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  • Slider radartube 1

RadarTube

The RadarTube  all around reacts on encountering peculiar sounds .

When in danger, or in doubt, run in circles, scream and shout.
--Robert A. Heinlein

Particullary the moppets liked to deal with this object sportsmanlike.

material

Transformed Subwoofer-Speaker
4 Radar sensors
Electronic measuring equipment
Microcontroler
Audio amplifier
Speaker
Accumulator