FM Bluetooth Amplifier Audio Speaker

Introduction

It is an FM Bluetooth Amplifier Audio Speaker DIY Kit with an Infrared Remote Control. It can play music from FM radio, Bluetooth, AUX, U-disk, and SD cards,, and the 3W 4ohm speakers produce clear and loud sound. The user can also control the play status or select the audio source by infrared an infrared remote controller. This DIY electronic product is an intriguing way for users to gain a better understanding of circuits and develop their soldering skills.

Specifications

Product Name: FM Bluetooth Amplifier Audio Speaker DIY Kit
Work Voltage: DC 4.2V
Speaker: 3W 4ohm
Channel: Dual-Channel Stereo
Audio source : Bluetooth/FM/AUX/U-disk/SD Card
FM station: Automatic radio search
Receiver Frequency:87.0MHz~108.0MHz
Frequency accuracy:0.1MHz
Control Type: Bluetooth/Remote Controller/On Board Button 12>.Output type: Speaker
Audio format: MP3
Power interface: DC-005 Power Socket
Work Temperature:-20℃~85℃
Work Humidity:5%~85%RH
Size(Installed):104*76*75mm

Feature

Multi-Audio Source Selectable: This device offers a variety of audio input options, including Bluetooth, FM, AUX, U-disk, and SD Card, enabling the playback of MP3 or lossless music files with a screen display indicating the current audio source. Users can control the music playback functions such as play/pause/next/prev/vol+/vol- using either the remote controller or on-board buttons.
Bluetooth Player : With its built-in Bluetooth audio receiver and power amplifier, this device can directly drive 4-ohm 3W speakers, producing clear and high-quality sound.
Dual Channel Stereo Speaker: The device can drive two 2.0 3W*2 speakers, producing clear and powerful stereo sound.
Rechargeable: It is powered by a 4.2V lithium battery, which can be used as an outdoor mobile speaker. The built-in charging module is also more convenient for battery charging.
DIY Hand Soldering: This is a DIY kit that comes with various components, and users need to install each component by hand. This process not only enhances soldering skills but also fosters an interest in electronic technology. It's an excellent option for electronics hobbyists, beginners, as well as school and home education.

Use Methods

ON/OFF Power
1. Turn ON the work voltage if the Toggle Switch turns to ON/right status.
2. Turn OFF the work voltage if the Toggle Switch turns to OFF/left status. Note: it just turns off the screen and speaker, but it is still working and continuously slightly depleting battery power.
MP3 Mode
- Insert a U-disk or SD card, and the receiver automatically recognizes and starts playing internal MP3 music filfromfromfor the U-disk or SD card.
- Button ‘V-’ : Click to switch Previous music and keep pressing to decrease the volume.
- Button ‘P/P’: Press to stop playing and press again to start playing.
- Button ‘V+’: Click to switch Next music and keep pressing to increase the volume.
- Button ‘MODE’: Select audio sources as follows: Bluetooth/FM/AUX/U-disk/SD Card.
- Note: U-disk/AUX/SD card has a higher priority than Bluetooth and FM. So it will play music from the U-disk/AUX/SD card automatically after connecting the U-disk/AUX/SD card. But the user can also switch audio source with a button.
- The screen will display the music playing time for the current playing music at the U-disk and SD card modes. Restart displaying time if playing the next music.
- Display ‘AUX’ and ‘AUH’ for AUX mode;
  - Display ‘USB’ in the left upper corner and the playing time.
  - Display ‘SD’ in the lower left corner and the playing time.
  - It can be controlled by buttons or an Infrared Remote Controller.
FM Mode
- Select FM Mode by button the ‘Mode’ as display the current FM frequency.
- Button ‘V-’ : Click to switch to the previously saved FM radio stations and keep pressing to decrease volume.
- Button ‘P/P’: Click to play/pause and keep pressing to search for radio stations and save them.
- Button ‘V+’: Click to switch next saved FM radio station and keep pressing to increase volume.
AUX Mode
- Select AUX Mode by button ‘Mode’. It is also called LINE mode, which needs an input R/L/GND audio signal.
- Its adjustment method is the same as MP3 Mode.
Bluetooth Mode
- Select Bluetooth Mode by button the ‘Mode’ as display ‘BLUE’.
- Search for and connect the Bluetooth device ‘ZTV-CT02EA’ on your phone.
- Button ‘V-’ : Click to switch Previous music and keep pressing to decrease the volume.
- Button ‘P/P’: Press to stop playing and press again to start playing.
- Button ‘V+’: Click to switch Next music and keep pressing to increase volume.
- Answer Phone Calls: Click the Button ‘P/P’ to answer phone calls in Bluetooth Mode if there is a call.
- Reject Calls: Keep pressing the Button ‘P/P’ to reject phone calls in Bluetooth Mode if there is a call. 5.8>.Hang up the phone: Click the Button ‘P/P’ to hang up the phone at Bluetooth Mode during a call.
- Not all buttons are not available when playing the built-in voice prompt tone.
- It can be controlled by buttons or an Infrared Remote Controller.

Component Listing

NO.	Component Name	PCB Marker	QTY
1	Speaker Holder		2
2	Speaker Cover		2
3	Speaker		2
4	XH2.54-2P Wire	15cm	3
5	XH2.54-3P Wire	10cm	1
6	Random ColorWire	10cm	3
7	DC-005 Power Socket		1
8	AUX Socket		2
9	BL-5C Battery Box		1
10	BL-5C Battery Rechargeable	4.2V	1
11	FM Bluetooth Receiver		1
12	FM Antenna		1
13	Silicone SeatCushion		4
14	Infrared Remote Controller		1
15	AUX Audio Wire		1
16	4.2V Battery Charger		1
17	USB-DC005 Power Wire		1
18	Transparent Acrylic Board		6
19	M2*10mm Screw		22
20	M2 Nut		22

Application

Training in welding skills
Student school
DIY production
Project Design
Electronic competition
Gift giving
Crafts collection
Home decoration
Souvenir collection
Graduation design
Holiday gift

Installation Steps

Step 1: Place according to the diagram and install the Speaker, Holder, and Cover.
Step 2: Using a screwdriver or pliers, bend the four fixing holes of the Cover.
Step 3: Tear off the protective film on the surface of the acrylic boards.
Step 4: Fix the speaker acrylic board on the Speaker Holder. Due to the need to fix the speaker to avoid movement, the acrylic and the speaker are relatively tight.
Step 5: Fix XH2.54-2P Wire on Speaker.
Step 6: Fix 3pcs 10cm Wire on the FM Bluetooth Receiver. Tips: Red wire connects to ‘5V’ pad; Black wire connects to ‘GND’ pad; Yellow wire connects to ‘ANT’ pad.
Step 7: The ix DC-005 Power Socket and the AUX Socket on another acrylic board by corresponding nuts as shown. It is recommended to follow the direction shown in the diagram for easy installation guidance in the future.
Step 8: Connect the H2.54-3P Wire in the middle AUX Socket as shown. Note: The Red wire connects to the longest pin. Yellow and black wires can be connected arbitrarily.
Step 9: Fix the 4.2V BL-5C Battery Box on another acrylic board with pcs M2*10mm Screw and 4pcs M2 NuNut.
Step 10: Fix XH2.54-3P Wire on 4.2V BL-5C Battery Box. Pay attention to the position of the red and black wires.
Step 11: Fix the FM Bluetooth Receiver on another acrylic board bwithScrew and a Nut.
Step 12: Connect the FM Bluetooth Receiver to the Power Socket and the AUX Socket. The red wire connects to the longest pin and the d black wire connects to the shorter pin, as shown position from the Power Socket. The yellow pin connects to the longest pin of the another AUX Socket.
Step 13: Fix the Receiver and Battery Box acrylic boards with the Screw and Nut.
Step 14: Fix the Power Socket acrylic boards with a Screw and Nut as shown.
Step 15: Fix the Speaker acrylic boards with a Screw and Nut as shown.
Step 16: Fix another Speaker acrylic board with a Screw and a Nut as shown.
Step 17: Connect the XH2.54-3P wire from the middle AUX Socket to the XH2.54-3P Socket on the Receiver.
Two XH2.54-2P wires from speakers to two white XH2.54-2P sockets. XH2.54-2P wire from Power Socket to Red XH2.54-2P Socket.
Step 18: Fix the last acrylic board with a Screw and a Nut.
Step 19: Install FM Antenna.
Step 20: Paste the Silicone Seat Cushion on the bottom acrylic board.

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