Any robot that moves needs actuators—motors that move parts of the robot around. While robot actuators have been around since the dawn of machines, they have some issues. For one, it is very difficult ...

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Simple projects like this winking rabbit are a great way to start ...

A circuit bot is a great way to introduce children to basic concepts of creating circuits. One of the most important things about circuits is that energy flows in one direction, so connecting the ...

The accuracy of the circuit can be drastically increased by making a couple of minor changes. Figure 2 shows the basic circuit. An astute reader will immediately see the two circuits’ similarities and ...

The creative new approach could lead to more energy-efficient machine-learning hardware. On a table in his lab at the University of Pennsylvania, physicist Sam Dillavou has connected an array of ...