As of early 2025, over 29,500 drones are registered in India, with agriculture emerging as one of their fastest-growing use cases.

From spraying pesticides to scanning field health, drones are now critical tools in Indian farming. But behind every smooth operation is a set of complex components working in sync, many of which directly impact efficiency, coverage, and cost.

This blog breaks down the full anatomy of a drone. If you book spraying services through Leher or manage your drone, understanding how each part works helps you spray more effectively, troubleshoot faster, and grow more efficiently.

Why Should You Know Your Drone Inside Out?

A spraying drone is your partner in the field. Understanding its components helps you work smarter and avoid costly mistakes.

Here’s why this matters:

• Avoid Downtime: Spot early signs of wear to prevent breakdowns.

• Buy Better: Choose the right drone for your crop and land.

• Spray Smarter: Fine-tune nozzles, pumps, and flight settings for optimal performance.

• Stay Safe: Know limits and fail-safe features before takeoff.

• Troubleshoot Fast: Solve problems quickly even in remote areas.

What Are the Main Components That Make Up a Drone?

Before you start spraying crops or offering drone services, it’s essential to know what’s under the hood. A drone is a system of interconnected parts working together to complete complex tasks with precision.

Understanding the core hardware can help you quickly resolve small issues, improve flight efficiency, and use your equipment with greater confidence.

Drone Component Overview:

Here’s a breakdown of the essential components that make up a typical drone:

1. Frame: The Backbone of the Drone

The frame connects and supports every critical drone part, from the tank to the propellers. In agri-drones, it must be strong enough to carry payloads but light enough to fly efficiently.

• Made from carbon fibre, which resists heat, vibration, and daily field use better than plastic or aluminium.

• Affects spray capacity, stability, and how many acres can be covered in a day.

• Leher’s foldable frame design makes it easy to transport between farms without needing to be disassembled.

A strong, field-ready frame is what keeps your operations running smoothly with fewer repairs and more uptime.

2. Propellers: The Wings That Lift the Drone

Propellers generate the lift and thrust needed for takeoff, movement, and stable spraying. For agricultural drones, flight stability has a direct impact on spray quality.

• Most agri-drones use 4 or 6 propellers, arranged to balance lift and prevent drifting during low-altitude operations.

• Durable materials like plastic or carbon fibre help withstand heat, residue, and minor collisions.

• Propeller size is matched to payload with larger blades for heavier tanks and broader field coverage.

Before every spray job, checking your propellers ensures safer flights and accurate application.

3. Brushless Motors: The Power Behind Every Lift-Off

Motors drive every flight. In spraying drones, they must support heavy tanks while keeping the drone stable and energy-efficient.

• Brushless motors reduce friction and heat, improving flight time and reliability.

• They provide strong torque to lift heavy payloads without strain.

• Each motor adjusts independently, enabling smooth turns and even spraying.

For agri-drones, strong motors mean fewer breakdowns and better performance across all field conditions.

Also Read: How to Obtain a Drone Flying License in India?

4. Electronic Speed Controllers (ESCs)

ESCs control how fast each motor spins, helping the drone respond quickly and fly smoothly.

• Adjust motor speeds instantly in response to flight controller commands.

• Prevent sudden jerks during spraying to maintain even coverage.

• Improve battery efficiency and motor life by avoiding power surges.

Reliable ESCs help your drone stay stable, responsive, and ready for daily fieldwork.

5. Flight Controller

This is the brain of the drone, managing stability, direction, and smart flight features.

• Adjusts motor speeds in real-time to keep the drone balanced, even in strong winds.

• Enables automated features such as takeoff, AB line, and return-to-home.

• Maintains consistent altitude and spray path across uneven fields.

Leher drones come with agri-ready flight controllers preloaded for precision spraying and efficient field coverage.

6. GPS Module: The Drone’s Positioning Backbone

The GPS unit guides the drone’s flight path, enabling automated spraying.

• Pinpoints the drone’s location using satellite data (GPS/GLONASS).

• Enables AB line routes for uniform, hands-free coverage.

• RTK support allows centimetre-level precision for accurate spraying.

• Helps maintain legal flight boundaries and safe return-to-home.

Leher drones utilise GPS modules specifically tuned for Indian fields, ensuring every mission remains efficient and on track.

7. Battery Pack: The Powerhouse Behind Every Flight

The battery is what keeps your drone in the air—and your operations moving. It powers the motors, sensors, pumps, and onboard systems that drive every mission.

• Leher drones use solid-state lithium-ion batteries with a 30,000 mAh capacity.

• One full charge covers up to 5 acres, reducing the need for frequent swaps.

• Quick-swap design keeps downtime low and missions on track.

• Smart monitoring features track charge, heat, and voltage in real-time.

With Leher’s high-capacity battery system, you get more coverage per flight and fewer interruptions between jobs.

8. Transmitter & Receiver: Your Real-Time Command Centre

This is how you control the drone; every move starts here.

• The transmitter sends pilot commands; the receiver picks and executes them.

• Strong signal range ensures reliable spraying across large or uneven fields.

• Multi-channel controls let you manage altitude, spray, speed, and more.

• Leher drones also support app and QR-based route inputs for easier planning.

Whether you're using a remote or a phone, Leher ensures real-time, hassle-free control every step of the way.

9. Landing Gear: Stable Touchdowns, Safe Payloads

It may look simple, but it protects the drone every time it comes into contact with the ground.

• Lifts the drone body and spray system safely above uneven farm terrain.

• Provides enough ground clearance for tanks and nozzles.

• Absorbs shock from hard or sloped landings during field use.

Leher drones come with durable, field-tested landing gear that ensures every landing is safe, regardless of the crop or terrain.

10. Camera: The Drone’s Sharpest Eye

Beyond spraying, cameras help farmers scout, inspect, and map their fields from the sky.

• Captures clear visuals in 1080p or 4K to spot pest or weed issues.

• Larger sensors work better in low light, making them ideal for early or late-day flights.

• RGB or multispectral options enable various types of field analysis.

Leher drones with camera add-ons turn every flight into a real-time visual tool for better farm decisions.

11. Gimbal: Keeping Every Frame Steady

A gimbal keeps the drone camera steady, so what you see is always sharp and usable.

• Stabilises camera movement across 3 axes during turns or wind.

• Reduces vibration from motors for clearer photos and videos.

• Supports features like object tracking and live video streaming.

Leher drones with gimbals help deliver clean, reliable footage, whether you're scouting fields or verifying a spray job.

When you know how these parts work together, flying a drone becomes more than just pressing buttons. It becomes a controlled, efficient operation. You’ll be able to troubleshoot issues on the fly, adjust for better performance, and build trust with farmers or clients who rely on your services.

Also Read: Precision Agriculture Definition: Benefits, Techniques

What Agricultural Drones Like Leher Offer That Others Don’t?

Not every flying machine is ready for the farm. Agricultural drones are designed from the ground up to handle real crop conditions, long field hours, and chemical-intensive operations.

Here’s how these drones go beyond basic flight and become reliable tools for precision spraying and farm efficiency:

1. Spray Tank: Built to Carry, Sealed to Protect

The spray tank is built for field use, durable, leak-proof, and ready for action.

• Holds up to 10 litres for multiple spray rounds per charge.

• Made from corrosion-resistant material to handle all agri-inputs.

• The sealed design prevents leaks and protects the drone's internals.

• Built-in sensors track fill levels in real time.

Every Leher drone comes with this smart tank setup, ensuring consistent, safe, and efficient spraying across acres.

2. Fogger Nozzles: Precision That Clings

These nozzles break liquid into ultra-fine droplets for better stick and spread.

• Apply the atomised spray for even coverage on all leaf surfaces.

• Reduce drift, even in windy conditions.

• Reach dense canopies in crops like banana or tea.

• Work with pumps to maintain a consistent spray width.

Leher’s drones come pre-fitted with these nozzles, so every drop counts, every acre benefits.

3. Smart Sensor Suite: Intelligence for the Indian Field

These built-in sensors enable the drone to spray accurately, regardless of the terrain.

• Maintain stable flight with motion and altitude sensors.

• Adjust height automatically on sloped or uneven land.

• Detect and avoid trees, poles, and people mid-flight.

• Improve precision in windy or variable conditions.

Leher’s drones use this sensor tech to ensure every pass is clean, safe, and field-ready.

4. AB Line and Autonomous Route Modes: Precision, On Repeat

Smart flight paths ensure even spraying without manual guesswork.

• Follows straight lines with consistent overlap for uniform coverage.

• Executes full spray routes automatically, reducing effort and error.

• Routes can be set via the app or QR code, even in offline areas.

With Leher’s system, you get quick and accurate spraying, with no prior experience needed.

5. Failsafe Mechanisms That Think Ahead

Good drones fix problems before they cause losses.

• Auto-returns when battery is low or signal drops.

• Cuts spray flow instantly when the tank is empty.

• Prevents crop damage and keeps missions on track.

With Leher, every drone comes equipped to handle surprises, so you don’t have to.

• Swarm Capability: More Drones, One Purpose

Big fields need smart teamwork, not just one drone.

• Multiple drones spray in sync without signal clash.

• Ideal for 100+ acre fields, FPOs, and corporate farms.

• Cuts down job time while improving coverage accuracy.

Leher’s swarm-ready drones turn scale into speed, with zero compromise on quality.

• Spray Management System: Full Traceability, Zero Guesswork

Smart spraying means knowing every detail of every job.

• Logs area, spray volume, pilot ID, and timing.

• Real-time dashboards track job progress.

• Full traceability for compliance and audits.

With Leher’s system, every field spray is tracked, verified, and ready for review, no guesswork, just proof.

Agri-drones are precision-built for Indian farms with automation, intelligence, and reliability at the core. And platforms like Leher connect them into a full-stack spraying solution that scales with your ambitions.

Also Read: The Role of Drones to Detect Pests for Agriculture in India

Ready to Spray Smarter? Leher Has You Covered

Looking for more than just a drone? Leher brings you a full-service ecosystem of precision drones, certified operators, and real-time spray intelligence, all built for Indian farms.

• 35,000+ acres sprayed across diverse geographies.

• 2,200+ drone entrepreneurs running profitable operations.

• Trusted by 130+ progressive farmers and FPOs.

• Easy bookings via app or WhatsApp, no tech hassle.

Download the Leher App (Google Play, Apple Store) and start farming smarter, one spray at a time.

FAQs

Q. Can I retrofit my existing drone with agricultural components like a spray tank or fogger nozzles?

A. Yes, but it’s not always advisable. Retrofitting consumer drones for spraying tasks often leads to stability issues, poor coverage, and hardware damage. It’s better to use drones purpose-built for agriculture, like those offered by Leher.

Q. How do I know when a drone battery needs replacement?

A. Smart Li-Po batteries show charge cycles, temperature history, and performance data. If your drone shows reduced flight time or charging issues, it’s a sign that the battery may need replacing. Always follow the manufacturer's guidelines for safety.

Q. Do I need special training to operate a drone with advanced features like AB Line or swarm mode?

A. Yes. While these features simplify operations, training helps ensure safe, effective use, especially in agricultural settings. Leher offers certified training programs for new drone entrepreneurs and operators.

Q. What happens if one drone in a swarm malfunctions mid-mission?

A. In systems like Leher’s, each drone operates independently within coordinated boundaries. If one drone fails, others continue the task without collision or overlap, and alerts are sent to the operator instantly.

Q. Are drone-spraying logs accepted by the government or input companies for compliance?

A. Yes. Platforms like Leher provide digital logs with timestamps, operator IDs, and chemical traceability, which agri-input companies and regulators increasingly accept for transparency and reporting.