Echo Debug-

Echo-Debug

Echo Debug Gen3

📌 Project Overview

Echo Debug Gen3 is a custom adapter PCB designed for the Amazon Echo Gen 3.

The Amazon Echo Gen 3 contains a hidden USB interface that can be accessed using this adapter board. The purpose of this PCB is to provide a clean and convenient connection to the internal USB interface instead of cutting a normal USB cable and manually soldering wires.

This project was designed using KiCad and includes the complete schematic, PCB layout, Bill of Materials (BOM), and manufacturing files.

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🎯 Project Objectives

The main objectives of this project are:

• Design an adapter PCB for Amazon Echo Gen 3.
• Provide convenient access to the hidden USB interface.
• Connect the USB data lines correctly.
• Provide access to selected device voltage points.
• Learn practical USB PCB design.
• Understand differential-pair routing.
• Practice KiCad schematic and PCB design.
• Generate manufacturing-ready PCB files.

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🔧 Main Features

• Designed specifically for Amazon Echo Gen 3.
• USB interface access.
• USB D+ and D− differential pair.
• Fastboot access.
• Device voltage test points/headers.
• Optional voltage indicator LEDs.
• Compact PCB design.
• Rounded PCB corners.
• KiCad source files included.
• Manufacturing files included.
• BOM included.

The original project's v1.1 revision corrected the USB differential-pair connection, removed zero-ohm resistors, added optional LEDs for +12 V and +1.9 V, rounded the PCB corners, and changed the USB connector to a lower-cost variant. :contentReference[oaicite:1]{index=1}

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🧰 Tools Used

• KiCad
• KiCad Schematic Editor
• KiCad PCB Editor
• KiCad 3D Viewer
• USB interface
• Linux/Android debugging tools for testing

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│ └── Project images │ └── README.md