Product | Audio Module | MP3 Sound Module Mini SD Card
MP3 Sound Module Mini SD Card
MP3 Sound Module Mini SD Card
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MP3 Sound Module Mini SD Card


Click to see the detail information about WTV020SD-20SS Music Sound Chipset

This Mp3 sound module version of V1.1 is updated version of V1.0 and have all of the function of V1.0.And the V1.1 has a delay by default, but if you don't need the delay, you can remove the delay in a very easy way as below : "please don't detest the signal of "busy control", then there is no any delay, it is very easy to change in the code".

Please notice that we will ship MP3 SD Card Sound Module With Two-Line Serial Control Mode by default, and if you need any other mode, please leave us message or let us know when you check out .

The SD card are not include in this item list, the SD card in the picture is just to help customer to find the correct SD card for this item.

Description :

WTV020-SD module is a reusable mass storage voice module ,can plug a maximum capacity of 1GB SD card memory and can load the WAV and AD4 audio .The voice module uses WTV020SD-20SS as the core chip , with MP3 control mode, one to one key control mode, power on loop control mode and the two-line serial control mode.

Features :

1、Support plug-largest-capacity of 1G SD card

2、Automatically identify audio files

3、Can load WAV audio at 6KHz ~ 16KHz sample rate

4、Can store up to 512 Section voice

5、Support for micro-processor and key control

6、With power-down save operation data function

7、Support combination of documents playback, including the mute combination

8、Quiescent Current: 16uA (do not insert SD card)

9、Support play 4 Bit ADPCM format file

10、Can load AD4 audio at 6KHz ~ 32KHz and 36KHz sampling rate

11、16bitDAC and PWM audio output

12、With WTV020-SD-20S, WTV020-SD-16P two module types

13、Can play any paragraph of the voice

14、Can be loaded voice without software, just need to place voice into the SD card

15、Operating voltage: DC2.5 ~ 3.6V

Overview :

WTV020-SD module is a voice-rewritable voice modules with maximum storage capacity up to 1GB SD card memory. It supports WAV and AD4 audio format.

WTV020-SD voice module adopts WTV020SD-20SS as core procesing chip. It supports MP3 control mode、Key control models (5-voice)、Loop play mode and two-line serial control mode . Control mode is set while producing, which can not be changed through configuring.

1、MP3 control mode: play / stop, next, last, volume +, volume - and so on.

2、Key control mode (5 voice): Support three sub-control methods as below :

    1) Key can be duplicate-triggered by pulse ;
    2) All keys are Play/Stop trigger (No single recycled) ;
    3) All keys are Play/Stop trigger (single can be recycled).

3、Loop play mode: After powered on, no need to trigger any I / O port, directly play all the voice in SD card, with functions to record playing points while power off, from which it plays while powered on again. Two sub-control modes, 1. P04 has pulse-triggered play/pause function; 2. P05 has level-triggered play/pause function.

4、Two-line serial control mode: controlled by MCU clock via CLK and DI data lines. Free to play voice at any address. In this mode, it has voice combination play function.

Audio content updates directly to SD card on the PC. The module supports FAT file system. Support AD4 of 6KHz ~ 32KHz, 36KHz sampling rate and WAV audio of 6KHz ~ 16KHz sampling rate.

Notice: Please choose the mode you want to order, then we will ship for you as you requirement  and module with key control mode will be delivered by default if there is no special requirement.

Applications :

WTV020-SD module can be used in automotive electronics (anti-theft alarm system, reversing radar, GPS navigation systems, electronic dog, central locking), intelligent home systems, home burglar alarm, the human voice prompt of medical devices, music players, home appliances (cooker , rice cookers, microwave ovens), entertainment (games, amusement machines), learning models (early learning machine, child audio books), intelligent transportation equipment (toll stations, car parks), communications equipment (telephone exchanges, telephone), industrial control areas (lifts, industrial equipment), toys and other fields.

How to use MP3 module with Arduino

If you want to control the mp3 player with serial port commands with arduino, first you must put the cof.mp3 file with number 1 inside the advert1 folder.

The busy pin does not tell you when the player stop, is for connecting a blinking led.

This is sample code for playing folder advert01, song 002.mp3 in arduino:

mySerial.print(0x07,BYTE );

Perhaps there is another mode of sending it, with an array... but it works

Last, if you don’t know if the module is working, look to the leds.

The module has 3 green leds:

1 - Standby

2 - SD Ready ->Only glows if there is a valid SD Card with the cof.mp3 file inside

3 - SD Busy ->Blinks when reading from SD

Mp3 Module can connect with any digital I/O interface of Arduino

Document Download

1、Connectiong Interface and test code for Arduino ( Two Line Mode )

2、Click to download Manual

3、Click to download the datasheet


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