Bluetooth Headset Circuit Board Diagram. A block diagram of the system is described in figure 1. Underneath this left circuit board is a single cell lithium battery.
The right circuit board. The only thing you require additionally is the xs3868 module which can be purchased online. Circuit diagram like reference connections.
The left circuit board controls the battery charging and power management.
The right circuit board. Use the circuit diagram to reference for connecting the components together. For some circumstances you find that your bluetooth headset device is not working correctly or might be the wire of the bluetooth earphone maybe broken. Inside of these headphones there are two separate circuit boards.
