1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your Gikfun Soldering Practice Kit EK1987. This DIY electronics project is designed for STEM learning, offering a practical introduction to soldering while building a functional retro game console. The kit includes components for four classic games: Tetris, Snake, Race Cars, and Slot Machines.
2. Safety Information
- Soldering Safety: Always work in a well-ventilated area to avoid inhaling solder fumes. Use appropriate personal protective equipment, including safety glasses.
- Hot Surfaces: Soldering irons and recently soldered components can be extremely hot. Avoid direct contact to prevent burns.
- Electrical Safety: Ensure the power source (USB or batteries) is correctly connected. Do not short-circuit components.
- Component Handling: Some electronic components can be sensitive to static electricity. Handle them carefully by their edges.
- Adult Supervision: This kit is recommended for users with adult supervision, especially for beginners in soldering.
3. Assembly Instructions
Follow these steps carefully to assemble your Gikfun Soldering Practice Kit EK1987. A soldering iron, solder, and basic hand tools (small screwdriver, pliers) are required.
3.1. Component Identification
Before starting, familiarize yourself with all the components included in your kit. Refer to the image below for a visual guide.
Figure 3.1: All components included in the Gikfun Soldering Practice Kit. This includes the PCB, LED matrix displays, 7-segment display, microcontroller, resistors, capacitors, buttons, USB port, battery holder, and acrylic case parts.
3.2. Soldering the Components
Solder each component onto the Printed Circuit Board (PCB) according to the markings on the board and the provided circuit diagram. Ensure correct polarity for diodes, LEDs, and integrated circuits (ICs). Pay close attention to the orientation of the microcontroller (STC15F2K60S2) and the 7-segment display.
Figure 3.2: Detailed circuit diagram illustrating component connections and values.
- Resistors and Capacitors: Solder these first, ensuring they lie flat against the board.
- Diodes and LEDs: Observe polarity (anode and cathode). The longer lead is typically the anode (+).
- IC Sockets (if included) or Microcontroller: If using a socket, solder the socket first, then insert the IC. Ensure the notch on the IC aligns with the notch on the socket/PCB.
- Buttons: Solder the push buttons into their designated spots.
- USB Port and Battery Box Connector: Solder these power input components.
- Speaker: Solder the speaker leads.
- LED Matrix and 7-Segment Display: Solder these display components.
- Power Switch and Transistor: Ensure these are installed, as they may sometimes be omitted from basic diagrams.
3.3. Assembling the Acrylic Case
Once all electronic components are soldered, assemble the acrylic case to protect the circuit board. Carefully peel off the protective film from all acrylic pieces. Use the provided screws and standoffs to secure the PCB within the case.
Figure 3.3: Front view of the fully assembled Gikfun game console within its clear acrylic case.
Figure 3.4: Front and reverse views of the assembled Gikfun game console, highlighting the battery holder on the back.
3.4. Powering the Device
The kit can be powered via the included USB cable or by installing batteries into the battery box. Connect the battery box to the designated connector on the PCB if using batteries.
Video 3.1: Demonstration of the Electronic Game Machine Soldering Practice Project, showing the assembled unit and gameplay.
4. Operating Instructions
Once assembled and powered, the game console is ready for use. The keypad arrangement is designed for ease of play.
4.1. Game Selection
The console includes four classic games:
- Tetris
- Snake
- Race Cars
- Slot Machines
Use the directional buttons and action buttons to navigate menus and play games. Specific button functions may vary slightly between games.
4.2. Adjusting Brightness and Sound
The brightness of the display is adjustable. There is also an option to switch the background music on or off. Refer to the on-screen prompts or the included mini-manual for specific button combinations to control these features.
Video 4.1: Overview of the Gikfun Game Machine Soldering Project Practice Kit, demonstrating its features and gameplay.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the acrylic case and display. Avoid abrasive cleaners or solvents.
- Battery Replacement: If using batteries, replace them when the display dims or the device stops functioning correctly. Ensure correct battery orientation.
- Storage: Store the kit in a dry, cool place away from direct sunlight and extreme temperatures.
- Component Check: Periodically inspect soldered joints for any signs of corrosion or damage, especially if the device is handled frequently.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Incorrect power connection, dead batteries, faulty solder joint. | Check USB cable connection or replace batteries. Inspect all power-related solder joints (USB port, battery connector, power switch). |
| Display is blank or shows incorrect characters. | Incorrectly soldered display, faulty IC, loose connection. | Verify display and IC orientation. Check solder joints for the display and microcontroller. |
| Buttons do not respond. | Faulty button, poor solder joint, incorrect button installation. | Ensure buttons are correctly installed and soldered. Test button functionality with a multimeter if possible. |
| No sound or distorted sound. | Speaker not connected, faulty speaker, poor solder joint on speaker or audio circuit. | Check speaker connections and solder joints. Ensure the audio circuit components (e.g., transistor Q1) are correctly installed. |
| Games are not loading or behaving unexpectedly. | Microcontroller not seated correctly, faulty IC, software issue. | Ensure the microcontroller is fully seated in its socket. Re-check all solder joints, especially around the IC. |
7. Specifications
- Model: EK1987
- Brand: Gikfun
- Power Source: USB 5V or Battery Box (batteries not included)
- Games Included: Tetris, Snake, Race Cars, Slot Machines
- Display: LED Matrix and 7-Segment Display
- Features: Adjustable brightness, switchable background music, humanized keypad.
- Weight: Approximately 0.4 Kilograms (assembled)
- Color: Black (PCB is blue, case is clear acrylic)
8. Warranty and Support
For any questions, technical support, or warranty inquiries regarding your Gikfun Soldering Practice Kit EK1987, please contact Gikfun customer service through the retailer where the product was purchased. Please retain your proof of purchase for warranty claims.
