E&TC / ECE · Robotics and drone · Final year project
Automatic Pneumatic Operated Coconut Dehusking Machine
A pneumatic machine that removes the thick fibrous husk from coconuts without skilled labour. The coconut is clamped in a pneumatic holder and a set of pneumatic cylinders drives a splitting tool into the husk and tears it away, controlled by a hand lever and sequencing valve.
What is the Automatic Pneumatic Operated Coconut Dehusking Machine project?
A pneumatic machine that removes the thick fibrous husk from coconuts without skilled labour. The coconut is clamped in a pneumatic holder and a set of pneumatic cylinders drives a splitting tool into the husk and tears it away, controlled by a hand lever and sequencing valve.
Key facts
- 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
- ₹10,800 – ₹15,900
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Automatic Pneumatic Operated Coconut Dehusking Machine works
- 12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs.
- The Solenoid lock locks or unlocks the door when energised.
- The LEDs indicate status.
Block diagram
Controller
Arduino Uno R3Outputs
Solenoid lockLEDsComponents 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 |
| Solenoid lock (12 V) | 1 | Locks or unlocks the door when energised. | ₹450 |
| LEDs (assorted) | 1 | Indicate status. | ₹20 |
| 12 V power adapter / step-down transformer | 1 | Supplies stable low-voltage power from the mains. | ₹250 |
| Hydraulic jack / cylinder | 1 | Gives large force from a small input using fluid pressure. | ₹1,500 |
| Pneumatic cylinder | 1 | Converts compressed air into linear push-pull motion. | ₹1,800 |
| Valves (solenoid / direction control) | 1 | Control the direction and flow of air or fluid. | ₹900 |
| FRL unit (filter-regulator-lubricator) | 1 | Needed for this type of build. | ₹1,500 |
| PU pipes and push-in fittings | 1 | Needed for this type of build. | ₹700 |
| Air compressor (small) | 1 | Supplies compressed air. | ₹3,500 |
| 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 | ₹10,800 – ₹15,900 |
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 | ₹10,800 – ₹15,900 |
| 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 Automatic Pneumatic Operated Coconut Dehusking Machine project?
A pneumatic machine that removes the thick fibrous husk from coconuts without skilled labour. The coconut is clamped in a pneumatic holder and a set of pneumatic cylinders drives a splitting tool into the husk and tears it away, controlled by a hand lever and sequencing valve.
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 Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs. The Solenoid lock locks or unlocks the door when energised. The LEDs indicate status.
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 a solenoid lock work?
When current flows, the coil becomes an electromagnet and pulls the plunger in, releasing the latch. When current stops, the spring pushes the plunger back to lock.
Why is a resistor connected in series with an LED?
It limits the current to a safe value (about 10–20 mA). Without it, the LED would draw too much current and burn out. R = (supply voltage − LED voltage) ÷ current.
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.
What is Pascal's law?
Pressure applied to a confined fluid is transmitted equally in all directions. A small force on a small piston creates a large force on a larger piston.
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?
The sensors give digital or analog signals read directly by the controller's I/O and ADC pins, and outputs are driven through transistor or relay drivers.
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.
Related projects
Academic use: Project Buddyy offers mentoring, guidance and reference material for learning. You stay responsible for following your institution's academic integrity rules and for understanding everything you submit.
Want to build Automatic Pneumatic Operated Coconut Dehusking Machine?
Send your college, deadline and team size. We confirm the scope, cost and what you will submit.