Visualizing sound waves with a custom Pico 2W ultrasonic phased array

Name: Visualizing sound waves with a custom Pico 2W ultrasonic phased array
Availability: InStock
Author: PaulGilli

by PaulGilli·Jun 8, 2026·2 points·0 comments

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Open-source acoustic camera built on a Pico 2W visualizes sound waves directly.

Strengths

•Phased array math running on a microcontroller enables cheap acoustic imaging.
•Full CAD and firmware open-sourced for others to replicate the measurement rig.
•Replaces subjective listening tests with objective visual beamforming data.

Weaknesses

•Primary deliverable is a video, not an installable tool or library.
•Hardware build complexity limits adoption to serious electronics hobbyists.

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