TUSS4470 Homemade Evaluation Board

This project aims to design and build a PCB evaluation board for the TUSS4470 ultrasonic driver that can be manufactured in a home workshop environment.

The main objective is to create a simple, low-cost board that allows testing and characterization of the TUSS4470 in real operating conditions without relying on expensive commercial development kits.

The board will:

• Provide proper power supply and decoupling for the TUSS4470
• Allow connection of an external ultrasonic transducer
• Include basic protection and filtering components
• Be optimized for manual PCB fabrication and soldering (through-hole where possible, reasonable trace widths, minimal layer complexity). Two layer board will be needed.

Requirements:

• Created in KiCad 9.x

CI/CD — Jobs for home fabrication

On release or manual run, the KiCad PCB Jobs workflow produces the main artifact (folder main/ in kicad-job-main.zip). It is set up for home PCB fabrication using the film photoresist method:

Layer	Processing	Purpose
F (front)	Inverted and mirrored (mirror + negative)	Print on transparent film for top-side photoresist exposure
B (back)	Inverted only (negative)	Print on film for bottom-side exposure

The main job outputs layer PDFs (F.Cu, B.Cu), drill files (Excellon), and BOM (CSV). Use them to print masks on transparent film and then UV-expose the photoresist-coated blank.

License

This project is licensed under the MIT License — see the LICENSE file for details.