Creating custom portable speakers. Bluetooth Stereo Headsets: Upgrading wired headsets.
If you are an engineer or hobbyist working with Beken chips, this file could be a valuable reference for your own designs. By using appropriate PCB design software or a free viewer, you can explore its contents and understand the layout of a real-world Bluetooth module. If you are a student or curious enthusiast, the file represents a practical example of how professional PCB designs are named and organized.
Includes a built-in battery charge controller (up to 220mA). Bk-m33-bt-v2.pcb
Beyond Bluetooth, the board often supports TF card playback, U disk (USB) music playback, and AUX input.
The .pcb extension is used by several PCB design software packages. It typically stores the complete design data, including: Creating custom portable speakers
This board is typically found in budget Bluetooth speakers (often unbranded or generic models like the TG-113 series). It acts as the "brain" of the device, handling wireless connectivity, audio decoding, and often basic amplification.
The heart of the board is usually a "black blob" (Chip-on-Board/COB) or a visible QFN chip marked with a JL identifier. This handles: By using appropriate PCB design software or a
Connect these to your amplifier stage or directly to a 3.5mm jack for line-out.
The Technical Guide to the BK-M33-BT-V2 PCB Wireless Audio Module