vhm_314_original_specs.txt - 0.2kb - deep.old.sector
Standard AUX output. Directly plug in headphones, AUX cables, or computer speakers.
Bookmark vacuumschmelze.com/en/downloads – their download center. Search “314” and filter by document type “Datasheet.” You will have your free PDF in under 30 seconds.
Use an isolated DC-DC converter module (such as the B0505S-1W) between your main power source and the VHM-314. Alternatively, power the Bluetooth receiver using a completely independent power source. Issue 2: Audio Distortion or Intermittent Cutouts Cause: The input voltage dropped below the required
VHM-314 Bluetooth Audio Receiver Module: Complete Datasheet and Integration Guide
Micro-USB Port: Power the module using any standard 5V USB charger or power bank.BAT Pads (+ and -): Connect a 3.7V Lithium-ion battery for portable use.3.5mm Stereo Jack: Connect directly to headphones or an amplifier input.Audio Output Pads (L, G, R): Direct soldering points for Left channel, Ground, and Right channel for permanent installations.LED Indicator: Blue light flashes during pairing and stays solid when connected. How to Use the VHM-314
Micro USB (5V) or external solder pads for a 3.7V Lithium battery Audio SNR: Total Harmonic Distortion (THD+N): Crosstalk: Transmission Distance: Up to 15 meters in open space Supported Decodes: MP3, WAV, FLAC, APE Dimensions: ElectroPeak 🔌 Interface and Controls
Power Isolation: If you experience "ground loop noise" (humming) when using the module in a car, use an isolated DC-DC power converter.Antenna Clearance: Avoid placing the module behind thick metal plates, as this will significantly reduce the Bluetooth range.No Charging Circuit: If using a battery, you must use an external TP4056 or similar charging module to recharge the battery safely.
provides a seamless bridge between Bluetooth-enabled devices (like smartphones) and wired audio systems. It is widely used in DIY Bluetooth speakers, car audio upgrades, and robotic sound systems.
Hall sensors can be slow. The VHM 314 datasheet will list the (typically 20kHz to 100kHz). If you are sensing high-frequency currents (e.g., switching power supplies at 500kHz), you need a high-bandwidth variant.
Once the LED turns solid blue, play any audio from your connected device. Connect your headphones or amplifier to the 3.5mm jack or the L/G/R pads to hear the output. Variations and Versions
The VHM-314 stands out for its low cost, compact design, and support for lossless audio. It's the perfect component for breathing wireless life into old audio gear and creating your own custom Bluetooth audio devices. We encourage you to use this guide as your reference, explore the linked resources for deeper dives, and start planning your next audio project with confidence.
Two hours later, at precisely 23.5°C, with a precision voltage reference clamped to the chip’s casing, Elara powered on the Polaris-9. The warm-up sequence whined. The CRT flickered.