HOWTO make a chattering-teeth tooth-brushing timer


#1

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#2

No clock needed to look for 2 minutes.


#3

Nice to see the 555 timer used in a situation where the Arduino would, in fact, be overkill. And people should look up Marvin Glass, the inventor of chattering teeth, fake barf, and much else. (typing his name into Google Patent search will not disappoint!)


#4

Eh. Put a banana between the teeth and then you've got something.


#5

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