Meet Your Robot Car · Robot Car Club

What we'll do today 🎉

Welcome to the club! You don't need to know anything about robots or coding yet — that's exactly what we're here for. By the end of this session you'll be able to name the main parts of your car, wake it up, and make it move. That's a real robot, in your hands, on day one.

Here's a car that's already built and switched on, so you can see where we're headed:

A fully built ELEGOO Smart Robot Car V4, awake and ready to roll — clip from a V4 assembly walkthrough.

Is your car already built? Some clubs hand out a car that's put together for you. If yours isn't built yet, that's totally fine — building it is our next session. Today is all about meeting it and turning it on.

What you need

Your Smart Robot Car V4 (built, or your kit box)
The black battery box with the ELEGOO label (the battery lives inside it)
The USB charging cable from the kit
The little remote control from the kit
A flat, clear patch of floor or table

What's in the box? 📦

A robot car is really just a few simple things working together. Let's take a peek at everything that comes in the kit:

A tour of everything in the box — the boards, sensors, motors, big tires, cables and remote. Clip from a V4 assembly walkthrough (0:43–1:30).

Meet the parts

Don't worry about the long names! Every robot has the same four kinds of parts. Find each one on your car using the picture below.

Labeled picture of all the parts in the Smart Robot Car V4 kit: plates, boards, motors, sensors, battery box, tires — Everything in the V4 kit, labeled — from the ELEGOO Smart Robot Car V4.0 User Manual (p.2).

🧠 The brain — the two stacked boards on top (the UNO and the expansion board). This is the computer that tells the car what to do.
💪 The muscles — the four big wheels, each spun by a yellow motor hidden behind it. These make the car actually move.
👀 The eyes — the ultrasonic sensor on the front that looks like two round eyes. It helps the car "see" things in its way.
🔋 The heart — the black battery box underneath. It gives the whole car its power.

Game: Point to your car and find all four — brain, muscles, eyes, heart. Can you find them in under 30 seconds?

Let's wake it up! 🔋

First, get to know the battery box — it has the three things you'll use today. Keep this picture handy; every step below points back to it.

The battery box with its three parts labeled: Power Switch, USB Charging Port, and Status Indicator Light — The battery box up close — the **power switch**, the **USB charging port**, and the **status light**. From the ELEGOO V4 User Manual "Assemble the Battery Box" (p.11).

It's a lithium battery — treat it kindly: only charge it with an adult nearby, never bend or poke the box, and unplug the cable once it's full. If the box ever feels hot or puffy, tell a teacher right away.

Charge it up first

Plug the USB charging cable into the battery box's charging port (see the picture above), and the other end into a USB charger or computer. A full battery is important — a hungry car drives slowly and turns badly.

Read the light: while it's charging, the status light glows green. When the light turns off, the battery is full and ready. (If your club charged the cars ahead of time, you can skip straight to Step 2.)

Mark this step done

Put it down flat, then slide the switch to ON

Set the car on a clear patch of floor (not a table — robots don't know about edges yet and will drive right off!). Find the power switch on the battery box and slide it toward the ON label. The status light comes on — your car is awake! 🤖

Then hands off, and count to three: the instant you switch on, the car uses a little tilt sensor (its "gyro") to learn which way is straight. If it's being moved or held in the air right then, it gets confused and drives crooked later. So set it down first, flip the switch, let go, and count one… two… three.

Mark this step done

Drive it for the first time!

Your car comes with a program already loaded at the factory, so it's ready to play right away. Pick up the remote, point its front at the car, and press the direction buttons — Forward, Backward, Turn Left, Turn Right. Congratulations, you're driving a robot! 🏎️

The IR remote with buttons labeled: Forward, Turn Left, Backward, Turn Right, and the mode keys for Line-tracking, Stop, Obstacle-avoidance, and Auto-follow — What each remote button does — from the ELEGOO V4 User Manual "Control the Car Using the IR Remote" (p.26).

Remote not working? Brand-new remotes have a thin plastic tab sticking out of the back — pull it all the way out so the battery can touch.

Try this too: press the Obstacle-avoidance key on the remote, then put it down and wave your hand in front — watch it drive around by itself and steer away from your hand! We'll learn how that works in a later session.

Mark this step done

Building from a kit instead of a finished car? Your battery's plug needs to go into its socket on the board. Make sure the switch is OFF first, then push the white plug onto the matching pins — it only fits one way, so if it won't go, turn it around. Never force it. (We'll do the full build next session.)

The red-and-black battery wire being pushed onto its connector on the car's board — Where the battery plugs into the board — frame from a V4 assembly walkthrough (≈5:21).

If something's not working

Nothing happens when I flip the switch

Check three things: the switch is really slid all the way to ON, the battery has charge in it (plug in the USB cable — the light glows green while it fills up), and, on a kit-built car, that the battery plug is pushed firmly into its socket on the board.

The car drives crooked instead of straight

It was probably moved while you switched it on. Switch it off, set it down flat, switch it back on, and let it sit still for two seconds so it can find "straight" again.

The remote doesn't do anything

Point the front of the remote right at the car and get a bit closer — the remote uses invisible light, so it needs a clear line to the car. Make sure the car is switched on, and if the remote came with a plastic tab on its battery, pull it out.

The wheels don't all spin

On a built car, check that all four motor plugs are pushed firmly into the board and that nothing is jammed against the tires. Low battery can do this too — charge it up.

Level up 🚀

You did it — you brought a robot to life! Now the fun question: what should we teach your car to do next? Make it follow a line on the floor, dodge around obstacles all by itself, or take its first drive while you steer from a phone? Pick what sounds coolest, and that's where we'll head in our next session.