elektormagazine6 天
Circuit: Ultrasonic Directive Speaker
Back in 2011, Elektor presented a DIY Ultrasonic Directive Speaker using an array of piezo ultrasonic transducers (up to 200) ...
XDA Developers on MSN6 天
7 ways an SBC can replace a mini PC
As compact as mini PCs may be, the single-board computer is often even smallerand can often replace a mini PC.