EIELEDIY HT6872 Bluetooth Audio Kit Instruction Manual

EIELEDIY HT6872 Bluetooth Audio Kit

Specifications:

• Name: Bluetooth Audio Kit
• Brand: EIELEDIY
• Product Size: 70mm x 70mm x 83mm
• Working Voltage : DC 5V
• Work Temperature : -20~80°C
• Work Humidity : 0%~95%RH
• Amplifier Model : HT6872 Audio Amplifier
• Speaker : 43W * 1
• Audio Input : Bluetooth and Audio Cable (Optional)
• Key Functions : Power Switch, Bluetooth on/off, Previous/Next, Volume +/-
• Auxiliary Functions : LED flashing
• Shell : Acrylic Shell

Product Usage Instructions

About The Product:
The Bluetooth Audio Kit by EIELEDIY is a compact and stylish audio device that supports both Bluetooth and audio cable input modes. It features a professional audio chip for dynamic sound quality.

Application:

• Family Education
• School Courses
• Electronic Competition
• DIY Production
• Welding Skills
• Kit Sales
• Gift Giving

Features:

• Small size
• Easy installation
• Clear working principle

Instructions for Use :

Bluetooth Connection Mode:

1. Plug the USB power cord into the power supply and press the self-locking switch to turn on the power.
2. Turn on the Bluetooth switch; the light on the Bluetooth module will blink.
3. Activate Bluetooth on your cell phone and search for “MH-M18”; once connected, you can play music through the device.

Installation Instructions:

Necessary Tools :
Soldering Irons, Solder Wire, Multimeters, Tweezers, Wire Cutters, and other professional equipment are required for installation.

Installation Tips:

• Check for solder joint integrity and avoid virtual or floating welding.
• Avoid prolonged contact of the soldering iron with components to prevent damage.

Soldering Steps :
Detailed steps for soldering various components are provided in the manual. Ensure correct placement and follow the instructions carefully.

• Assembly Result :
  After completing the assembly, test the functions before installing the casing to ensure proper functionality.

• Contact & Service:
  If you encounter difficulties during assembly or receive missing or defective accessories, please contact the manufacturer for assistance and resolution

FAQ:

1. Q: What should I do if I encounter difficulties during assembly?
   A: Contact our customer service for assistance. We are here to help you through the assembly process.

2. Q: What if I receive missing or defective accessories?
   A: Please contact us immediately, and we will arrange for a reissue of the accessories without delay.

Bluetooth Audio Kit

About The Product

1. Parameters

2. Name : Bluetooth Audio Kit

3. Brand : EIELEDIY

4. Product Size : 70mm70mm83mm

5. Working Voltage : DC 5V

6. Work Temperature : -20℃~80℃

7. Work Humidity : 0%~95%RH

8. Amplifier Model : HT6872 Audio Amplifier

9. Speaker: 4Ω3W * 1

10. Audio Input: Bluetooth and Audio Cable (Optional)

11. Key Functions: Power Switch, Bluetooth on/off, Previous/Next, Volume+/-

12. Auxiliary Functions : LED flashing

13. Shell: Acrylic Shell

14. Description
    This Bluetooth audio has a delicate shell, and stylish audio running lights, audio compact and exquisite, but also supports Bluetooth input and audio input two audio modes, professional audio chip to make the sound quality more dynamic.

15. Application

16. Family Education

17. School Courses

18. Electronic Competition

19. DIY Production

20. Welding Skills

21. Kit Sales

22. Gift Giving

23. Feature

24. Small size

25. Easy installation

26. Clear and clear working principle

Important Notes
Necessary Tools
Soldering Irons, Solder Wire, Multimeters, Tweezers, Wire Cutters and other professional equipment

Installation instructions

This product is a DIY kit and you need to install it yourself. DIY installation is quite a delicate operation, you need to have patience to complete this project.
It is not a finished product

1. It is strongly recommended to read the installation manual before starting the installation.
2. Check the parameters and quantity of accessories against the accessories list.
3. Please refer to the accessories list and PCB screen printing to confirm the installation direction, position, positive and negative of the accessories.
4. Short circuits are strictly prohibited, which will damage the circuit components.
5. Ensure that each solder joint can be welded in good condition. If problems are found, check whether the solder joint falls off, virtual welding, and floating welding.
6. Do not let the soldering iron touch the component for too long, otherwise it will damage the component.

Service

1. Our main business is a variety of electronic components experimental practice kits and supporting tools, which are mainly used for training teaching, production courses, and welding exercises for the majority of electronic DIY enthusiasts. We are committed to allowing each customer to turn the purchased kit into a finished product, so that every assembly can be harvested. We insist on ensuring product quality with details and attitude, and improving service quality with professionalism and patience.
2. The assembly of the kit requires a certain amount of professional knowledge, and the degree of difficulty is also different. I hope you can try your best to communicate with us when you encounter difficulties in assembly. We will patiently assist you in completing the assembly.
3. The kit consists of multiple accessories, which we have repeatedly counted and tested before shipment. However, due to logistics reasons, the accessories you received are missing or the performance of the accessories is poor. Please contact us as soon as possible, and we will arrange a reissue for you immediately.

Start Installation(Enjoy the installation process to the fullest

Product Assembly Result

 Component List

Product parts diagram

 Circuit Principle

Soldering Steps

• Step 1:Soldering Metal Film Resistors.
  Mark: Install 330ohm metal film resistor to R3 position;

  • Install 10Kohm metal film resistor to R4,R5 position;
  • Install 12Kohm metal film resistor to R1,R7 position;
  • Install 33Kohm metal film resistor to R6 position;

• Tips: Soldering metal film resistors without distinguishing between positive and negative terminals.

• Strongly recommended: measure the resistance value with a multimeter before mounting and soldering.

• Step 2 : Soldering Bluetooth Audio Module

• Mark: Install M18 Audio Module to P4 position;

• Tips: Install according to the prompt diagram. Be careful not to make false welds when soldering.

• Step 3: Soldering IC

• Mark: Install HT6872 SMD IC to U1 position;

• Tips: The dot on the IC corresponds to the dot in the printed logo on the PCB.

• Step 4 : Soldering IC

• Mark: Install KA2284 IC to U2 position;

• Tips: The beveled corners of the IC edges and the beveled corners in the printed markings on the PCB are mounted correspondingly.

• Step 5 : Soldering Ceramic Capacitors

• Mark: Install 104 Ceramic Capacitors to C1,C9,C10,C17 positions;

• Tips: Soldering Ceramic capacitors without distinguishing between positive and negative terminals.

• Step 6 : Soldering Electrolytic Capacitors

• Mark: Install 1uF 50V Electrolytic Capacitors to C2,C7 position;

  • Install 10uF 50V Electrolytic Capacitors to C3,C6 position;
  • Install 470uF 10V Electrolytic Capacitors to C4,C5 position;
  • Tips: Electrolytic capacitor pin length positive short negative. The holes marked with “+” or left blank in screen printing are positive electrodes.

• Step 7: Soldering LED
  Mark: Install RED 5mm LED to D5 position;

  • Install GREEN 5mm LED to D4 position;
  • Install BLUE 5mm LED to D3,D2,D1 position;

• Tips: The long pin of the LED is positive and the short pin is negative (long positive, short negative). The through-hole printed at the “+” end of the PCB is the positive terminal.

• Step 8 : Soldering Potentiometer

• Mark: Install 50k (503) Potentiometer to RP1 position;

• Install 10K (103) Potentiometer to RP2 position;

• Tips: Install the pins on the potentiometer in correspondence with the through holes on the PCB.

• Step 9 : Soldering Audio Sockets

• Mark: Install 3.5mm Audio Socket to P1 position;

• Tips: Install according to the prompt diagram.

• Step 10 : Soldering Touch Switch

• Mark: Install Touch Switch to K1,K2,K3 position;

• Tips: Install the light touch switch pin corresponding to the through-hole on the PCB.

• Step 11 : Soldering Self-Locking Switches

• Mark: Install Self-Locking Switches to S1 position;

• Tips: Pay attention to installing the markings on the self-locking switch corresponding to the markings on he screen printed pattern.

• Step 12 : Soldered Terminal Blocks

• Mark : Install Terminal Blocks to P2,P3 position;

• Tips: Orient the terminal wiring port towards the outside of the PCB.

• Step 13 : Soldering Loudspeaker

• Mark: Install Loudspeaker to P3 position;

• Tips: The red wire is positive and the black wire is negative. Be careful to distinguish between positive and negative poles when installing.

• Step 14 : Solder USB Socket

• Mark: Install USB Cable to P2 position;

• Tips: Install according to the prompt diagram.

Installing Housing

Before installing the casing, please power on and test the function to ensure correct welding.

Remove the protective film from both sides of the casing.
Step 15: Install M3 copper post to fix the board
Step 16: Installing the bottom housing
Step 17 :Install front housing and splice bottom housing

• Note: Observe the front housing opening corresponding to the direction of the button below.

• Screwing too tightly will cause deformation of the acrylic housing, which will affect subsequent installation.

• Step 18 :Installation of left and right side housing

• Step 19 :Installation of the top and back housing

  • Note: Lead the power cable out of the reserved port on the bottom side of the housing.
  • The self-locking switches and audio jacks correspond to the openings on the PCB.

Instructions for Use

Bluetooth Connection Mode

1. Plug the USB power cord into the power supply. Press the self-locking switch to turn on the power.
2.  Turn on the Bluetooth switch, the light on the Bluetooth module blinks
3.  Turn on your cell phone Bluetooth and find “MH-M18”, you can play music after successful connection

Audio cable connection mode

1. Connect speakers and audio devices with the audio cable for direct audio content playback
   Note: Using the audio cable mode, you need to turn off Bluetooth mode. Turn off the Bluetooth switch, the indicator light on the Bluetooth module is always off to indicate that Bluetooth is off.

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