Mechanical · Agricultural machine · Final year project
Design and Manufacturing of Solar Powered Seed Sprayer Machine
A solar-powered machine that sows seeds evenly in the field. A solar panel charges the battery, and a motor-driven metering mechanism drops or sprays seeds at regular spacing as the machine moves, reducing time and labour.
What is the Design and Manufacturing of Solar Powered Seed Sprayer Machine project?
A solar-powered machine that sows seeds evenly in the field. A solar panel charges the battery, and a motor-driven metering mechanism drops or sprays seeds at regular spacing as the machine moves, reducing time and labour.
Key facts
- Branch
- Mechanical & Automobile Engineering; also suits Mechatronics
- 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
- ₹8,400 – ₹12,300
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Design and Manufacturing of Solar Powered Seed Sprayer Machine works
- The mild steel frame and fabrication forms the base that carries every other part, so it is designed first from the load and size of the machine.
- The DC geared motor provides the driving motion.
- The Servo motor rotates to an exact angle, used for locks, arms and flaps.
- Motion is transmitted through DC geared motor, which set the speed, torque and direction at the working end.
- The Wheels / castor wheels allow the machine or vehicle to move.
- The DC cooling fan moves air for cooling or ventilation.
Block diagram
Power
DC geared motorDC cooling fanServo motorTransmission
DC geared motorWorking unit
Wheels / castor wheelsStructure
Frame and mountsComponents 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 |
|---|---|---|---|
| DC geared motor | 1 | Provides the driving motion. | ₹250 |
| DC cooling fan (12 V) | 1 | Moves air for cooling or ventilation. | ₹120 |
| Servo motor (MG996R / SG90) | 1 | Rotates to an exact angle, used for locks, arms and flaps. | ₹350 |
| Solar panel (10–20 W) | 1 | Converts sunlight into electricity to power or charge the system. | ₹900 |
| Rechargeable battery (12 V 1.3–7 Ah) | 1 | Stores energy and supplies power when mains is absent. | ₹650 |
| Charge controller module | 1 | Charges the battery safely and stops overcharging. | ₹250 |
| Mild steel frame and fabrication | 1 | Forms the main structure that holds all parts. | ₹2,500 |
| Wheels / castor wheels | 1 | Allow the machine or vehicle to move. | ₹400 |
| Welding, cutting and machining labour | 1 | Needed for this type of build. | ₹2,200 |
| Hopper | 1 | Part from the design specification | ₹400* |
| Controller Circuitry | 1 | Part from the design specification | ₹400* |
| Mounts, screws, nuts and small hardware | 1 | Cables, connectors and jumper wires and enclosure, mounts and fasteners. | ₹420 |
| Paint, finishing and workshop consumables | 1 | Project overhead | ₹600 |
| Transport of material | 1 | Project overhead | ₹400 |
| Estimated total | Varies with brand, quality and city | ₹8,400 – ₹12,300 |
Prices are estimates for budgeting; items marked * depend on the exact size or model chosen. 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 | ₹8,400 – ₹12,300 |
| 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
Mechanical viva questions on this project
What is the aim of the Design and Manufacturing of Solar Powered Seed Sprayer Machine project?
A solar-powered machine that sows seeds evenly in the field. A solar panel charges the battery, and a motor-driven metering mechanism drops or sprays seeds at regular spacing as the machine moves, reducing time and labour.
Explain the working of your project in short.
The mild steel frame and fabrication forms the base that carries every other part, so it is designed first from the load and size of the machine. The DC geared motor provides the driving motion. The Servo motor rotates to an exact angle, used for locks, arms and flaps. Motion is transmitted through DC geared motor, which set the speed, torque and direction at the working end.
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 can fan speed be varied?
With PWM through a MOSFET: changing the duty cycle changes the average voltage and therefore the speed.
How is a servo motor controlled?
With a PWM signal at 50 Hz. A pulse of 1 ms gives about 0°, 1.5 ms gives 90° and 2 ms gives 180°. The internal feedback potentiometer holds the angle.
What is the efficiency of a typical solar panel?
Commercial polycrystalline panels convert about 15–17% and monocrystalline about 18–22% of sunlight into electricity. Output depends on sunlight, angle and temperature.
How do you calculate battery backup time?
Backup time (hours) ≈ battery capacity (Ah) × voltage × 0.8 efficiency ÷ load power (W). For example, 12 V 7 Ah at 20 W gives about 3.3 hours.
Which material did you select for the main parts and why?
Mild steel (MS) is used for the frame because it is strong, cheap, easy to cut and weld and available everywhere. Shafts are made of EN8 or bright mild steel for strength, and parts that do not carry load can be aluminium or acrylic to reduce weight.
What factor of safety did you take in your design?
A factor of safety of 2 to 3 is taken for static parts and 3 to 5 for parts under shock or fatigue loading. Allowable stress = yield strength ÷ factor of safety, and each part is checked against it.
How did you estimate the cost of the project?
The cost is the sum of raw material, bought-out parts, machining or fabrication and overheads. Our estimate for this model is about ₹8,400 to ₹12,300, depending on size, material and the workshop rates in your city.
Which manufacturing processes were used?
Cutting and grinding of sections, arc or MIG welding of the frame, drilling for mounting holes, turning of the shafts and fitting of bearings and the drive, followed by assembly, alignment and painting.
Is your system open-loop or closed-loop?
Mainly open-loop: the controller runs the actuators for a set time or number of steps. Adding a sensor for feedback would make it closed-loop and more accurate.
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 Design and Manufacturing of Solar Powered Seed Sprayer Machine?
Send your college, deadline and team size. We confirm the scope, cost and what you will submit.