Tiny breathalyzer

Facelesstech posted a tiny breathalyzer project, that is available on GitHub:

A breathalyzer built around a ATtiny85 using a MQ-3 alcohol sensor displayed on a 4×7 segment display powered by a power bank. I 3d printed the body that slots over a power bank.

More details on Facelesstech blog.

Check out the video after the break.

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