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WhizzBizz Manuals & User Guides

WhizzBizz creates innovative electronic modules, robotics projects, and custom embedded systems, specializing in retro-audio devices like the Retrophone MP3 player.

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WhizzBizz Electronics & Modules

WhizzBizz operates in the realm of custom electronics, embedded systems, and robotics design. The brand focuses on creating unique inventions, 3D modeling, and electronic prototypes.

One of their notable applications includes the "Retrophone," a telephone switchboard device equipped with the DFPlayer Mini (MP3-TF-16P) that plays audio files through classic landline phones. WhizzBizz offers hobbyists and creators unique electronic modules that blend old-fashioned aesthetics with modern digital capabilities.

WhizzBizz manuals

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WhizzBizz PCB V2.0 Vintage Telephone Instruction Manual

29. juna 2026
WhizzBizz PCB V2.0 Vintage Telephone Specifications Open-source design and firmware available on GitHub: https://github.com/ArnoudWhizzbizz/retrophone Electronic design and software licensed under GPL-2.0. Two versions available: RJ11 for modern/foreign telephones. PTT socket…

Retrophone Assembly Instructions

uputstva za sastavljanje
Assembly and configuration guide for the Retrophone telephone jukebox, including technical specifications, component mounting instructions, and PCB version notes.

Retrophone User Manual

priručnik
Comprehensive user manual for the Retrophone, a telephone switchboard that connects classic landline phones to an MP3 player for custom audio playback.

WhizzBizz support FAQ

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  • sta file formats does the WhizzBizz Retrophone support?

    The Retrophone player supports WMV/WMA (WAV) and MP3 formats. Encoding MP3 at a constant bitrate of 128 kbps is recommended, but uncompressed WAV files often offer the highest playback reliability.

  • What is the maximum microSD card size for the WhizzBizz MP3-TF-16P module?

    The module accepts microSD cards (TF cards) up to 32 GB, formatted with either an MS-DOS or ExFAT file sistem.

  • How do I power the WhizzBizz Retrophone?

    The Retrophone requires a 9-volt DC power adapter with a 5.5 mm pin diameter and a 2.5 mm hole for the positive terminal.

  • How should I organize audio files on my Retrophone memory card?

    Audio files should be organized in up to 10 numbered folders ('01' to '10'), each containing up to 10 numbered clips ('001.WAV' to '010.WAV'). Files placed on the root level are used for dial tones and busy signals.