C4T free concept simulator
Virtual micro:bit Concept Simulator
Explore course concepts through adjustable values, prediction, deterministic feedback, and an explanatory trace.
This free concept simulator supports guided prediction, comparison, and reflection. It does not execute code, train models, run databases, create repositories, or replace full project software. The course's always-free pathway also explains how to create project files with freely installable or open tools; paid services and physical hardware remain optional.
Free concept simulator
Virtual micro:bit Concept Simulator
Explore course concepts through adjustable values, prediction, deterministic feedback, and an explanatory trace.
Safety note: No device is connected. Physical projects should use approved low-voltage accessories and follow classroom safety guidance.
1 · Predict
Will the modeled event produce a small, medium, or full display pattern?
2 · Explore
How many button events the program receives.
A virtual channel shared by communicating devices.
3 · Inspect the result
Ready to simulate
Choose a prediction, adjust the controls, and run the lab. The displayed result comes from the simplified values and rules on this page.
Courses using this free concept lab
Lab ID: microbit-lab. The guided controls run in your browser; this page does not execute course code or connect to external hardware, model, database, or deployment services.