Introduction 

 KCX_BT006 is a multi-purpose Bluetooth audio module integrating Bluetooth audio and Bluetooth calling. It supports matching various smart phone players on the market to play music, and supports functions such as voice reporting of incoming calls and voice calls. Just by implanting this decoder board into your product, you can upgrade ordinary wired audio products to wireless Bluetooth audio products.

typical application 

 ● Home speakers changed to Bluetooth speakers 

 ● Speaker repair and upgrade 

 ● Car player modification and upgrade 

 ● Computer speaker modification and upgrade

Features and Advantages 

 ● Excellent durability and coexistence 

 ● Ensure the stability of Bluetooth transmission through a variety of technologies 

 ● Intuitive LED indication 

 ● Caller voice number report, voice call 

 ● Wireless transmission distance ≥ 10 meters

Bluetooth connection and pairing operation and instructions 

 Power on the module (solder the battery on the back of the board or supply power through the USB interface), turn on the power switch, the bluetooth status indicator flashes at this time, indicating that bluetooth is searching for devices, turn on the bluetooth switch of the mobile phone, and search for nearby bluetooth devices after a few seconds. After the device named "Bluetooth Audio" is a Bluetooth device, click connect on the mobile phone to connect to the mobile phone's Bluetooth. After the connection is made, the Bluetooth status indicator will be on for a long time. At this time, open the player of the mobile phone to play music, and the music on the mobile phone can be wirelessly transmitted to the Bluetooth module through Bluetooth. During the process of playing music, the Bluetooth indicator flashes twice within 2 seconds.

Voice calls 

 When the mobile phone connected to the Bluetooth module has an incoming call, the module will send out a voice broadcast to broadcast the caller number of the other party. After the call is connected, the audio signal of the call comes from the electret microphone on the Bluetooth board. Of course, you can also switch to the phone to answer or the Bluetooth module to answer at will during the call.

Interface Specifications and Device Descriptions 

 ● Audio output interface 

 The audio output interface of this Bluetooth board is a 3.5mm/3-port universal audio interface, which can directly connect and drive a universal audio headset (some 4-port mobile phone special earphones require a conversion interface, and the difference between the 3-port earphone interface and the 4-port mobile phone special earphone interface is specific. It can be Baidu), or it can be input to the active speaker as the sound source of the active speaker. 

 ● Onboard MIC 

 This Bluetooth board has an electret microphone onboard, which is used to pick up voice during Bluetooth voice calls. If you need to put the board into the casing, you need to reserve a small hole in front of the MIC of the casing to allow the sound to enter through the small hole. to MIC. 

 ● USB charging/power supply interface 

 This Bluetooth board uses the MINI USB interface to supply power or charge the battery (if there is a battery connected). 

 ● Power switch 

 The power switch controls the power on and off of the Bluetooth. Toggle it to the left (near the USB port) to turn it off, and toggle it to the right (near the LED) to turn it on. 

 ● Charging indicator 

 The charging indicator is used to indicate the charging status of the battery. During the charging process, the indicator is on and off when fully charged. The preset charging current is 200mA. The charging time varies according to the capacity of the connected battery. If in the power-on state, because there is current flowing through the charging circuit, the charging indicator light will always be on, which is a normal phenomenon. Charge the battery as much as possible with the power off. 

 ● Bluetooth status indicator 

 The bluetooth status indicator is used to indicate the working status of bluetooth 

 ● Pairing: LED flashes quickly (250ms on and off) 

 ● MP3 playing: LED flashes slowly (on for 500ms and off for 500ms) 

 ● Pause state: LED is always on 

 ● During Bluetooth playback: LED flashes twice every 2s 

 ● Battery connection port (back of board) 

 The solder joints on the back of the board are used to solder the battery wires. The external battery is a 3.7V lithium battery or a polymer battery. The capacity selection should be between 200mAh and 500mAh. The 200mAh battery can be used for about 5 hours. around 12 hours.