Title：Build a Universal Bluetooth Audio Adapter with AC6951C: RX/TX Modes, USB/TF Playback, and Hi-Res Audio Support
Project OverviewIn this project, we’ll dive deep into the AC6951C Bluetooth 5.1 transceiver module—a highly versatile and cost-effective solution for modernizing traditional audio systems. Whether you're looking to upgrade your car stereo, home speakers, or even add Bluetooth transmit functionality to your TV or amplifier, this module offers a complete audio interface with support for multiple input sources, high-quality codecs, and a user-friendly control scheme.
Features & Capabilities：
- Bluetooth 5.1 with EDR for stable and efficient audio transmission
- Dual-mode operation: Receiver (RX) and Transmitter (TX)
- Supports lossless audio formats: FLAC, APE, WAV, and more
- Digital audio inputs: Optical and Coaxial
- Local playback via USB drive and TF card
- Onboard microphone for hands-free calling
- Nixie tube display for mode and status indication
- High SNR DAC (≥95dB) and ADC (≥90dB) for clear audio
Hardware Setup：
- Power supply: 3.7V–5V (can be powered via Type-C or battery)
- Audio interfaces: 3.5mm AUX, RCA, Optical, Coaxial
- Control buttons: Power/Mode, Volume+/Next, Volume-/Previous
- Expansion: USB-A and TF card slots
Software & Control：
- No programming required for basic use—ready to use out of the box
- Can be controlled via button presses for mode switching, playback, and volume
- Pairing name: "RT06" (default)
Ideal For：
- Retrofitting old speakers with Bluetooth
- Adding Bluetooth transmit to TVs, PCs, or amplifiers
- Building a multi-source music player
- Educational projects in audio engineering and wireless communication
Tags:#Bluetooth5.1#AudioEngineering#DIYAudiophile#AC6951C#WirelessAudio#EmbeddedSystems#OpenSourceHardware#HiFi
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