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Engineer turns disposable vape pen into a working web server
(interestingengineering.com)
This is a most excellent place for technology news and articles.
There is a little more to it, pressing the button 5 times turns it on and off. Three times often lets one cycle through power settings. But yeah, anything more than a very minimal programming is frankly suspicious.
It could be a lot is used to get the charge right idk.