Gravity: MP3 Player Module with 8MB Storage (UART, Mono)

The Gravity MP3 Player Module has 8MB flash storage and supports MP3 and WAV formats, operating within a 3.3V to 5V range. It features a UART interface and supports sampling rates from 8kHz to 48kHz. The module can emulate SPIFLASH to a USB drive, allowing for easy audio updates via a USB flash drive, and offers 30 levels of volume adjustment. With compact dimensions of 22x30mm, it is compatible with Arduino. The Gravity interface makes wiring simpler for beginners. This module is perfect for adding sound effects or voice prompts to toys, as well as simple voice alerts in devices like medication reminders, timers, or alarms.

MP3 Module Selection Guide

Picture
Name	DFPlayer	DFPlayer Pro	Gravity: UART MP3 Voice Module
SKU	DFR0299	DFR0768	DFR0534
Storage	Storage Card Required	128MB	8MB
Sound Channel	Mono	Dual-channel	Mono
Virtual USB Drive Support	No	Yes	Yes
ADKEY Control Support	Yes	Yes	No
On-board Power Amplifier Support	Yes	Yes	Yes
Audio Format	MP3, WAV, WMA	MP3, WAV, WMA, FLAC, AAC, APE	MP3, WAV
Communication	UART	UART	UART
Operating Voltage	3.3V/5V	3.3V/5V	3.3V/5V
Dimension	20*20mm/0.79*0.79"	23*24.5mm/0.91*0.96"	22*30mm/0.87*1.81"
Price	$5.90	$8.90	$6.90
Features	1. Small size 2. Support IO, serial port and ADKEY control 3. Maximum support 32G of the TF card, suitable for occasions in need of abundant audio files	1. Stereo dual-channel output 2. Support four controlling modes: Arduino, AT command, on-board buttons, and ADKEY 3. On-board 128MB high-speed storage, perfect for occasions in need of storing small numbers of audio files 4. Support the USB cable to copy music 5. Can be used as a sound card for the PC or Raspberry Pi	1. DF-Gravity interface, easy to connect 2. On-board 8MB storage 3.Support the USB cable to copy music 4. Suitable for playing sound effects and prompt sounds