How to troubleshoot WTV020SD-16P music module

If your WTV020SD-16P music module is not working properly, please check these:

1. Download AD4 format sample files from here.
2. Use a 2GB MicroSD card. It is available on www.buildcircuit.net. You don't need to format the MicroSD card.
3. Start with this basic experiment: http://www.buildcircuit.com/mp3-mode-circuit-wtv020sd-16p-tutorial/
4. DO NOT use 5V power supply for the project. 5V will burn both your MicroSD card and the music module. Use 3.3V power supply only. You may use a 3.3V regulator chip or get power from Arduino.

Problem: MicroSD card does not fit on to the module: If your MicroSD card does not fit on the module card case, simply push the card bit harder. It goes inside the case with a 'tick' sound. Other important points: a. Micro SD card: Use a 2GB microSD card. I have tested with 1GB card, but it didn’t work. You can buy a 2GB micro SD card from www.buildcircuit.net. b. Music file format: *.AD4. c. File names: 0000.ad4, 0001.ad4, 0002.ad4 and so on. Download Sample Files d. After you construct the first circuit on a breadboard, press the NEXT or PREV switches for at least 5 seconds. If all the connections are correct, your music will play. e. Try this experiment first: http://www.buildcircuit.com/mp3-mode-circuit-wtv020sd-16p-tutorial/ f. Read this article carefully: http://www.buildcircuit.com/how-to-use-wtv020sd-music-module-with-arduino/   DO NOT use 5V power supply for the project. 5V will burn both your MicroSD card and the music module. Use 3.3V power supply only. You may use a 3.3V regulator chip or get power from Arduino.