Velleman K3400 Dual Electronic Dice Instruction Manual

Introduction

The Velleman K3400 Dual Electronic Dice kit provides an engaging and functional electronic project for enthusiasts. This module serves as a reliable and cheat-proof alternative to traditional dice for board games and other activities. It features two independent electronic dice with LED displays that automatically switch off after 30 seconds to conserve power. This kit is designed for assembly, offering an educational experience in electronics.

Safety Information

• Read Instructions: Always read the entire manual before beginning assembly or operation.
• Soldering Safety: Soldering involves high temperatures. Use appropriate safety gear, including eye protection, and ensure good ventilation. Avoid touching hot components or solder.
• Power Supply: Use only recommended power sources (8V to 12V DC). Incorrect voltage can damage the circuit.
• Component Handling: Handle electronic components carefully. Some components are sensitive to static electricity.
• Children: This kit contains small parts and requires soldering. Keep out of reach of small children. Adult supervision is required for minors during assembly.

Package Contents

The Velleman K3400 kit includes the necessary electronic components for the Dual Electronic Dice module. Please verify that all components are present before starting assembly.

• 1 x Printed Circuit Board (PCB)
• Various electronic components (resistors, diodes, capacitors, integrated circuits, LEDs, etc.)
• Assembly instructions/diagrams

Note: This kit does not include a power supply (e.g., 9V battery or 8-AA battery holder), a 3-position ON-OFF-ON toggle switch, or a momentary pushbutton switch. These items must be acquired separately to complete the functional device.

Setup and Assembly

Assembly of the Velleman K3400 requires basic soldering skills and familiarity with electronic components. Follow the provided step-by-step instructions and diagrams carefully.

1. Preparation: Organize all components. Resistors and diodes are often supplied on a strip in the order of installation. Do not remove them all at once unless you can identify them.
2. Component Placement: Begin by soldering the lowest profile components first, such as resistors and diodes. Pay close attention to polarity for diodes, LEDs, and integrated circuits.
3. Soldering Technique: Ensure clean, strong solder joints. Avoid cold solder joints or solder bridges.
4. External Connections: Once the main circuit board is assembled, connect the external components:
   • Power Supply: Connect an 8V to 12V DC power source.
   • Mode Switch: Install a 6-terminal, 3-position (ON-OFF-ON) toggle switch. This switch typically controls whether one die or two dice are active, with an off position.
   • Activation Button: Connect a momentary, non-latching, normally open pushbutton switch to trigger a new roll.
5. Testing: Before final enclosure, perform initial power-up and functionality tests.

For beginners, it is recommended to proceed slowly and verify each step. Resources like ResistorVision apps can assist in identifying resistor values.

Operating Instructions

1. Power On: Connect the power supply (8V-12V DC).
2. Select Dice Mode: Use the 3-position toggle switch to select between one die, two dice, or turn the unit off.
3. Roll Dice: Press the momentary pushbutton switch to initiate a new roll. The LEDs will display a random number(s).
4. Automatic Shutdown: The LED displays will automatically turn off after approximately 30 seconds of inactivity to conserve power. Press the activation button again to reactivate the display and roll.

Maintenance

• Cleaning: Keep the circuit board and components free from dust and debris. Use a soft, dry cloth for cleaning.
• Storage: Store the assembled unit in a dry, cool environment, away from direct sunlight and extreme temperatures.
• Battery Replacement: If using a battery power source, replace batteries as needed when the LED display dims or functionality is affected.
• Inspection: Periodically inspect solder joints and connections for any signs of damage or corrosion.

Troubleshooting

• No Power/Display:
  • Ensure the power supply is correctly connected and providing the specified voltage (8V-12V DC).
  • Check the polarity of the power connection.
  • Verify all solder joints, especially for power input and ICs.
  • Confirm the 3-position switch is in an "ON" position (1 Die or 2 Dice).
• Dice Not Rolling/Stuck Display:
  • Check the connection and functionality of the momentary pushbutton switch.
  • Inspect the solder joints for the pushbutton and associated circuitry.
• Repetitive or Non-Random Rolls:
  • While the circuit is designed for randomness, rapid, repeated pressing of the activation button may sometimes result in seemingly less random outcomes. Allow a brief pause between presses for optimal random number generation.
  • Ensure all components, especially the integrated circuits, are correctly installed and functioning.
• Incorrect LED Display:
  • Verify the correct orientation and soldering of all LEDs and their current-limiting resistors.
  • Check the integrated circuits responsible for driving the displays.

Specifications

• Model: K3400
• Manufacturer: Velleman
• Power Supply: 8V to 12V DC (not included)
• Dimensions: Approximately 0.98 x 4.76 x 7.87 inches (PCB)
• Item Weight: Approximately 7 ounces (kit components)
• Features: Dual independent dice, automatic display shutdown after 30 seconds.
• Included Components: Electronic kit for assembly (external switches and power supply not included).

Warranty and Support

Velleman products are designed for quality and reliability. For specific warranty information, please refer to the documentation provided with your purchase or visit the official Velleman website. For technical assistance or support regarding the assembly and operation of your K3400 kit, please contact Velleman customer service through their official channels.