Since a generic search fails, use these forensic engineering steps to find the exact spec sheet you need.
A free datasheet exists for 99% of components, but only if you have the correct part number . The VHM 314 is almost certainly a mislabeled standard part (likely the A3144 Hall sensor ).
Bluetooth mode active; searching for a device to pair. vhm 314 datasheet free
The module has several iterations with slight hardware differences: Bluetooth audio - Raspberry Pi Official Magazine
Here is the reality check—and the roadmap to finding your answer. Since a generic search fails, use these forensic
The VHM-314 is a versatile, low-cost Bluetooth 5.0 audio receiver module featuring a 3.5mm stereo output and supporting lossless audio formats, with operating voltages between 3.7V and 5V. Available in multiple iterations, the board is commonly used for DIY audio projects and features an onboard LED to indicate pairing status. Access the technical specifications and documentation in this datasheet .
Providing audio feedback or voice synthesis for robots. Bluetooth mode active; searching for a device to pair
If you are looking for a compact, efficient, and affordable way to add Bluetooth connectivity to your audio projects, the VHM-314 is an excellent choice. This module is widely used in DIY audio, car audio conversions, and speaker upgrades.
Once paired, the blue LED will stop flashing and remain on, indicating successful connection.
+---------------------+ +-----------------------+ | | | Car Stereo (Head | | VHM-314 Module | | Unit) | | | | | | (Power Source) | | +5V DC Power Source | | +5V ------------+------>| (e.g., USB port, | | GND ------------+------>| internal regulator)| | | | | | (Audio Output) | | AUX Input | | Audio L ----------+------>| Audio L | | Audio R ----------+------>| Audio R | | Audio GND --------+------>| Audio GND | +---------------------+ +-----------------------+
This comprehensive technical guide serves as a complete datasheet and implementation resource, covering technical specifications, wiring configurations, and hardware troubleshooting for DIY audio designs. Core Technical Specifications