Product |
Audio Module
| MP3 Sound Module Mini SD Card
MP3 Sound Module Mini SD Card
1、 The product features
（1）Support maximum 1G SD card （2）Support 4Bit ADPCM format
（3）Support auto-recognize voice file
（4）Support AD4 with audio sampling rate of 6KHz ~ 36KHz
（5）Support WAV with audio sampling rate of 6KHz ~ 16KHz
（6）16bitDAC and PWM audio output;
（7）Maximum store up to 512 voice segment
（8）Two module types of WTV020-SD-20S and WTV020-SD-16P
（9）Support Micro-processor and key control
（10）Support call and play of any voice pieces
（11）Auto-save operation data while power-down
（12）Directly download voice file to SD card without any auxiliary software
（13）Support Files combination play, including mute combination
（14）Operating voltage: DC2.5 ~ 3.6V
（15）Static Current: 16uA (while without SD card)
2、The product 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-20S as core procesing chip. It supports MP3 control mode, key control models (3-voice and 5-voice),pwer control mode or 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 (3 voice): one key to trigger a voice, can play 3 pieces of voice and adjust volume. All keys are default as no duplicate trigger for pulses.
3、Key control mode (5 voice): Three sub-control methods, 1. Key can not be duplicate-triggered by pulse; 2. All keys are play / stop trigger (No single recycled); 3.All keys are Play/Stop (single can be recycled).
4、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.
5、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.
Note: please choose the mo3 mode you want to order and we will ship for you as you order!
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(0x7E,BYTE);
mySerial.print(0x07,BYTE );
mySerial.print(0xB0,BYTE);
mySerial.print(0x30,BYTE);
mySerial.print(0x31,BYTE);
mySerial.print(0x30,BYTE);
mySerial.print(0x30,BYTE);
mySerial.print(0x32,BYTE);
mySerial.print(0x7E,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
Connectiong Interface and test code for Arduino ( Two Line Mode )
And Mp3 Module can connect with any digital I/O interface of Arduino
Click to download Manual
Click to download the datasheet
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