Teachers ask us which robot to buy more than anything else. The robot matters less than what students are asked to do with it, but the platforms are not interchangeable, and the wrong one for the age or the goal costs a semester. This guide looks at four platforms from our wider collection.
Sphero: motion in the first five minutes
Sphero's rolling robots (we run the mini and BOLT class, and the same programming model covers the RVR) get a class moving with no wiring. Block programming on a tablet, immediate motion, and a course on the floor the whole room can see.
What students learn: sequencing, loops, and the idea that a program is a plan that runs whether or not it is a good plan. The floor course is the debugger.
What goes wrong: the lesson stalls at "make it go in a square". The platform is easy enough that the challenge has to come from the task, so we add constraints: a sensor gate on the course, a time limit, a payload to carry.
Age fit: elementary through early middle school. Past that, students want to see the code.
Anki Vector: sensors, decisions, and a Python SDK
Vector is a small autonomous robot with a camera, a screen face, a lift, and a software development kit. It sees, it reacts, and it can be programmed in Python.
What students learn: that a robot is sensors plus decisions plus actuators. A Vector session is where a class first meets a perception loop. With the SDK, older students write code that reads what the robot sees and decides what it does next.
What goes wrong: the hardware is discontinued and the community keeps it running, so setup takes care. We maintain a small fleet so a class does not depend on one unit. Do not buy these for a school without someone who will own the upkeep.
Age fit: upper elementary for the behavior lessons, high school for the SDK work.
Arduino: the wiring is the lesson
An Arduino board, a breadboard, a handful of sensors, and a motor driver. Nothing moves until the circuit is right and the code is right, and the student has to work out which one is wrong.
What students learn: electronics and programming at once, which is the point. Voltage, current, a pull-down resistor, a loop that reads a pin. The debugging is real.
What goes wrong: patience. The first hour is slow. We front-load a circuit that works within ten minutes so students trust the process before they meet the first bug.
Age fit: middle school with support, high school and adults on their own.
ESP32: Arduino plus a network
The ESP32 programs like an Arduino and has Wi-Fi and Bluetooth built in. That turns a sensor project into a connected one: a plant monitor that reports, a badge that talks to another badge.
What students learn: everything Arduino teaches, plus what it means for a device to be on a network. Conversations about data and security start there without being forced.
What goes wrong: school networks. Plan for a local hotspot or an offline mode. We also give students a working recipe to follow on these boards before they start improvising.
Age fit: high school and adults.
How we choose
| Goal | Platform | Why |
|---|---|---|
| First exposure to programming, whole class, short session | Sphero | Immediate motion, visible results, no wiring |
| Perception and decision-making, robot behavior | Vector | Camera, face, and an SDK to show what is underneath |
| Electronics fundamentals with real debugging | Arduino | The wire and the code both have to be right |
| Connected devices, data, and security conversations | ESP32 | Same skills as Arduino plus a network |
The delivery robot
We also operate an OrionStar delivery robot for demonstrations. It is not a classroom platform. It is a good way to start a conversation about what commercial robots do all day and who programs them.