BLE 4.1 Bluetooth Transmitter Stereo Audio GFSK Wireless Low Energy

Use this Bluetooth Audio Emitter to transmit audio from computers, TVs, projectors, gaming consoles, etc to bluetooth speakers or bluetooth headphones wirelessly.

Specifications:

• Bluetooth 4.1
• LED Indicator
• Range: over 33 feet (10m)
• Operating Voltage: 5V DC
• Board Dimensions: 2.4cm x 1.5cm
• The reserved serial communication port can be customized with a specified device name, specify the MAC address connection, search for the Bluetooth-compatible device name, MAC address, get the connection status, disconnect, etc., and configure the information to be powered off.
• A USB data cable is connected to the computer and enumerated into a USB sound card to launch
• Pinout:
• 5V: Power 5V
• PGND: Power Ground 0V
• LED: Status Indicator
• RX: UART Receive
• TX: UART Transmit
• IN_L :Left Audio Signal Input
• IN_R: Right Audio Signal Input
• AGND: Audio Ground
• DP: USBDP, USB data cable for connecting to computer for PC audio transmission
• DM: USBDM, USB data cable for connecting to computer for PC audio transmission
• CON: Control Key Button, External button, Low level trigger

Useful Reference: https://github.com/Mark-MDO47/BluetoothAudioTransmitter_KCX_BT_EMITTER