The script you will be working with has a custom module called multimeter added to the micro:bit filesystem.  That multimeter module is already part of the .hex file you will download and then open in the online editor.

  • Right-click continuity_tester.hex and select Save link as... to download it.


  • Go to
  • Click Load/Save and then drag the file you just downloaded and drop it on the gray box in the Load section.

(View full-size: download-measure-continuity-hex.mp4)

  • Plug the USB cable into the micro:bit and your computer.
  • Click the editor’s Connect button.
  • Click the Flash button to load the script into the micro:bit.