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What is a drone?

A drone is any aircraft that flies without a human pilot on board. The formal name is UAV - Unmanned Aerial Vehicle. Instead of a cockpit, a drone is flown by a person on the ground with a remote control, or by a computer running code (that’s where you come in this week). Your Echo Drone is a quadcopter: a drone lifted by four spinning propellers. It’s the most common design in the world because it’s simple, stable, and easy to control.
The word “drone” originally described the low humming sound of male bees. Early remote-controlled aircraft made a similar buzzing noise - and the name stuck.

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What every drone needs

No matter the size, every drone shares the same core ingredients. Together, these four systems make lift, provide power, think, and stay connected.
Diagram of the four systems every drone needs: lift, power, brain, and command link

Every drone - toy or military - needs these four systems

A way to make lift

Propellers, rotors, or wings that push against the air to rise and stay up.

A power source

Usually a rechargeable lithium battery that drives the motors.

A flight controller

The small onboard “brain” that keeps the drone balanced and carries out commands.

A command link

A radio or Wi-Fi connection to a controller, phone, or computer.

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Drones vs. other aircraft

A quadcopter isn’t the only way to fly - but it’s the friendliest to learn on. Here’s how the three main designs compare, and how each one makes lift.
Comparison of quadcopter, helicopter, and fixed-wing plane and how each makes lift

Three designs, same goal: make enough lift to beat gravity

Your Echo is a quadcopter, so it can hover perfectly still in the air - something a fixed-wing plane can never do. That’s exactly what makes it great for indoor flying and coding precise moves.

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Drones come in all sizes

Drones range from palm-sized toys to aircraft with wingspans wider than a school bus. Your Echo sits near the small, safe end - light enough to fly indoors and land on your hand.
Scale comparison of drone sizes from tiny toy drones to large military drones, with a human for scale

From nano toys to giant cargo drones - your Echo is on the small, safe end

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Where drones are used

Drones started as military tools, but today they’re everywhere - doing jobs that are too dangerous, too expensive, or simply impossible for people.
Grid of drone use cases: photography, delivery, agriculture, search and rescue, mapping, inspection, racing, and environmental monitoring

Drones do real work across dozens of industries

Sweeping aerial shots in movies, sports, and real estate that once needed a helicopter now come from a drone costing a tiny fraction as much.
Companies deliver medicine, food, and packages by drone - reaching remote areas in minutes instead of hours.
Farmers use drones to scan fields, spot sick crops, map water, and even spray precisely where it’s needed.
Thermal-camera drones find lost hikers and disaster survivors by their body heat, day or night.
Drones survey land, inspect bridges, cell towers, and power lines, and build 3D maps - keeping humans off ladders and out of danger.
Researchers track wildlife, monitor forests and glaciers, and study storms without disturbing the environment.

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Why drones matter

Drones combine several technologies you’ll touch this week - flight, sensors, cameras, wireless communication, and computer vision. Learning to program one means learning how modern autonomous machines actually work, from self-driving cars to warehouse robots.
As you go through the week, keep asking: “What job could I give a drone?” The best capstone projects come from spotting a real problem a flying camera-computer could solve.

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Talk about it

Great discussion questions to run with your group:

Helpful or harmful?

Name one way drones help people and one way they could be misused. How do we get the good without the bad?

Spot the drone job

What’s a job in your town a drone could do better, cheaper, or more safely?
You can explain that a drone is an unmanned aircraft, name the four things every drone needs, compare a quadcopter to a plane, and give three real-world uses.