From USB cable to running Python.

Install the extension

Install MicroPython Studio in VS Code from the Marketplace. Alternatively, open the Command Palette and choose Extensions: Install from VSIX… after downloading the verified stable file above.

Connect your board over USB

Use a USB data cable, not a charging-only lead. Check that the serial device appears in your operating system. Start with the board's own supported MicroPython firmware; do not flash a debugger image until you have confirmed the exact model.

Prepare the workspace

In VS Code, press Ctrl + Shift + P (or the Command Palette shortcut on your OS) and run MicroPython: Setup Development Environment. Then choose MicroPython: Create New Project or open an existing project.

Open the shell and verify the interpreter

Choose the board's USB REPL serial port and run MicroPython: Open Device Shell. You should see a >>> prompt. Try this:

import sys
print(sys.platform)
print("MicroPython Studio connected")

Run a script

Save a file such as hello.py and use MicroPython: Run Script on Device. When that works, try MicroPython: Refresh Device Files to browse the board.

from machine import Pin
import time

print("Hello from MicroPython Studio")
for count in range(3):
    print("Loop", count)
    time.sleep(0.5)