So for twelve years, she was Vhm-314. She answered to it. She ate her nutrient paste as Vhm-314. She watched her fellow Custodians—Vhm-089, Vhm-902—die of radiation leaks or simply vanish into the reclamation vats, their designations retired like faulty equipment.
You must identify the SPI (Serial Peripheral Interface) pins on the VHM-314 board—specifically SPI_CS, SPI_CLK, SPI_MISO, SPI_MOSI, and GND. These are often tiny pads on the PCB.
The lack of a clear, consistent naming scheme leads to several real-world frustrations. For multi-room setups, having several identical VHM-314 modules appears as multiple generic devices, making it nearly impossible to tell which speaker is which. This confusion is amplified in shared settings like a workshop or lab. Furthermore, if you ever sell or pass on a project built with a VHM-314, the next user will face the same cryptic name. This is a common issue with all low-cost, mass-produced Bluetooth modules.
Do not change the overall file size of the .bin image. If your new name is shorter than "VHM-314" (7 characters), fill the remaining empty character slots with null bytes ( 00 in hex). If your new name is longer, ensure you do not overwrite critical adjacent code bytes, or the board will crash. Vhm-314 Change Name
Certain premium or modified versions of the VHM-314 board come pre-flashed with custom firmware that supports . If you purchased a variant advertised as "AT command controllable" or "programmable," you can skip complex hardware flashing. Via Physical UART Hookup:
Similarly, the module’s is always “VHM‑314” regardless of the seller. Even when the same physical board is sold under a different brand name, its model designation does not change.
If you need to change the name permanently for all users (e.g., changing " So for twelve years, she was Vhm-314
Find the small 8-pin surface-mount IC adjacent to the main Bluetooth SOC. It is typically a 24C-series or 25-series EEPROM/Flash chip.
If your project includes a microcontroller—such as an Arduino, ESP32, or Raspberry Pi—you can implement an electronic mask that rebrands how your master device interacts with the VHM-314, or use a micro-controller to intercept the pairing flow. Bluetooth Alias Mapping
Smartphone Bluetooth cache has stored the MAC address profile. The lack of a clear, consistent naming scheme
Consider the notorious case of a failed antidepressant initially coded “BMS-123.” After a licensing deal, it became “Orex-7,” then later “Neudapta” before trials revealed hepatotoxicity. The string of name changes obscured its troubled past. Conversely, the successful drug now known as “Lyrica” began as “CI-1008” (Parke-Davis), then “PD-144723,” before earning its generic name “pregabalin.” Each name change marked a step toward the clinic.
The VHM‑314 is a product of the global low‑cost electronics ecosystem. It is manufactured by several different Chinese companies (Zhanrui Electronics, Shenzhen Qianhai Ku Xian Sheng Industrial, and others). These companies are not incentivised to add user‑configurable naming; the module’s selling point is its price, not its features. As long as the VHM‑314 continues to be sold for under $5, it is highly unlikely that any manufacturer will invest the engineering effort to add a configuration interface.
If you are stuck with several VHM‑314 modules and cannot rename them, there are a few practical workarounds: