ICANING Bluetooth 5.0 MP3 Decoder Board 50W Amplifier

1. Introduction

This manual provides detailed instructions for the ICANING Bluetooth 5.0 MP3 Decoder Board, a versatile digital audio module designed for DIY enthusiasts. It integrates Bluetooth 5.0 connectivity, MP3/WMA/WAV/APE/FLAC decoding, a 50W stereo amplifier, USB and TF card playback, AUX input, and FM radio functionality. This module is ideal for upgrading existing audio systems or building new custom speakers with modern audio capabilities.

Figure 1: ICANING MP3 Decoder Board (Silver variant) with remote control and connection wires.

2. Key Features

• Power Supply: Operates on 5V-12V DC.
• Audio Decoding: Supports MP3, WMA, WAV, APE, FLAC formats.
• Amplifier: Built-in stereo power amplifier with 2 * 25W balanced output.
• Connectivity: Bluetooth 5.0 for wireless audio streaming.
• Media Playback: USB drive and TF (Micro SD) card support.
• Inputs: AUX input for external audio sources.
• Radio: FM radio with a frequency range of 87.5~108MHz.
• Recording: Supports external recording (requires TF or USB storage).
• Folder Selection: Allows selection and playback from folders on USB/TF.
• Memory Function: Remembers last played song and volume settings after power off.
• Automatic Switching: Seamless switching between USB/TF/Bluetooth/Radio/AUX modes.
• Signal to Noise Ratio: ≥ 70dB.

3. Package Contents

• 1x MP3 Decoder Board (Host)
• 3x 2-Pin Power Cords (for power input and speaker outputs)
• 1x 1-Pin Radio Antenna Wire
• 1x Remote Control (may vary by variant)

4. Technical Specifications

5. Setup and Wiring

Careful wiring is essential for proper function and to prevent damage. Refer to the diagram below for connection points.

Figure 2: Rear view of the decoder board with labeled connection points.

5.1. Power Connection

• Main Power Input (DC 5V-12V): Connect your 5V-12V DC power supply to the 2-pin connector labeled 'DC 5V-12V'. Ensure correct polarity (+ and -).
• Alternative 5V Input (DC 5V IN): A Micro USB port labeled 'DC 5V IN' is available for a 5V power source. This can be used as an alternative or supplementary 5V input.
• Battery Input (BAT): A 2-pin connector labeled 'BAT' is available, typically for a 3.7V battery. Use with caution and ensure proper battery management if integrating.

5.2. Speaker Output

• Left Speaker: Connect your left speaker to the 2-pin connector labeled 'L-' and 'L+'.
• Right Speaker: Connect your right speaker to the 2-pin connector labeled 'R-' and 'R+'.
• Ensure speakers are compatible with the 25W output per channel.

5.3. Audio Input (AUX)

• AUX IN: Connect external audio devices (e.g., smartphone, CD player) using a 3-pin connector to the 'AUX IN' port (L-GND-R).

5.4. FM Antenna

• FM ANT: Connect the provided 1-pin radio antenna wire to the 'FM ANT' port for improved FM radio reception. Extend the wire for better signal.

5.5. Microphone Input (MIC)

• MIC: A 2-pin connector labeled 'MIC' is available for connecting an external microphone for recording functionality.

6. Operating Instructions

The decoder board can be operated using the onboard buttons or the included remote control.

Figure 3: Front panel of the decoder board.

6.1. Button Functions

• OFF/ON: Power on/off switch.
• PREV/VOL -:
  • Short press: Select previous track/radio station (in USB/TF/Bluetooth/Radio mode).
  • Long press: Decrease volume.
• PLAY/PAU:
  • Short press: Play/Pause (in USB/TF/Bluetooth mode).
  • Long press: Switch modes (Bluetooth, TF, USB, FM, AUX).
• NEXT/VOL +:
  • Short press: Select next track/radio station (in USB/TF/Bluetooth/Radio mode).
  • Long press: Increase volume.
• MODE: Short press to cycle through modes: Bluetooth → TF → USB → FM → AUX.
• SCAN: (Typically for FM radio) Short press to auto-scan and save FM stations.

6.2. Bluetooth Mode

1. Switch the module to Bluetooth mode using the 'MODE' button. The display will show 'BT' or 'Bluetooth'.
2. On your smartphone or Bluetooth device, search for available devices. The module will appear as "BT-SPEAKER".
3. Select "BT-SPEAKER" to pair. Once paired, you can stream audio wirelessly.

Figure 4: Bluetooth pairing with a smartphone.

6.3. USB/TF Card Playback

1. Insert a USB drive into the USB port or a TF card into the TF slot.
2. The module will automatically switch to USB or TF mode and begin playing audio files.
3. Use 'PREV/VOL -' and 'NEXT/VOL +' to navigate tracks.
4. Long press 'PLAY/PAU' to switch modes if it doesn't switch automatically.
5. Supports folder selection and playback.

6.4. FM Radio

1. Switch the module to FM mode using the 'MODE' button.
2. Short press the 'SCAN' button to automatically search for and save available radio stations.
3. Use 'PREV/VOL -' and 'NEXT/VOL +' to switch between saved stations.

6.5. AUX Input

1. Connect your external audio device to the 'AUX IN' port.
2. Switch the module to AUX mode using the 'MODE' button.
3. Audio from the external device will now play through the module. Volume control is handled by the module and the external device.

6.6. Recording Function

1. Ensure a USB drive or TF card is connected to the module.
2. Connect an external microphone to the 'MIC' port.
3. In TF or USB mode, long press and hold the 'MODE' button to start recording.
4. Long press the 'MODE' button again to stop recording and play back the recorded file.

7. User Tips

• Power Supply: This module operates on 5V-12V DC. It is NOT designed to connect directly to 220V AC household power. Always use an appropriate DC power adapter within the specified voltage range.
• FM Reception: For optimal FM radio reception, ensure the antenna wire is fully extended and positioned away from other electronics that might cause interference.
• Recording: When recording, make sure your USB drive or TF card has sufficient free space.
• Bluetooth Hands-free: The built-in Bluetooth capability supports hands-free phone operation, allowing you to keep your hands on the steering wheel if used in a vehicle.

Figure 5: Hands-free Bluetooth function in a car environment.

8. Troubleshooting

No Power / Module Not Turning On:

Check the power supply connection. Ensure it is within the 5V-12V DC range and polarity is correct. Verify the power source is active.

No Sound Output:

Check speaker connections for correct wiring and polarity. Ensure the volume is turned up on both the module and the source device (if using AUX). Verify the correct mode (Bluetooth, USB, TF, AUX) is selected.

Bluetooth Not Connecting:

Ensure the module is in Bluetooth mode. Make sure your device's Bluetooth is enabled and it's searching for new devices. Try forgetting "BT-SPEAKER" on your device and re-pairing. Ensure no other device is currently connected to the module.

FM Radio Poor Reception:

Ensure the FM antenna wire is properly connected and fully extended. Try repositioning the antenna for better signal. Perform an auto-scan again.

Recording Not Working:

Verify that a USB drive or TF card is inserted and has free space. Ensure the microphone is properly connected to the 'MIC' port. Recording only works in TF or USB mode.

Module Does Not Support 220V:

This device is designed for low-voltage DC input (5V-12V). Connecting it directly to 220V AC will cause severe damage and is a safety hazard. Always use an appropriate DC power adapter.

9. Maintenance

• Cleaning: Use a soft, dry cloth to clean the surface of the module. Do not use liquid cleaners or solvents.
• Storage: Store the module in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Avoid dropping or subjecting the module to strong impacts.
• Power Off: Always power off the module when not in use for extended periods.

10. Warranty and Support

For warranty information and technical support, please refer to the seller's policies or contact the ICANING Global Store directly. Keep your purchase receipt as proof of purchase.