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Automatic Pet Feeder

Automatic Pet Feeder

I am going to teach you how to properly set up an Arduino for this configuration and explain some basic programming. I am also going to explain to people how to build the system in a few simple steps.

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iStand

iStand

The iPad, wonderful as it is, often needs a stand to hold it. Sure, there are tons available, but they can be flimsy and/or expensive. Here’s one that’s cheap, sturdy, and easy to build. It’ll hold either the original iPad or the iPad 2 in many useful positions. It’s made from ¼”-thick clear or smoked […]

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NASA MAKE Challenge 2011 Winner: “Bring It Back” Microgravity Kit

NASA MAKE Challenge 2011 Winner: “Bring It Back” Microgravity Kit

“Bring It Back” Microgravity Kit by Prashant Rao & Subra Sankaran Prashant Rao, Ph.D., Principal Engineer, Barrios/Jacobs/ESCG Subra Sankaran, Ph.D., Senior Thermal Specialist, MEIT/Jacobs/ESCG at NASA JSC, 2224 Bay Area Blvd, Houston TX 77058 Three experiments are described here (with suggestions for additional experiments) that use molten wax in different setups to demonstrate important principles […]

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Wind Lantern

Wind Lantern

In this project, we’ll build a small, vertical-axis wind turbine, or VAWT for short. These are not as efficient as their horizontal-axis cousins, but they are better suited to urban environments where wind can come from all different directions. Normally, when you give electricity to a motor, it spins. The same is true in reverse: […]

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