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 .                     

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