Project idea
Build an embedded safety system that fuses alcohol sensing, impact/vibration, temperature/fire, tilt/rollover, GPS positioning, and GSM messaging to alert designated contacts in real time and store synchronized telemetry on an SD card for investigators.
Project description
An Arduino Mega reads MQ-3 alcohol levels, vibration (SW-420), temperature, gyroscope tilt, rain/water ingress, and motor speed to detect risky events, then sends SMS via SIM800L with live GPS coordinates and starts high-frequency logging to a microSD module for later retrieval. The system also flags overspeeding, fire, rollover, and drunk driving, logs event timelines, and demonstrates engine control using two DC motors and a trimpot-based speed limit threshold.
Total components list (names only)
Arduino Mega 2560 board
MQ-3 alcohol sensor module
SW-420 vibration sensor module
MPU-6050 gyro/accelerometer module
Temperature sensor (e.g., LM35/DS18B20)
Rain/water sensor module
16×2 LCD with I2C backpack
GPS module (u-blox NEO-6M)
GSM module (SIM800L)
MicroSD card SPI module
MicroSD card (≥8GB)
2× DC gear motors (demo engine)
Trimpot/potentiometer (e.g., 10k)
General-purpose PCB
Voltage regulator and regulator circuitry
Switches and pushbuttons
LEDs and indicators
Connectors and jumper wires
Resistors and capacitors
Cables and headers
Features
Instant SMS alerts with GPS link for drunk driving, fire, impact, rollover, and overspeed events using SIM800L and NEO-6M modules.
Continuous blackbox logging to microSD (sensor snapshots per second) for post-crash analysis and exact incident reconstruction.
Modular, serviceable hardware using Arduino Mega, off-the-shelf sensor modules, and standard connectors for rapid prototyping and field replacement.
Applications
Vehicle safety and telematics add‑ons for student projects, fleet demos, and lab prototypes showing event-triggered alerts and data logging.
Forensic accident analysis training tools demonstrating synchronized sensor timelines and geotagged event trails on removable storage.
Drunk‑driving detection demos with real-time notifications and repeatable test scenarios on benchtop or test rigs.
Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code
(For DIY KITs - only the components will be provided)
Project Types:
- DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
- DIY KIT with Code & Circuit Connections - Along with the components, you will get the Code and the Circuit Connections file to help you build the project easily.
- Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
- Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Dimensions (cm)
Approximate assembled unit: 18 × 12 × 6 cm for a compact enclosure with Mega, modules, wiring, and LCD front panel.
Shipping dimensions (cm)
Packed kit with padding and accessories: 25 × 18 × 10 cm suitable for standard Indian courier services.
Weight
Approximate packed weight: 0.6–0.8 kg depending on enclosure, wiring, and motor selection.
Estimate project weight
Assembled prototype (without outer carton): ~0.45–0.55 kg, driven by PCB, Mega, modules, LCD, and two small DC motors.
Notes: All the products are made by LearnElectronics India and not for re-sale.
