E&TC / ECE · Embedded and digital electronics · Final year project
Rain Sensing Motorized Umbrella Bag Mounted
A backpack with a built-in umbrella that opens automatically when it rains. A rain sensor and Arduino drive a motor to open the transparent cover, leaving the user's hands free.
What is the Rain Sensing Motorized Umbrella Bag Mounted project?
A backpack with a built-in umbrella that opens automatically when it rains. A rain sensor and Arduino drive a motor to open the transparent cover, leaving the user's hands free.
Key facts
- Branch
- Electronics & Telecommunication (E&TC / ECE); also suits Electrical, Mechatronics, Instrumentation
- Type
- Final year project · Beginner to intermediate
- Suitable for
- Diploma capstone and B.E / B.Tech final year
- Build time
- 3 to 4 weeks
- Estimated component cost
- ₹2,300 – ₹3,400
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Rain Sensing Motorized Umbrella Bag Mounted works
- 12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The Water / rain level sensor detects the presence or level of water.
- The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs.
- The DC geared motor provides the driving motion.
Block diagram
Inputs
Water / rain level sensorController
Arduino Uno R3Outputs
DC geared motorComponents 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 |
|---|---|---|---|
| Arduino Uno R3 | 1 | Reads the inputs, runs the decision logic written in C/C++ and drives the outputs. | ₹550 |
| Water / rain level sensor | 1 | Detects the presence or level of water. | ₹70 |
| DC geared motor | 1 | Provides the driving motion. | ₹250 |
| 12 V power adapter / step-down transformer | 1 | Supplies stable low-voltage power from the mains. | ₹250 |
| 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 | ₹2,300 – ₹3,400 |
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 | ₹2,300 – ₹3,400 |
| 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 Rain Sensing Motorized Umbrella Bag Mounted project?
A backpack with a built-in umbrella that opens automatically when it rains. A rain sensor and Arduino drive a motor to open the transparent cover, leaving the user's hands free.
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 Water / rain level sensor detects the presence or level of water. The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs. The DC geared motor provides the driving motion.
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 is water detected by this sensor?
The exposed conductive tracks are open circuit when dry. Water bridges them and lowers the resistance, and the controller reads the change as a level or as rain.
Why is a geared motor used?
The gearbox reduces speed and multiplies torque, so a small DC motor can move a vehicle or mechanism smoothly. Torque increases roughly by the gear ratio.
How is 230 V AC converted to 5 V DC for the circuit?
A transformer steps down the voltage, a bridge rectifier converts AC to pulsating DC, a capacitor smooths it and a 7805 regulator gives a steady 5 V.
Explain the block diagram of your project.
The input section senses the real-world quantity, the Arduino Uno R3 processes it according to the program, and the output section displays the result and drives the actuators. The power supply section feeds every block.
Which communication protocols are used between the modules?
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.
How did you calculate the power rating of your system?
Using P = V × I for each load, adding a margin of 20 to 25%.
Is your system open-loop or closed-loop?
Closed-loop: sensors measure the actual position, distance or condition and the controller corrects the actuators until the target is reached.
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