Keep track of your buddy's location in the water without having to radio in and get their direction.
Project tutorial by bbtinkerer
A smart power strip to monitor current and smart power cutoff.
A miniature gaming console that lets you play snake using only an ATtiny85 and a simple I2C OLED display.
Project tutorial by Arduino “having11” Guy
With a Windows tablet, Arduino, and HC-SR04, you can create a graphical caliper to show the distance.
by Philip Ushijima
Robot that drives around autonomously in greenhouse environment and identifies diseases.
I'm guessing you mean power? If so, you could just take the nominal AC voltage and multiply it by the current sensed through the ACS712, that should be a good enough value. Or you could hookup an AC voltage sensor to be more accurate.
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