1. Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your MakerHawk Bluetooth Audio Receiver Board BT 5.0. Please read this guide thoroughly before using the product to ensure optimal performance and longevity.
2. Product Overview
The MakerHawk Bluetooth Audio Receiver Board is a compact module designed to add Bluetooth 5.0 audio streaming capabilities to various audio systems. It features a genuine Bluetooth 5.0 audio decoding chip, supporting lossless audio formats and offering a stable connection.
Key Features:
- Decoding Format: Supports WAV+APE+FLAC+MP3 lossless decoding for stereo output.
- Bluetooth 5.0: Equipped with a genuine Bluetooth 5.0 audio decoding chip.
- Voice Calls: Supports incoming voice calls.
- Computer Sound Card Function: Can be used as a computer sound card (requires specific configuration).
- Transmission Distance: Up to 15 meters in a barrier-free environment.
- Backward Compatibility: Bluetooth 5.0 is backward compatible with Bluetooth 4.2, 4.1, and 4.0.
- Power Supply: Flexible power options including USB power supply and battery power supply.
3. Setup and Connections
Follow these steps to connect your Bluetooth audio receiver board to an audio output device and power source.
3.1. Power Supply Options
The board can be powered via two methods:
- USB Power Supply: Connect a standard Micro USB cable to the USB power supply interface on the board and to a 5V USB power source (e.g., phone charger, power bank, car charger).
- Battery Power Supply: Connect a 3.7V-5V battery to the external power supply interface (BAT+ and BAT- terminals). The product has a discharge function but does not charge the battery.
Note: If the USB power supply is suddenly disconnected during playback, the Bluetooth module will automatically restart, reconnect, and attempt to maintain the previous playback state.
3.2. Audio Output Connection
Connect the audio output from the board to your desired audio system using the 3.5mm stereo dual-channel headphone audio interface or the L/G/R terminals.
- 3.5mm Audio Jack: Plug a 3.5mm audio cable into the headphone audio interface. This can connect to active speakers, car AUX inputs, or headphones.
- L/G/R Terminals: For custom installations, connect the Left (L), Ground (G), and Right (R) terminals to a power amplifier or other audio input.
3.3. Bluetooth Pairing
Once powered on, the blue LED indicator on the board will flash, indicating it is in pairing mode. On your mobile device or computer:
- Enable Bluetooth.
- Search for available devices.
- Select "BT5.0-Audio" from the list to pair.
- Once paired, the blue LED will remain solid, and you can begin streaming audio.
4. Operating Instructions
After successful pairing, your device will automatically connect to the Bluetooth audio receiver board when it is powered on and within range. You can then control audio playback (play, pause, skip tracks, volume) directly from your connected device.
4.1. Computer Sound Card Function
To use the board as a computer sound card:
- Locate the two sets of tinned pads on the back of the module corresponding to the "Sound Card" function.
- Solder these pads together to enable the sound card mode.
- Connect the board to your computer's USB port using a USB cable.
- Your computer should recognize the device as an audio output. Select it as the default playback device in your sound settings.
Note: Ensure proper soldering to avoid damage. If the computer does not recognize the device, check the connections and soldering.
5. Specifications
Detailed technical specifications for the MakerHawk Bluetooth Audio Receiver Board BT 5.0.
| Specification | Value |
|---|---|
| Product Model | BT5.0 Audio |
| Power Supply | 3.7V - 5.5V (DC) |
| SNR (Signal-to-Noise Ratio) | 90dB |
| THD+N (Total Harmonic Distortion + Noise) | -70dB |
| Crosstalk | -86dB |
| Supported Profiles | A2DP/AVCTP/AVDTP/AVRCP/HFP |
| Transmission Distance | 15m (barrier-free) |
| Decoding Format | WAV+APE+FLAC+MP3 lossless decoding, stereo output |
| Item Dimensions (L x W x H) | 1.18 x 1.18 x 0.12 inches (30 x 30 x 3 mm) |
| Item Weight | 0.388 ounces (approx. 11 grams) |
| Material | Plastic, Metal |
| Number of Channels | 2 |
| Mounting Type | Surface Mount |
6. Maintenance
To ensure the longevity and proper functioning of your Bluetooth audio receiver board, follow these maintenance guidelines:
- Cleaning: Use a dry, soft cloth to gently wipe the board. Avoid using liquids or abrasive cleaners.
- Storage: Store the board in a cool, dry place away from direct sunlight, extreme temperatures, and humidity.
- Handling: Handle the board by its edges to avoid touching the electronic components, which can be sensitive to static electricity.
- Power: Always ensure the correct voltage (3.7V-5.5V DC) is supplied. Incorrect voltage can damage the board.
7. Troubleshooting
If you encounter issues with your MakerHawk Bluetooth Audio Receiver Board, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/LED not lighting up | Incorrect power supply voltage or faulty connection. | Verify power supply is 3.7V-5.5V DC. Check USB cable and connections for damage. Ensure battery is charged if using battery power. |
| Cannot pair with device | Bluetooth not enabled on source device; board not in pairing mode; too many paired devices. | Ensure Bluetooth is enabled on your device. Restart the board to enter pairing mode (flashing blue LED). Clear old Bluetooth connections on your device. Ensure board is within 15m range. |
| No sound or low volume | Incorrect audio output connection; volume too low on source device or amplifier; faulty audio cable. | Check 3.5mm audio cable connection or L/G/R terminals. Increase volume on both the source device and the connected audio system. Test with a different audio cable. |
| Sound quality is poor or distorted | Interference; source audio quality; weak Bluetooth signal. | Move the board closer to the source device. Avoid placing the board near other electronic devices that may cause interference. Ensure the source audio file is of good quality. |
| Computer sound card function not working | Sound card pads not correctly soldered; driver issue; incorrect audio output selected. | Verify the sound card pads are correctly soldered. Check your computer's device manager for driver issues. Select the board as the default audio output in your computer's sound settings. |
8. Warranty and Support
For specific warranty information and technical support, please refer to the product packaging or contact MakerHawk customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.