News Summary

• Pitch and volume are controlled by moving hands closer or farther away from two antenna.
• The ESP32 uses its capacitive touch circuitry to detect effectively detect hand proximity to the two antenna in question.
• That waveform is then pumped out over the onboard digital-to-analog converter for playback on external speakers.
• It seems that the entire pitch range is compressed within a millimeter or two, which is not playable.
• Without playing even a single pitch for a second it seems to be modulated with some noise as well.