Monday, February 24, 2014

How a breathalyzer works (alcohol sensor)

I teardown a commercial, handheld breathalyzer and discuss how it works, then test a standalone ethanol sensor.

Monday, February 10, 2014

Self-cleaning glass windows

Alien technology?  No!  A thin coating of titanium dioxide on your windows will use the UV in sunlight to burn away dirt and wash itself clean with rainwater.