WTV-040 is low cost sound record and playback module which can be used to play 32 different sounds using 5-bit address pins. The module works with 3.3V supply, but the adaptor makes it compatible for both 5V as well as 3.3 volt application using on-board regulator. The control pins include Play, Record and Erase pins.
It can be purchased from the this link.
The pin description are as follows.
1) Record — should be hold towards ground(0V from uC output) for recording sound in address selected with (A0-A4)
2) Play — 100 ms low pulse to begin playback with sound selected by address (A0-A4)
3) Erase — Erase pin 100 ms low pulse to erase sound record selected by address P03 ∼ P07. Keeping low for 3 seconds erase all the voice files.
4) Address (A0-A4) – Address selection header
Labelled pin diagram can be seen below.
Audio can be input through condenser mic.
Following Audio jack pinout and labels may also be helpful for getting started.