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MP3 player with RGB-signal LED (optionally battery powered) | OpenHardware.io - Enables Open Source Hardware Innovation
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Basics: Project 051c Serial MP3 player module by Catalex, Touch sensor, Potentiometer at Acoptex.com / ACOPTEX.COM
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MP3 Player Kit with OPEN SMART Board Micro SD Card Touch Sensor Module MP3 module and speaker kit for Arduino|kit for arduino|kit kitskit for arduino r3 - AliExpress
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Arduino Project: MP3 player using Arduino and DFPlayer mini MP3 player module from banggood.com - YouTube
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