For a completely different approach, Grok Learning exposes MicroPython to the browser via a WebSocket: https://groklearning.com/microbit/ https://groklearning.c

For a completely different approach, Grok Learning exposes MicroPython to the browser via a WebSocket: https://groklearning.com/microbit/ https://groklearning.com/microbit/ We find this approach works fine, assuming you have a stable internet connection.