Dismantling Digivice

Discussion in 'The Projects Forum' started by nucleofart, Jun 11, 2011.

  1. nucleofart

    Thread Starter New Member

    Jun 11, 2011
    2
    0
    Hello guys,

    Just recently i got into the digimon craze again and now that im older im wondering how it worked. So then i decided to dismantle it. However, im not too sure what each of the pieces are of the circuit.

    I'm not exactly very well versed in circuits so do go easy on me. However i'll really appreciate if some explanation of what part is. The link of the photos are below.

    http://img.photobucket.com/albums/v104/nerdyslacker/DSCF0013.jpg

    I - should be for the 3 button pressing
    F -was behind the LED screen but I don't exactly know what's this blob.
    H & G -> These 2 i'm really curious about it.
    I zoomed it for the next image.

    http://img.photobucket.com/albums/v104/nerdyslacker/DSCF0016.jpg

    http://img.photobucket.com/albums/v104/nerdyslacker/DSCF0026.jpg

    A- I'm guessing is some kind of fuse?
    C- from my other digivice i know its for reading the batteries.
    D- is for the battle with other digivice
    B & E - I got no idea what they're for. E is actually connected to these circular thing below. I'm guessing its for the sound?

    http://img.photobucket.com/albums/v104/nerdyslacker/DSCF0029.jpg

    One major thing I was wondering is where all the data was actually stored. & is it possible to actually view the data inside whereever it is stored?

    Thanks guys. Really appreciate it.
     
  2. KJ6EAD

    Senior Member

    Apr 30, 2011
    1,425
    363
    A: Electrolytic capacitor prevents supply voltage from sagging too low and causing resets when a high current transient operation occurs.

    B: Quartz crystal, a frequency standard that controls the clock frequency of the microcontroller.

    C: Battery contacts.

    D: Contact for case mounted feature such as a display backlight or EMI shield.

    E: Output to piezo transducer (beeper).

    F: Chip-on-board (COB) integrated circuit controls all functions of device.

    G: 4 chip capacitors and 2 100 Ohm chip resistors.

    H: Small signal diodes.

    I: Switch contacts.

    It's inside the COB and would be possible to read if it's in non-volatile flash memory. It's more likely that it used volatile CMOS memory and was lost when the batteries were removed or died. You won't get the pinout for the COB from the maker but it's possible that some hacker has reverse engineered it enough to interface to a computer.
     
    Last edited: Jun 11, 2011
  3. nucleofart

    Thread Starter New Member

    Jun 11, 2011
    2
    0
    thank you very much! :D