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[mister_e]

for two minutes... you'll probably need a Flash Card instead or use few 24LC512 on the same I2C bus. For 2 minutes i would suggest to use any ISD chip as i previously suggest.

Basically you may record the Wav file in your computer with a decent Sampling rate, rename it as .BIN then dump it to your EEPROM. Knowing the file size, you'll know the EEPROM size...

The wav output is pretty simple, you will read your EEPROM, send it to DAC. It could be as simple as a resistor network and a OP-amp

Now, you can also use the same method but use MP3 format instead and use a MP3 decoder IC like VS1001K

Or if you have some guts, you may try the following
http://www.romanblack.com/picsound.htm

good luck!

[Acetronics2]

Hi,

Here to find an oldie : http://www.speechchips.com/shop/

Yesss ... the SPO 256 !!! Hatari !!!

just REALLY easy to use ... now, may be difficult to find, but worth it !!!

Alain

[mister_e]

Yup that's an oldie... how about finding an old Texas Instrumens ti-99/4a speech module

If it's just human words, there's probably some text-to-speech ICs somehow somewhere over the web... sure it must exist. If my memory is good Winbond do some.. but... DUH! Google!

EDIT: nice link Alain..

[Acetronics2]

Hi, Steve

My HP86 with all its peripherals is still alive ...

Ti doesn't speak HP language !!! No Ti home ...

Still useful at home: Unicom 202SR , HP29 ... and the first HP Scientific calculator !!! ( The model 34 ? )

Winbond = $$$$$$ ...

maybe, if not too much words used, an ISD could be used here ...

Cheers, Alain

PS: I found another juke-box "asm include" program ... straight from HTTTP format !!! converter utility comes with.

[Bakari]

Dear members,

Thanks a lot for your support. In fact I have started with the suggestions of mister_e to use ISD4002 with PIC16F877. In fact, while I am reading about it, I faced a lot of difficulties in the part of programming it and interfacing it with PIC16F877. Therefore, it will be great if you provide me with an illustration about these points and detailed steps for recording and playing saved voice messages.

Best regards,

Bakari

[Bakari]

Dear Members,

Can any body show me the connection between PIC16F877 and ISD4002. I connected them and nothing is working. I have decided to start the troubleshooting with the connection. My connection was as follow (both have ICs DIP pachaging):

PIC16F877 ISD4002

Pin 18 Pin 28

Pin 23 Pin3

Pin 24 Pin 2

Pin 1 in ISD4002 is connected to ground because I need it always in slave mode. Pin 7 in PIC16F877 is connected to Vcc since I need it always in master mode.

Looking for any help.

Best regards,
Bakari

[mister_e]

To make things simple, you'll need to use SHIFTIN/SHIFTOUT in PBP. so it doesn't really matter the PIC I/O you use.

A while back i used a PIC16F628, Bellow is the hardware assignement i used.

    ' I/O Definition
    ' ===============
    '
    TRISA = %00110000    ' PORTA Output on :
                         '         PORTA<3:0> : LCD data 
                         '         PORTA<7:6> : LCD RS & E bit
                         '
                         ' PORTA Input on :
                         '         PORTA.4 : "ALT PLAY" Button
                         '         PORTA.5 : "PLAY" button    
                         '
    TRISB = %11110001    ' PORTB Output on : 
                         '         PORTB.1 : ISD4002 SS pin 
                         '         PORTB.2 : ISD4002 SCLK pin 
                         '         PORTB.3 : ISD4002 MOSI pin
                         '
                         ' PORTB Input on :
                         '         PORTB.0 : ISD4002 INT pin
                         '         PORTB.4 : ISD4002 MISO pin
                         '         PORTB.5 : ISD4002 RAC pin
                         '         PORTB.6 : "SETUP" button
                         '         PORTB.7 : "RECORD" button

Later to write to the ISD chip, i used

    ss = 0
    shiftout MOSI,SCLK,LSBFIRST,[ISDword\16]
    ss = 1

to read from

        ss=0
        shiftin miso,sclk,lsbpre,[isdpointer\16]
        ss=1

HTH