Originally published at: http://boingboing.net/2017/07/03/this-guy-built-a-storage-ottom.html …
Also from Evil Mad Scientist: The giant functional 555 timer made from discrete components:
It's only a 555 if it says it's a 555 on top. It could easily be any 8-pin DIP integrated circuit: just paint something else on it; e.g. it could be the classic 741 op amp:
Get all of Forrest Mims' books. They are all solid gold.
There's a great video of Dave Jones building one of those giant 555 timer kits and then explaining theory and operation.
Dave is so great! I love EEVblog!
While the last one with the cat on it is cool looking, it is WAY too small for my cats.
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