One day I'll find an older version of this type of unit that has the original circuitry.
It dates back a long way to when the first versions were made with discrete transistors and capacitors.
The schematic is just a rough doodle. It isn't a suggested circuit, as it would require a bit of experimentation with component values to find the sweet spot.
While the blob chips do reduce manufacturing costs significantly (it's a bare chip bonded to the PCB), it also takes some of the magic out of reverse engineering something like this.
For further exploration, the keywords on google are magnetic pendulum
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https://www.patreon.com/bigclive (extra streams and channel interaction)
Or alternatively:-
http://www.bigclive.com/coffee.htm
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#ElectronicsCreators

12 thoughts on “Lucky-cat and the curse of the blob chips”
  1. Avataaar/Circle Created with python_avatars Kelsie says:

    I have a lucky cat I bought in NYC, but the two wires connecting the battery to the circuit board came loose and because I am very bad at engineering, I need help knowing where on the circuit board to solder my black and red wire to make the kitty work again. Help?

  2. Avataaar/Circle Created with python_avatars Richard L says:

    "Let's take it to bits" Awww, poor kitty. You better hope the humane society doesn't hear you.๐Ÿ˜†

  3. Avataaar/Circle Created with python_avatars DoctorX17 says:

    I hope you reassembled the kitties after this! Bad luck may follow if notโ€ฆ

  4. Avataaar/Circle Created with python_avatars Teodor Foca says:

    why dont you try to remove the blob. Maybe you are lucky to see/recognise at least some parts of the circuit inside it.

  5. Avataaar/Circle Created with python_avatars bwDraco - Brian Wong says:

    "One moment please"… Gotta love that line.

  6. Avataaar/Circle Created with python_avatars Siden Corp. says:

    the black blob hides the magic

  7. Avataaar/Circle Created with python_avatars Brad Meek aka SilverTopFlyer says:

    I must say I am amazed that there have not been any English speaking designers from shen-zen province,to contact big Clive, you have to know they are viewing, I was in invited once to travel to a toy manufacturer there, I'm still kicking my self for not accepting.

  8. Avataaar/Circle Created with python_avatars Martin Clemesha says:

    With the addition of a flickering LED and the arm replaced with a flame shaped piece of plastic, that's very similar to how those flickering candles work.

  9. Avataaar/Circle Created with python_avatars Jacob Crosby says:

    This is really surprising to me, this seems way overbuilt…

    I would get these for my ex to decorate her car. The ones I've found are just a coil and solar panel. I think there may have been a capacitor in the loop, but I genuinely do not believe it was anything beyond the panel and coil… Is my memory deceiving me in some way perhaps? It sounded like you said there was one that was just a coil, but I wasn't certain if that's quite what you meant…

  10. Avataaar/Circle Created with python_avatars Broder Perdurabo says:

    "Let's take the rest of the pussy apart"-

  11. Avataaar/Circle Created with python_avatars LastAvailableAlias says:

    When he says "farad" it sounds like "fart". "200 hundred and 50 mega fart"

  12. Avataaar/Circle Created with python_avatars ElvirasDog says:

    Big Clive playing with a pussy. That is something I didn't think I'd ever see or hear! ๐Ÿ˜œ๐Ÿ˜„

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