E&TC / ECE · GSM and GPS · Final year project
Wireless Black Box for Cars using Sensors & GPS Module
A car black box that records data and alerts contacts after an accident. It logs temperature, humidity and location to an SD card and sends an SMS with GPS location to police, hospitals and family.
What is the Wireless Black Box for Cars using Sensors & GPS Module project?
A car black box that records data and alerts contacts after an accident. It logs temperature, humidity and location to an SD card and sends an SMS with GPS location to police, hospitals and family.
Key facts
- Branch
- Electronics & Telecommunication (E&TC / ECE); also suits Instrumentation
- Domain
- GSM and GPS projects
- Type
- Final year project · Advanced
- Suitable for
- Diploma capstone and B.E / B.Tech final year
- Build time
- 6 to 8 weeks
- Estimated component cost
- ₹3,700 – ₹5,400
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Wireless Black Box for Cars using Sensors & GPS Module works
- 12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The Temperature sensor measures the temperature that the system monitors or controls.
- The PIC16F877A microcontroller with board handles the control logic, ADC readings and output switching.
- The GSM module sends SMS alerts or makes calls to the registered phone number using a normal SIM card.
- The GPS module receives satellite signals and gives the latitude and longitude of the device.
- The LEDs indicate status.
Block diagram
Inputs
Temperature sensorController
PIC16F877A microcontroller with boardArduino Uno R3Communication
GSM moduleGPS moduleOutputs
LEDsComponents list and cost
Typical prices from Indian online stores and electronics markets (Lamington Road, Budhwar Peth, SP Road). Buy from one store where you can to save on shipping.
| Component | Qty | What it does | Approx. cost |
|---|---|---|---|
| PIC16F877A microcontroller with board | 1 | Handles the control logic, ADC readings and output switching. | ₹380 |
| Arduino Uno R3 | 1 | Reads the inputs, runs the decision logic written in C/C++ and drives the outputs. | ₹550 |
| Temperature sensor (LM35 / DS18B20) | 1 | Measures the temperature that the system monitors or controls. | ₹90 |
| GSM module (SIM800L) | 1 | Sends SMS alerts or makes calls to the registered phone number using a normal SIM card. | ₹450 |
| GPS module (NEO-6M) | 1 | Receives satellite signals and gives the latitude and longitude of the device. | ₹650 |
| LEDs (assorted) | 1 | Indicate status. | ₹20 |
| 12 V power adapter / step-down transformer | 1 | Supplies stable low-voltage power from the mains. | ₹250 |
| Wheels / castor wheels | 1 | Allow the machine or vehicle to move. | ₹400 |
| Passive components, PCB and wiring kit | 1 | Resistors (assorted), capacitors (assorted), PCB / breadboard and cables, connectors and jumper wires. | ₹310 |
| Wiring, PCB, soldering and enclosure | 1 | Project overhead | ₹450 |
| Demo model base / mounting board | 1 | Project overhead | ₹500 |
| Testing spares and replacements | 1 | Project overhead | ₹300 |
| Estimated total | Varies with brand, quality and city | ₹3,700 – ₹5,400 |
Prices are estimates for budgeting. We confirm the bill of materials when your design is frozen, and components are charged at actual cost with bills.
How much does this project cost?
| Option | What you get | Cost |
|---|---|---|
| Components only | You buy the parts and build it yourself | ₹3,700 – ₹5,400 |
| Hardware / IoT Final Year | Working model or guided build, Circuit diagram and bill of materials, Firmware / code with explanation | from ₹9,999 + components |
| Capstone Project (CPE) | Working project or model, Black book in MSBTE format, Step-by-step explanation | ₹9,999 + components |
| Diploma ITR | 100% working source code, Project report PDF, PPT | ₹1,999 + components |
No GST and no hidden charges. Use the cost calculator for a quote with your deadline and add-ons, or see all plans.
Download the project brief (PDF)
Summary, working, components and cost and viva questions on one branded PDF to show your guide or team. To get it developed, contact us on WhatsApp.
What you submit with this project
- Working model with circuit diagram and program code
- Project report or black book in your university's chapter order (block diagram, circuit, calculations, results)
- Presentation for the review and final viva
- Synopsis for topic approval, if your college asks for one
E&TC / ECE viva questions on this project
What is the aim of the Wireless Black Box for Cars using Sensors & GPS Module project?
A car black box that records data and alerts contacts after an accident. It logs temperature, humidity and location to an SD card and sends an SMS with GPS location to police, hospitals and family.
Explain the working of your project in short.
12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V. The Temperature sensor measures the temperature that the system monitors or controls. The PIC16F877A microcontroller with board handles the control logic, ADC readings and output switching. The GSM module sends SMS alerts or makes calls to the registered phone number using a normal SIM card.
What are the features of the PIC16F877A?
It is an 8-bit RISC microcontroller with 8 KB flash, 368 bytes RAM, 33 I/O pins, an 8-channel 10-bit ADC, two PWM modules, USART, SPI and I2C.
What microcontroller is on the Arduino Uno and what are its key specifications?
The Uno uses the ATmega328P: 8-bit, 16 MHz clock, 32 KB flash, 2 KB SRAM, 14 digital I/O pins (6 PWM) and 6 analog inputs with a 10-bit ADC.
How does the LM35 temperature sensor work?
LM35 gives an analog output of 10 mV per °C, so 250 mV means 25 °C. The controller reads it with the ADC and converts the value to degrees.
How does the GSM module send an SMS?
The microcontroller sends AT commands over serial, for example AT+CMGF=1 to select text mode and AT+CMGS with the phone number followed by the message. The module transmits it over the mobile network.
How does a GPS module find its location?
It receives timing signals from at least four satellites, calculates the distance to each from the signal delay and solves for its position. The module outputs NMEA sentences like $GPGGA with latitude, longitude and time.
Explain the block diagram of your project.
The input section senses the real-world quantity, the PIC16F877A microcontroller with board processes it according to the program, and the output section acts locally and sends the data or alert wirelessly. The power supply section feeds every block.
Which communication protocols are used between the modules?
UART (serial) for the GSM, GPS, Bluetooth or fingerprint modules, a single-wire digital protocol for the temperature sensor and analog inputs read by the ADC for the analog sensors. Each protocol was chosen because the module supports it and it uses the fewest pins.
What is the operating voltage of the circuit?
The controller and most sensors work at 5 V (ESP boards and some modules at 3.3 V). A 12 V adapter powers the board, and a regulator steps it down. Motors and relays get their own supply line so they do not reset the controller.
What is the difference between accuracy and precision?
Accuracy is how close a reading is to the true value. Precision is how close repeated readings are to each other. A sensor can be precise but inaccurate if it is not calibrated.
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