Ultraino: DIY ultrasonic airborne phased-array 64 channels

We present Ultraino, a modular, inexpensive, and open platform that provides hardware, software and example applications specifically aimed at controlling the transmission of narrowband airborne ultrasound. The software can be used to define array geometries, simulate the acoustic field in real time and control the connected driver boards. The driver board design is based on an Arduino Mega and can control 64 channels with a square wave of up to 17 Vpp and π/5 phase resolution. Multiple boards can be chained together to increase the number of channels. 40 kHz arrays with flat and spherical geometries are demonstrated for parametric audio generation, acoustic levitation and haptic feedback.

Paper: http://ieeexplore.ieee.org/document/8...
Instructables: https://www.instructables.com/id/Ultr...
Latest simulator release: https://github.com/asiermarzo/Ultrain...