If you have a wireless controlled garage door, a child’s toy can wirelessly open it in a few seconds. [Samy Kamkar] is a security researcher who likes to”think bad, do good”. He’s built ...

This paper reports the utilization of a large FoV UV LED array transmitter enabling a long-range UV communication system over 1.1 km. The measured data transmission rate is 1.25 Mbps using an on-off ...

Abstract: Due to its better power efficiency, pulsed modulation such as on-off keying (OOK) has the potential of maximizing ... a vertical-cavity surface-emitting laser (VCSEL) array as transmitter.

This Bluetooth audio transmitter comes in at $79, but you never have to worry about charging again as it powered totally via its USB power. Here's another Bluetooth transmitter with tons of ...