VOICE RECORDER AND PLAY BACK MODULE(ISD 1700)

VOICE RECORDER AND PLAYBACK MODULE

Voice recorder and playback module is a made
for the purpose of recording those messages and playback which required
frequently at some places like platform, train, instruction, mobile, etc. When I
started to work on this project I was not able to find some easy instruction to
made one for me. So I decided to put it on my blogs so that other can made this
one easily.

Now a my voice recorder module is based on IC
ISD17XX/1720 which is DIP package and 2.4-5 volt operating voltage. It is a multi-message
voice record. It can be operated standalone or by microcontroller(SPI) mode.
Recording are stored into on-chip flash memory, providing zero power message
storage.

In the spi mode , the user has full control via
serial interface to operate the device Now here is the pin diagram of the
ISD1700

ISD 1720 PIN diagram

ISD1700 pin description:

PINDESCRIPTION

Modes of operation –There are two modes of operation Standalone (push button control) and
microcontroller (SPI) mode.

·        Standalone
(push button) mode-

          We can use
this mode by REC,PLAY, FWD, Erase, VOL, RESET. To control desired operation.                       After
completion of operation its automatically goes into power down mode.

·               SPI mode

           In SPI mode
control of the device is achieved by 4 wire serial interface via SPI commands.

NOTE:- FOR MORE DETAIL PLEASE LOOK
THE DATA SHEET OF THIS IC.  CLICK HEAR

Now
the circuit:

CIRCUIT OF VOICE RECORDER

VOICE RECORDER AND PLAYBACK

INSTRUCTIONS- Here are some instruction which should be taken
care at the time of using the module.

• ·       Recording- To record a new sound please press
  the REC button and hold till that time you want to record. LED blow till
  button is press


• ·       Play Back- To play back the message just press
  the button PLAY . Led will blink till message play.


• ·       Forward- For forwarding to next message just
  press the FWD button. The LED will blink only once


• ·       Volume- To increase or decrease the volume
  press VOL button.


• 
  


• ·       Erase – To erase the track just press the erase
  button. If want to erase all then press it for very long time .                     

#####################GOOD LUCK#########################