1. Product Overview
The iCubeSmart 3D8P LED Cube is an innovative DIY electronic kit designed for enthusiasts to assemble their own 8x8x8 LED matrix cube. Unlike traditional LED pins, this kit utilizes narrow PCB strips for a cleaner matrix structure, preventing rust on LED lamp pins. The design facilitates easy maintenance, disassembly, and transport.
The mainboard comes pre-programmed with over 20 gorgeous animation effects. Users can also modify displayed text and dynamic effects using 3D software, without needing C code, making customization simple.
This kit requires user soldering. Basic electronic and soldering skills are necessary. Users must provide their own soldering iron, solder wire, and other soldering tools. The mainboard is pre-soldered and tested; users only need to solder the LED lights and PCB brackets.
2. Package Contents
Upon receiving your product, please verify that all the following components are included in your kit:
- 1 x Pre-tested Mainboard
- 64 x LED Lamp Beads PCB
- 16 x Corresponding PCB
- 128 x 2P Pin Headers
- 16 x 8P Pin Headers
- 1 x LED Soldering Bracket
- 2 x Lamp Anchor Brackets
- 550 x Blue LEDs (512 used, 38 spare)
- 1 x Program Downloader + DuPont Line
- 1 x Power Cord
- 1 x Instruction Manual (Paper)

3. Setup and Assembly
This section guides you through the assembly process of your iCubeSmart 3D8P LED Cube. Please follow the steps carefully to ensure proper functionality.
3.1. Preparing the LED Layers
- Solder LEDs to PCB Strips: Use the provided LED soldering bracket to hold the LED lamp beads and PCB strips in place. Carefully solder each LED to its designated spot on the PCB strip. Ensure a strong, clean solder joint.
- Forming LED Layers: Once all LEDs are soldered to the PCB strips, you will have 64 horizontal PCB strips. These will form the 8 layers of your cube.

3.2. Assembling the Cube Structure
- Connect Vertical PCBs: Solder the 16 vertical PCB boards to connect the horizontal LED layers, forming the 8x8x8 cube structure.
- Attach Pin Headers: Solder the 2P and 8P pin headers to the appropriate locations on the PCB strips and mainboard as indicated in the paper instruction manual.

3.3. Connecting to the Mainboard
- Mount the Cube: Carefully insert the assembled LED cube structure onto the mainboard, aligning the pin headers with the corresponding sockets.
- Secure Connections: Ensure all connections are firm. The mainboard is pre-tested, so focus on secure connections for the LED cube.

4. Operating Instructions
Once assembled, your iCubeSmart 3D8P LED Cube is ready to display various dynamic effects.
4.1. Powering On
Connect the provided power cord to the mainboard and a 5V USB power source. The cube will automatically power on and begin displaying its pre-programmed animation effects.
4.2. Changing Animation Effects
The mainboard features four buttons to control the dynamic display effects:
- Button 1 (Start/Pause): Press to start or pause the dynamic effect.
- Button 2 (Cycle Mode): Press to switch between single dynamic effect mode and full dynamic effect mode.
- Button 3 (+): Press to increase the speed or change to the next effect.
- Button 4 (-): Press to decrease the speed or change to the previous effect.

5. Maintenance
To ensure the longevity and optimal performance of your iCubeSmart LED Cube, follow these maintenance guidelines:
- Cleaning: Gently wipe the cube with a soft, dry cloth to remove dust. Avoid using liquid cleaners or abrasive materials.
- Handling: Handle the cube with care. Avoid dropping it or applying excessive force, as this can damage the delicate LED connections.
- Storage: When not in use, store the cube in a dry, cool place away from direct sunlight and extreme temperatures.
6. Troubleshooting
If you encounter any issues with your iCubeSmart LED Cube, please refer to the following common problems and solutions:
- LEDs not lighting up:
- Check all solder joints for cold joints or bridges. Re-solder any problematic connections.
- Ensure the LEDs are inserted with the correct polarity. The longer leg is typically the anode (+).
- Verify that the power supply is providing stable 5V.
- Inspect for any bent or broken LED pins. Spare LEDs are provided in the kit.
- Cube not powering on:
- Ensure the power cord is securely connected to both the mainboard and the USB power source.
- Try a different 5V USB power adapter and cable.
- Animation effects not changing:
- Ensure the buttons on the mainboard are functioning correctly.
- If you have attempted custom programming, ensure the firmware was uploaded correctly.
- Missing parts during assembly:
- Double-check the package contents against the list in Section 2.
- If a critical part is missing, please contact iCubeSmart technical support.
For further assistance, please refer to the technical support information in Section 8.
7. Specifications
| Feature | Specification |
|---|---|
| Microcontroller | STC12C5A60S2 |
| Driver Chip | 74HC573 + APM4953 |
| LED Type | 3mm Blue LED |
| LED Quantity | 512 (plus 38 spare) |
| Cube Dimensions (Finished) | 18 x 18.5 x 19 cm |
| Power Supply | 5V USB |
| Package Dimensions | 21.3 x 19.3 x 4.7 cm |
| Package Weight | 470 g |
8. Warranty and Support
iCubeSmart is committed to providing excellent customer service and technical support for our DIY products.
8.1. Technical Support
Our company employs professional technicians dedicated to providing technical support and assisting buyers with any issues encountered during the installation and operation of the product. If you have questions or require assistance, please send us a message.
We offer lifetime technical support service for all our DIY products.
8.2. Warranty Information
Please retain your proof of purchase for any warranty claims. Specific warranty details may vary; contact our support team for more information regarding product defects or missing components upon arrival.






