The experiments in the Grove kit that I purchased required upgrading and then downgrading the IoT build to match the hardware revision of my unit I guess. This was awkward and time consuming to resolve. thanks for assistance on that.
The Lesson - 2 has a note to run the ToneGenerator.py program to generate the .wav files for that project. I had trouble with subsequent lessons since the note wasn’t included in them. Since the lessons were broken up into separate work sessions and the Beagle was powered down between lessons to rewire the sensors, it was not apparent that the ToneGenerator.py was required to be run for the other lessons as well.