This was my research from May 2024-February 2025. I was hired by a Mechanical Engineering lab at the University of Michigan to create a voltage source that could interface with the MD1711 + TC6320 Demoboard to generate ultrasonic sound. The main tasks along with this were keeping the system low cost, small, and portable, with an end goal of open source publication to allow for widespread use.

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The demoboard needed at minimum eight power control inputs and five voltage trigger inputs at specific timings. I utilized IC switches, the Teensy 4.0, Inverting Switching Regulator, as well as buck converters to create my module. Before this I never used both negative and positive voltage on the same PCB, and with cost and size being a limiting factor, it was fun to map out this board in a purposeful way. The Teensy 4.0 Controlled the timings and the IC switches, my code is pretty simple but also below!

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The ultrasonic sound would be used underwater, so I also learned some rapid prototyping of a sealed circuit casing. I used piezoelectric hydrophones as the generation point for the waves. Performance validation through testing demonstrated successful replication of desired ultrasonic waveforms, highlighting the potential for broader adoption in various underwater research fields.