Drag, drop, wire
Snap components together and see the circuit come alive before you touch a wire.
Robotics platform
Build the future in motion.
shell.build is a friendly robotics platform where you wire components together, write real programs, and simulate your robot in the browser — then flash it to a real board over USB.
- Runs in your browser
- No install, no drivers
- Free while in beta
WorkspaceReady
Everything in one shell
A tidy toolkit that grows from your first blinking LED to a full classroom robot.
Simulate first
Test your logic in the simulator, then flash the same program to real hardware.
Flash in one click
Plug in a board and install your program over USB — no toolchain to set up.
Share a link
Send a project as a link so classmates and teachers can open and remix it.
Built-in library
LEDs, sensors, motors and more, each with friendly defaults for beginners.
Works offline
The workspace keeps going without a connection and syncs when you are back.
From idea to motion
Write, run, and install from one workspace.
The same program runs in the simulator and on real hardware, so what you design is exactly what you build.
- A visual editor for wiring components together
- A code panel that stays in sync with your robot
- One-click flashing to your board over USB
ProgramSimulated
const rover = await Roven.connect(); rover.move({direction: "forward", speed: 0.8});Blink an LED, spin a motor, or drive a whole rover — all from the same friendly shell.
Friendly, honest plans
Start free and bring your classroom along whenever you are ready.
Solo
Freewhile in beta
- Unlimited projects
- Simulator access
- Community support
Classroom
Freefor teachers
- Everything in Solo
- Shared class projects
- Guided starter lessons
School
Talk to usper institution
- Admin & rosters
- Hardware bundles
- Priority support
Ready to build something in a shell?
Open the editor and make your first robot move in minutes — no setup required.