The transmitter and receiver. For the transmitter, he turned an Arduino Pro Micro into a USB sound card which he could plug into his laptop.

Initially we build a transmitter and receiver to communicate between Arduinos using Morse code sent by pulses of light waves. Next, we consider digital music, which we create by switching a voltage on ...

How I found the UGreen Bluetooth 5.0 Transmitter and Receiver After losing my headphone splitter, I looked at other options for sharing audio with my wife on a plane.

This Two-in-One Bluetooth 5.0 Transmitter and Receiver lets you add Bluetooth connectivity to non-Bluetooth devices, and it’s just $25.99 (Reg. $35). Bring your old technology to the modern age .

The EVE II Bluetooth Transmitter and Receiver lets you enjoy wireless listening without upgrading old devices, and it's currently on sale for just $39.97 (reg. $59) through July 15.