About

This fork focuses on the stand-alone audio measurement tool that was originally developed as part of the “Making Music over the Internet” project.

Here you will find detailed information such as the schematic, PCB layout, bill of materials, Arduino sketches, and usage instructions.

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Files

• Hardware:

  • 2022: Original version from 2022

    • Created with KiCad 8
    • Comments in German
    • Includes: Schematic, PCB Layout, Gerber Files, BOM

  • 2025: Published version with corrections

    • Created with KiCad 9
    • Comments in English
    • Includes: Schematic

• Firmware:

  • Measurement_03:: Version 1.3
    • Measurement_03.ino: imports, pins, constants, variables, main loop of state machine
    • a_setup.ino: pin modes, welcome message on screen
    • b_menu.ino: menu to choose between error detection (DETECT) and latency measurement (BURST) mode
    • c_detect.ino: error detection (DETECT) mode
    • d_burst.ino: latency measurement (BURST) mode

Note

Please refer to Info2022 and Info2025 before attempting to recreate this setup.

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License

This project is licensed under the CERN Open Hardware License Version 2 – Permissive (CERN-OHL-P).

Note: This license applies to the hardware design and firmware hosted here. The printed article and its photos as published in Elektor remain subject to Elektor’s publishing rights.