Bluetooth 4.1 audio receiver XY-BT-MINI

Product detailed description

The XY-BT-MINI Bluetooth 4.1 audio receiver turns any amplifier, active speakers, car radio or old hi-fi system into a wireless device. It receives audio from a phone or computer wirelessly and provides it as a stereo signal via a 3.5mm jack and solder pads, making it easy to integrate the module into your own DIY projects. Power is supplied via a micro USB connector or solder pads for 3.7–5 V, allowing the module to run from a single Li-ion cell. After the initial pairing, it connects to the device automatically.

Specifications:

• Bluetooth Version: 4.1
• Supported Profiles: A2DP / AVCTP / AVDTP / AVRCP / HFP
• Power Supply:
  • Connector: micro USB
  • Solder Pads (BAT + / −): 3.7–5 V DC
• Output:
  • Connector: 3.5mm jack (stereo)
  • Solder pads: L / GND / R
  • Signal level: line (headphone) – without integrated power amplifier
• Audio parameters:
  • Signal-to-noise ratio (SNR): 90 dB
  • Distortion (THD+N): −70 dB
  • Crosstalk: −86 dB
  • Dynamic range (DNR): 91 dB
• Range (line of sight): more than 15 m
• Indication: status LED (pairing / connected)
• Dimensions: 29 × 38 mm
• Weight: 5 g
• Suitable accessories from our offer:
  • PAM8403 2×3W digital audio amplifier – if you want to connect passive speakers
  • L7805CV 5V 1A Stabiliser – clean power from 12 V without interference from a switching power supply
  • LaskaKit TP4056 Li-ion battery charger – for battery operation
  • 3W 4Ω 40mm Speaker – in combination with an amplifier

Important wiring notice:

• The output is line level, not power level. A speaker connected directly to L / GND / R will play very quietly. Connect the module to headphones, active speakers, or the line (AUX) input of an amplifier, radio, or car radio. For passive speakers, add a power amplifier, such as the PAM8403.
• Noise and whistling almost always originate from the power supply, not the module. Cheap switching step-down converters and low-quality power supplies introduce interference into the audio. The module plays clearly with a standard mobile phone USB charger or a linear stabiliser (L7805).
• If powering from a Li-ion cell, monitor the voltage. When the voltage drops as the battery discharges, noise will appear – the battery's protection circuit usually allows a lower voltage than the module requires for clean sound. The noise will disappear after charging.
• A shared ground with the amplifier can create a ground loop. If you power both the module and the amplifier from the same source and hear a hum, try separate power supplies or a standalone linear regulator.
• Power banks shut down automatically. The module's current draw is so low that most power banks will perceive it as a disconnected load. Use a power bank without automatic shut-off, or add a dummy load (resistor).

Package contents:

• 1× Bluetooth 4.1 Audio Receiver XY-BT-MINI

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.