1. Introduction
This instruction manual provides comprehensive guidance for assembling and operating your Walfront DIY 3D Christmas Tree Electronic Kit. This kit is designed as an educational soldering project, ideal for beginners and hobbyists interested in electronics. Upon completion, it creates a decorative 3D Christmas tree with 16 flashing LEDs.
Please read all instructions carefully before beginning assembly to ensure proper function and safety.
2. Safety Information
Working with electronic components and soldering irons requires caution. Please observe the following safety guidelines:
- Always use a soldering iron in a well-ventilated area.
- Wear appropriate eye protection to shield against solder splashes.
- Avoid touching the hot tip of the soldering iron.
- Ensure the soldering iron is placed in a safe stand when not in use.
- Keep flammable materials away from the soldering area.
- Wash hands thoroughly after handling solder, especially lead-based solder.
- Keep components and tools out of reach of small children.
3. Package Contents
Verify that all components listed below are present in your kit before starting assembly. A soldering iron and solder are required but not included.
Image 3.1: All components included in the Walfront DIY 3D Christmas Tree Electronic Kit, neatly arranged.
- 3 x PCB Boards (2 tree-shaped, 1 square base)
- 16 x LED Lamp Beads (multicolor)
- Resistors (various values)
- Capacitors (electrolytic and ceramic)
- Transistors
- Diodes
- 1 x Battery Holder (for 2 AA batteries, batteries not included)
- 1 x USB Power Cable
- Small hardware (screws, nuts)
4. Assembly Instructions
Follow these steps carefully to assemble your 3D Christmas Tree Electronic Kit. Refer to the component values printed on the PCB for correct placement.
4.1. Identify PCB Boards
The kit includes three Printed Circuit Boards (PCBs): two identical tree-shaped boards (MR-A and MR-B) and one square base board (MR-C).
Image 4.1.1: The two tree-shaped PCBs (MR-A and MR-B) and the square base PCB (MR-C).
4.2. Solder LEDs to Tree PCBs
Each tree-shaped PCB has designated spots for 8 LEDs. LEDs are polarized components; ensure the longer lead (anode) is inserted into the hole marked with a '+' or a square pad, and the shorter lead (cathode) into the round pad. Solder all 8 LEDs onto each of the two tree PCBs (MR-A and MR-B).
Image 4.2.1: Individual LED components. Note the longer lead for positive connection.
4.3. Solder Resistors, Capacitors, and Transistors
Carefully identify and solder the resistors, capacitors, and transistors onto their respective positions on the tree PCBs (MR-A and MR-B) and the base PCB (MR-C). Pay attention to the polarity of electrolytic capacitors (marked with a stripe for negative) and transistors (refer to the flat side or pinout diagram if provided on the PCB). Resistors are not polarized.
Image 4.3.1: Detail of the PCB layout, showing component placement guides and integrated circuit drive design.
4.4. Assemble Tree PCBs onto Base PCB
Once all components are soldered onto the tree PCBs, carefully align the two tree-shaped PCBs (MR-A and MR-B) and insert their designated tabs into the slots on the square base PCB (MR-C). Ensure a snug fit. Solder the connections to secure the tree PCBs to the base.
4.5. Connect Power Source
Connect the battery holder wires to the designated pads on the base PCB (MR-C), observing polarity (red wire to positive, black wire to negative). Alternatively, the included USB cable can be connected to the USB port on the base PCB for power.
Image 4.5.1: The Walfront DIY 3D Christmas Tree Electronic Kit fully assembled, ready for operation.
5. Operating Instructions
After successful assembly, your 3D Christmas Tree is ready to operate.
- Power Source: Insert 2 AA batteries (not included) into the battery holder, or connect the USB cable to a 5V USB power source.
- Power On/Off: Locate the switch on the base PCB. Slide the switch to the "ON" position to activate the flashing LEDs. Slide to "OFF" to power down.
- LED Display: The 16 multicolor LEDs will begin to flash in various patterns, creating a dynamic light display.
Image 5.1: Examples of the flashing LED patterns displayed by the assembled 3D Christmas Tree.
6. Maintenance
The Walfront DIY 3D Christmas Tree Electronic Kit requires minimal maintenance.
- Cleaning: Use a soft, dry cloth to gently wipe dust from the PCBs and LEDs. Avoid using liquids or abrasive cleaners.
- Battery Replacement: If using battery power, replace the 2 AA batteries when the LED lights dim or stop flashing. Ensure correct polarity when inserting new batteries.
- Storage: Store the assembled kit in a dry, cool place away from direct sunlight and excessive humidity.
7. Troubleshooting
If your 3D Christmas Tree does not function as expected, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| LEDs do not light up. |
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| Some LEDs do not light up. |
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| Lights are dim or flicker. |
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8. Specifications
- Model: WALFRONTn8h4qydcob-11
- LEDs: 16 Multicolor Flashing LEDs
- Working Voltage: 4.5V - 5V
- Power Supply: 2 x AA Dry Batteries (not included) or USB 5V
- Dimensions (Assembled): Approximately 4.72 x 3.94 x 1.57 inches
- Weight (Kit): Approximately 2.5 ounces
- Manufacturer: WALFRONT
9. Warranty and Support
For specific warranty information or technical support regarding your Walfront DIY 3D Christmas Tree Electronic Kit, please refer to the retailer where the product was purchased or contact Walfront customer service directly. Keep your purchase receipt as proof of purchase.
For general inquiries, you may visit the Walfront Store online: Walfront Store
