receiver paired with an HD12D decoder IC on the alerting side. When the Arduino identifies a drowsy state, data is encoded and transmitted wirelessly through the RF transceiver modules. Upon receiving the signal, the decoder IC verifies the transmission, prompting the Arduino to activate a buzzer. Powered independently by a 9V battery, the buzzer sounds a loud warning to immediately alert the driver and prevent accidents.

Why Build This

Gain hands-on experience combining microcontrollers with wireless RF communication modules for remote triggering.

Understand how analog sensors like eyeblink detectors interface with digital processing boards like the Arduino Nano.

Build a practical automotive safety prototype that addresses real-world fatigue-related road accidents.

Real-World Application

Automotive safety systems to prevent fatigue-related road accidents by warning drowsy drivers in real-time.

Skills You'll Learn

Microcontroller programming

IR sensor interfacing

wireless RF data transmission

encoder and decoder logic

voltage regulation

buzzer actuation control

Safety Precautions

Ensure proper wiring of power supplies to avoid short circuits. Do not rely solely on prototype safety systems for actual driving safety.

Technology Tags

ARDUINO

EYE BLINK SENSOR

RF TRANSCEIVER

WIRELESS

BUZZER

SAFETY

INFRARED

Frequently Asked Questions

What is the purpose of the 7805 voltage regulator in this circuit?

The 7805 voltage regulator steps down the incoming 12V DC power supply to a stable 5V, protecting sensitive components like the Arduino Nano and ICs from overvoltage.

Why are the HD12E and HD12D ICs used alongside the RF transceiver modules?

The HD12E (encoder) and HD12D (decoder) ICs are used to securely encode and decode the wireless signals sent between the RF modules, ensuring reliable communication without interference.

Can I power the entire circuit using just the 9V battery?

The 9V battery is specifically intended to power the alerting buzzer independently, while the main system relies on the regulated 12V DC power supply for steady, long-term operation.

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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