Fermion: DFPlayer Pro - A mini MP3 Player with On-board 128MB Storage (Breakout) Shipping:4-6 Days * 1x CR2032 Battery Holder

* 1x CR2032 Battery Holder

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pdf) (ATSAMD21G18)

and can be turned on under software control

It differs significantly from traditional IR rangefinders in that it uses ToF to determine range and not triangulation — as is performed by the Sharp GP-series devices

Fermion: DFPlayer Pro - A mini MP3 Player with On-board 128MB Storage (Breakout) Shipping:4-6 Days * 1x CR2032 Battery HolderHere comes the DFPlayer Pro A mini simple but powerful MP3 Player! This MP3 player module supports four controlling modes: Arduino, AT command, on board buttons, and ADKEY. You can directly press the on board button to play or switch music without using a controller. Moreover, this player module has 128MB of storage. By using a USB cable, you can easily copy your favorite songs into this module to play them anywhere you want, or use it as a sound card