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An eight ounce steak is 225g

For more information see the infographic above and/or view these tutorial videos: One filter flat against the fan (from the Washington Department of Ecology) Two filters taped with cardboard to form a triangle against the fan (from the Confederated Tribes of the Colville Reservation) If you use a DIY air cleaner, follow these safety tips: Use a newer model box fan (2012 or later) and look for one with a UL (Underwriters Laboratory) or ETL (Intertek) safety marking

In this tutorial, well explore how this amazing sensor works, how to hook it up to your Arduino, and how to start experimenting with real-time gas detection