UM-1 Ultrasound Sensor Interface



Design by
Bill Vorn & LP Demers
Montréal (Québec) Canada
© 1992

Circuit design, electronics, programming by
Alain Martel





The UM-1 Ultrasound Sensor Interface is an 8-channel device that converts distance values to MIDI messages.Each sensor is a Polaroid 6500 ultrasonic transducer that measures distance from 0.4m up to 11m. The range between the minimum and maximum values is then converted by the interface into 128 discrete steps of a corresponding MIDI continuous controller.


Front view

Back view



Technical Specs



• Dimensions

• AC Power

• Output

• Input

9 (H) x 48 (W) x 26 (D) cm

110 VAC 60 Hz


8 Polaroid 6500 ultrasound sensors (XLR4)


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© Bill Vorn 2014