Method 1: Editing the EEPROM via I2C (Hardware Modification)
Connect your USB-to-TTL adapter to the board. The tool should display a "Connected" status once the module is powered on. Reading Values:
: Some newer VHM-314 versions (like those with a Type-C port) may theoretically support basic configuration via USB if the chip firmware allows it, though this is not a standard feature and often requires manufacturer-specific configuration software.
If the technical barrier or tool cost of editing the firmware is too high, consider these practical workarounds:
The VHM-314 is a highly popular, low-cost Bluetooth 5.0 audio receiver board used extensively in DIY electronics and audio modification projects. By default, when you power on the board and search for it on your smartphone or computer, it broadcasts a generic Service Set Identifier (SSID) or Bluetooth device name, typically .
Control-click (right-click) on the entry in the list of paired devices. Select Rename from the contextual dropdown menu. Type your custom name and confirm the prompt. Technical Limitations and Best Practices
for connecting a serial adapter to your version of the VHM-314?
Some variants of these modules support AT commands if you connect a serial bridge (like an Arduino) to the TX/RX pins. AT+NAME[NewName] Response: The module should return OK if successful. Summary Table of Methods Complexity Tools Needed Phone Settings This device only Windows Control Panel This PC only AT Commands USB-TTL Adapter/Arduino CSR PSTool CSR Programmer
Tap the next to the connected "VHM-314" device profile. Tap the Edit/Pencil icon in the top right corner. Input your custom name and hit Save . On Apple macOS: Open System Settings and go to Bluetooth .
While you cannot usually change the name broadcasting from the chip itself , you can change how it appears on your smartphone or computer. This is the only practical method for 99% of VHM-314 users. On Android
Some older or alternative versions of the VHM-314 use an external SPI Flash memory chip (an 8-pin IC, usually a 25X40 or similar series) alongside the main controller. If your board has this layout, the Bluetooth name string is stored directly inside this flash memory. Step-by-Step Instructions
Before attempting any hardware modifications, it is crucial to understand the chips powering the VHM-314. The board typically relies on one of two highly integrated Bluetooth audio SOCs (System on a Chip): (e.g., AC692X, AC695X) Asolid / Bluetrum chips
For users seeking a zero-risk setup, software aliasing provides the exact same visual result on your primary devices without touching a soldering iron. For advanced developers and makers building commercial products out of the VHM-314, setting up a JieLi flashing environment or editing the 24C02 EEPROM is the only way to hardcode a permanent identity directly onto the hardware.
While changing the broadcast identity of a VHM-314 requires a bit of hands-on technical effort, it elevates your custom audio builds to a professional standard. Utilizing either a basic USB-to-UART adapter or a hardware flash programmer unlocks complete control over this high-utility, budget-friendly Bluetooth module.
VHM-314 first emerged from preclinical labs as a novel small molecule targeting a specific subset of G-protein coupled receptors (GPCRs) implicated in chronic neuropathic pain and anxiety disorders. Early data suggested that unlike opioids, which carry high addiction risk, VHM-314 offered a non-addictive pathway to analgesia. Under its developmental code—VHM-314 (likely derived from its originating lab or company, VHM Biosciences, and compound series #314)—it navigated in vitro assays and animal models.
HC-05 Bluetooth Module | Change Name and Password | AT Commands
If customizable broadcast names, passwords, and custom audio prompts are critical to your project, consider upgrading to a Bluetooth module built on the Qualcomm CSR8645/CSR8675 or ESP32 chipsets. These modules are explicitly designed to be configured via simple AT commands or user-friendly software utilities.