13 Comments

  1. June 9, 2013 at 6:00 am

    Alessandro Malaquias

    Hi
    I needle help,
    I have one WVT020 P16 , I set up simple circuit without microcontroller . My SD card was format FAT16 and contains four files .ad4. these these have been downloaded from the website. When start on the module wvt020 p16, the led connected in Busy(p15) flashes and nothing else happens.
    You guys could help my?
    Graciously
    Alessandro

    Reply
    1. June 9, 2013 at 8:08 am

      Sagar Sapkota

      First thing, use a 2GB microSD card, the module does not work with 1GB or other cards, I have tested with that. Second thing, press the next or prev buttons for a while ,for example 5 seconds. If it not still working, there is either problem in your microSD card or the module itself.

      Reply
  2. July 15, 2013 at 1:41 am

    Alessandro Malaquias

    I’m work whit wtv020sd-16 in module serial(two line), the wtv020sd-16 is connect in microcontroller PIC. When send the number for track what is in sd card the track number is play. However, if send other number track the previous track is stopped and back to start and the number of the track that was sent is only reproduced if sent twice. how can I send alternate tracks being played and they immediately?

    Graciously
    Alessandro

    MY CODE;

    void send(int addr)
    {
    unsigned int i;

    CLK = 1;
    delay_ms(2);

    for (i=16; i>0; i–)
    {
    delay_us(50);
    if((addr>>i)&0x0001 > 0)
    {DI = 0;}
    else{DI = 1;}

    delay_us(50);
    CLK = 0;
    delay_us(50);

    if(i>0){DI=1;}
    else{DI=0;}
    delay_us(50);

    if(i>0){CLK=1;}
    else{CLK=0;}
    }
    }

    if(BT1==0)
    {delay_ms(100);
    if(BT1==0)
    {while(BT1==0);
    send(STOP);
    rest();
    delay_ms(1500);
    }
    }

    if(BT2==0)
    {delay_ms(100);
    if(BT2==0)
    {while(BT2==0);
    send(N);
    if(N>=8){N=0;}
    else{N++;}
    delay_ms(200);
    }
    }

    Reply
  3. September 27, 2013 at 1:40 am

    Haiko

    is each wtv020sd-16p module after power on in mp3 mode. How is possible to change the mode?

    Reply
  4. October 31, 2013 at 11:39 pm

    Philipp

    Hi,

    The PlayVoice Command Loops and BusyLed dont turn off, but otherwise on async the Led turn off.

    Reply
  5. November 7, 2013 at 12:24 am

    Marek

    Hi,
    I’ve just tested it and work with 1 GB SD card but play only ad4 files.

    Reply
  6. November 9, 2013 at 10:30 pm

    Bart

    Do you know how to use this module in the 3 or 5 voice mode? I just want to trigger a few sounds without an arduino

    Reply
  7. December 6, 2013 at 1:41 pm

    Arell

    I’ve seen most examples in Serial mode and MP3 mode. How do I get the module to run in 5 group of voice mode. I would like to connect 5 buttons to trigger 5 different AD4s… The datasheet says the module is a OTP module. Who sells a 5 group of voice mode module?

    Reply
  8. January 10, 2014 at 3:44 pm

    RovDan

    First my question : I understand this module is able to work in several modes. However, I haven’t see anywhere how we can select the mode we want to use ?

    My module works fine. I see many people have problem with their SD card. In fact, I noticed for example a Sandisk 2Go works fine with 3.1V Power. Another same Sandisk 2Go doesn’t work under 3.6V !

    Good music !

    Reply
  9. June 27, 2014 at 2:28 pm

    vishmika

    then I compile the sketch it says ” ‘wtvosd16p’ does not name a type ”
    it would be great if you could suggest the cause of the error

    Reply
  10. February 24, 2015 at 6:59 pm

    Erezx

    Hi, I want to share with you my experience that may save you hours of aggravation using this module.
    You have to format the SD card using an SD formatting software. Don’t use Windows nor Mac to format the card – it won’t work!
    I used SDFormatter. configure it to a FULL ERASE.
    Good luck!

    Reply
  11. March 15, 2015 at 7:25 am

    Jay Sern

    hey. i built the circuit following the video on an arduino. im using a kingston 2gb micro sd card. however the led blinks but doesnt produce any sound. I noticed the recommended speakers has a power of 0.25W and the one I am using is 2W. Could that be the reason there isnt any sound??

    Reply
  12. October 30, 2016 at 3:13 pm

    nemezida.su

    how to increase the volume?

    Reply

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