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:
Project components
Circuit diagram / circuit connections
Source code
Instructions document
Project Types:
DIY KIT (Do It Yourself KIT) - Along with the components, you will get the source code, circuit diagram/circuit connections, and instructions document to help you build the project easily.
Ready-Made - We are providing a 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.