The Ting Smart Sensor quietly monitors your home wiring for potential hazards. Here's how it fared in my house.

Testing a regulator all the way down to zero volts to see how it behaves and finding an output level, below which bad things ...

Abstract: An electrochemical zinc oxide (ZnO) pH sensor is proposed and prototyped using a flexible printed circuit board (FPCB). The device is resistant to acidic and alkaline solutions and exhibits ...