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How to add an external supply into nano board with dfplayer mini? - Project Guidance - Arduino Forum
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Amazon.com: ACEIRMC 5pcs YX5200 DFPlayer Mini MP3 Player Module MP3 Voice Decode Board Supporting TF Card U-Disk IO/Serial Port/AD Compatible for Arduino : Electronics
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Play audio with Arduino | Play Audio with DF Player Mini | DF Player Mini Interfaces Arduino Nano - YouTube
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arduino nano - DFPlayer Mini does not boot reliably after being powered down - Arduino Stack Exchange
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