With a bilge pump, a float switch and a little ingenuity, you can build your own working shower drain for less than $100. The ...

The Godox iT32 is a modular flash that uses magnets to connect to its hotshoe, which also doubles as a transmitter ...

Abstract: In this paper, we propose new optical cross-connect switches using ultrasonic micro motors, whose features are self-hold, precise control, and low electric power consumption. Two methods are ...