WhizzBizz creates innovative electronic modules, robotics projects, and custom embedded systems, specializing in retro-audio devices like the Retrophone MP3 player.
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.
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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.
The module accepts microSD cards (TF cards) up to 32 GB, formatted with either an MS-DOS or ExFAT file sistema.
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.
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.