We’ve all seen these sensors and modules kicking around, as part of beginner kits, strapped into prototypes and potentially even in products deployed in the field. Yet as [John Teel] ...

Why passive ultrasonic offers a unique option of sensing discrete open/close events. How a team used passive, non-electronic metal tag for signal initialization. How they used DSP-based, non-ML, ...

Invisible wearable sensors might sound like a sci-fi dream, but it’s one that is coming closer to a commercial reality. In the past decade, scientists have created numerous transparent wearable ...