CAI-266-2 RGB LED Heart-shaped Flashing Lamp DIY Kit

1. Introduction

The CAI-266-2 is a DIY electronic soldering kit that creates an RGB Colorful LED Heart-shaped Automatic Flashing Lamp. It is powered by two AAA batteries and features 32 colorful RGB LEDs that automatically flash and change lighting effects. A matched transparent shell serves as a bracket for stability, a battery case, and enhances lighting effects. This kit is suitable for learning about circuits, soldering, and as an experimental workbench tool.

2. Features

• 32 RGB Colorful LEDs with Automatic Flashing
• Automatic Switch Flashing Effect
• Heart-shaped Appearance Design
• Powered by 2x AAA Batteries
• Multifunctional Transparent Shell
• Simple and Fast Parameter Setting
• Engaging DIY Manual Soldering Experience

3. Parameters

• Operating Voltage: DC 3V
• Display Color: RGB
• Power Type: 2x AAA Batteries (NOT Included)
• Operating Temperature: -40℃ to 85℃
• Operating Humidity: 5% to 95% RH
• Installed Size: 90*76*30mm

4. Usage Method

• Turn on the power switch; the LEDs will automatically enter the working state.
• Tweezers can be used to switch the power status.

5. Component Listing

Note: Users can complete the installation according to the PCB silk screen and component list.

6. Schematic Diagram

A schematic diagram illustrates the connections between components, including the microcontroller (U1), LEDs (D1-D32), resistors (R1-R33), capacitors (C1-C3), crystal oscillator (Y1), and power supply connections.

7. Applications

• Training welding skills
• Student school projects
• DIY production
• Project design
• Electronic competitions
• Gift giving
• Crafts collection
• Home decoration
• Souvenir collection
• Graduation design
• Holiday gifts

8. Installation Tips

Before starting, ensure you have the necessary tools:

• Soldering iron (under 50 Watt)
• Rosin core solder
• Wire cutters
• Wire strippers
• Screwdriver

Be patient during installation. The package is a DIY kit that requires user assembly.

Important notes:

• Avoid prolonged contact (over 1.0 second) between the soldering iron and components to prevent damage.
• Pay attention to the polarity of components.
• Strictly prohibit short circuits.
• Install LEDs according to the specified rules to ensure they light up correctly.
• Install complex components first.
• Ensure all components are correctly oriented and placed.
• Read the entire installation manual before starting.
• Wear anti-static gloves or wristbands when handling electronic components.

9. Installation Steps

Step 1: Install 1pcs 3V to 5V Boost Power Supply Module at J1. Melt one pad with tin, then use a soldering iron and tweezers to place the module and align it. Solder the remaining two pads.

Step 2: Install 1pcs 10Kohm Metal Film Resistor at R33 on the other side of the PCB.

Step 3: Install 32pcs 1Kohm Metal Film Resistors at R1-R32.

Step 4: Install 1pcs 12MHz Crystal Oscillator at Y1.

Step 5: Bend the pins of the 10uF electrolytic capacitor approximately 2mm.

Step 6: Install the Electrolytic Capacitor at C7. The longer pin is the positive pole and should connect to the '+' pad. The capacitor should be placed horizontally.

Step 7: Install 2pcs 22pF Ceramic Capacitors at C2 and C3.

Step 8: Install 1pcs DIP-40 IC Socket at U1. Align the gap mark on the IC socket with the gap mark on the PCB silk screen for correct orientation.

Step 9: Identify the positive (anode) and negative (cathode) leads of the LEDs. Methods include checking lead length (longer is positive), observing the internal structure (thicker/bigger side is negative), checking the plastic case edge (flat edge is negative), or testing with a 3V battery.

Step 10: Install 32pcs 5mm RGB LEDs at D1-D32. The longer pin (positive pole) connects to the '+' pad.

Step 11: Install 1pcs 6Pin SMD Power Switch at S1 on the other side of the PCB, similar to Step 1. Ensure the soldering iron temperature is not too high and avoid prolonged contact with the pins.

Step 12: Install 1pcs DIP-40 IC STC89C52RC at U1. Align the gap mark on the IC with the gap mark on the IC socket for correct orientation.

Step 13: Connect the red wire to the '+' pad and the black wire to the '-' pad.

Step 14: Press down the protrusions on both ends of the largest battery metal sheet.

Step 15: Insert the metal sheet into the Transparent Bottom Shell.

Step 16: Bend the metal pin in the middle downwards to stabilize it.

Step 17: Place the other two smaller battery metal sheets into the Transparent Bottom Shell, paying attention to their position and direction.

Step 18: Bend the metal pins outward to stabilize the battery contacts.

Step 19: Connect the red wire to the smaller metal sheet without a spring and the black wire to the smaller metal sheet with a spring.

Step 20: Install 2pcs AAA batteries (not included). Note: The battery's negative pole connects to the metal spring.

Step 21: Place the Foam Spacer onto the batteries. This isolates the battery and PCB and prevents the battery from loosening.

Step 22: Secure the PCB to the Transparent Bottom Shell using 2pcs 5mm Self-Tapping Screws. Tighten gently, avoiding excessive force.

Step 23: Attach the other Transparent Top Shell using 2pcs 7mm Self-Tapping Screws. Tighten gently, avoiding excessive force.