Pre-recorded chip-on-board circuits

Discussion in 'The Projects Forum' started by Otaku, Sep 1, 2009.

  1. Otaku

    Thread Starter Active Member

    Nov 19, 2008
    128
    2
    Hi all,
    I was wondering if there is a way to overwrite a pre-recorded sound on a COB circuit. The ones I'm referring to are those that you find in talking toys, greeting cards etc. I'd like to be able to upload a new soundtrack to the chip using a computer sound card. I searched the project forum for any references to this, but nothing came up. Has anyone tried doing this or know of a way to do it? Thanks!
     
  2. Mike2545

    Active Member

    Mar 26, 2009
    116
    3
    As far as I know It can't be done, especially with a computer sound card.
     
  3. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    5,685
    900
    Just buy one of the newer cards that let you record your own message. Same price. Look in the birthday section. John
     
  4. jj_alukkas

    Well-Known Member

    Jan 8, 2009
    751
    5
    You can't overwrite that because they are built on cheap ROM memory with write once capability. Once they are flashed, it is as it is. They do it for mass production.

    If you are looking for a recordable chip, try CVM60. It is a 26 pin digital 60 seconds voice recorder + player chip. You can record again and again from your sound card or your mic. It requires only a few resistors and capacitors to support it.
     
  5. Chug

    New Member

    Aug 26, 2009
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    Where can one buy a CVM60?

    Bob
     
  6. Otaku

    Thread Starter Active Member

    Nov 19, 2008
    128
    2
    I thought this might be the case. Thanks to all for the replies.
     
  7. jj_alukkas

    Well-Known Member

    Jan 8, 2009
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  8. HarveyH42

    Active Member

    Jul 22, 2007
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  9. mkbutan

    Senior Member

    Sep 30, 2008
    270
    16
    In Mumbai/India you can buy it from lamengton road
    these are known as VOICE RECORDABLE IC's. from 15 Sec. to approx 1 hr.
    in early 90's there was one ic by ISBN series (may be)-10XX where XX stands for sec.'s/Min's
     
  10. Chug

    New Member

    Aug 26, 2009
    3
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    Thanks JJ.

    Bob
     
  11. jj_alukkas

    Well-Known Member

    Jan 8, 2009
    751
    5
    I think thats was my second link.
     
  12. mkbutan

    Senior Member

    Sep 30, 2008
    270
    16



    thanks for the link i have not seen it yesterday
    i have this ckt since when i was in school in NEW DELHI i was a regular reader of the magazine ELECTRO INDIA ELECTRONICS & ELECTRONICS FOR YOU till to day
    but unfortunately i did not got the ISD 1XXX was not available in INDIA
    but now it is available in BOMBAY with APLUS for 10 Sec's. to 16 Min's. in the form of IC's & Cob's. in SANTACRUZ but as a voice recordable IC's not with the ISD series
     
  13. jj_alukkas

    Well-Known Member

    Jan 8, 2009
    751
    5
    I too used to read the EFY and electronics maker a lot.
     
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