Abstract:
The LED Lighting in Aquarium Using LDR Sensor STEM Kit provides an innovative solution for automated lighting based on light intensity. This kit uses an LDR sensor, a comparator IC (LM393), and a relay for efficient and reliable light sensing. When the surrounding light diminishes, the LED emergency light automatically illuminates, creating a perfect simulation for students and hobbyists to understand light-based automation.

Key Applications:
Ideal for educational projects, automation experiments, and electronics learning. Perfect for students, DIY enthusiasts, and hobbyists exploring LDR sensor-based circuits.

Features:

1. Light-Based Automation: Detects light intensity variations to control LED lighting in aquariums or similar applications.
2. Simple and Cost-Effective: Uses an LDR sensor for light detection, reducing the complexity and cost compared to other systems.
3. Easy Assembly: Comes with a pre-assembled circuit board and detailed instructions for effortless assembly and testing.
4. Reliable Components: Includes LM393 dual comparator IC and a relay for enhanced circuit stability.
5. Educational Value: Perfect for understanding the practical application of light sensors in automation and electronics.

Working Principle:
The circuit uses an LDR to detect the intensity of light. Under low-light conditions, the LDR reduces conduction, causing the comparator IC to trigger the relay and turn on the LED emergency light. When sufficient light is present, the LED light turns off automatically.

Assembly Instructions:

1. Read the provided manual and identify the components using the supplied list.
2. Assemble the circuit as per the diagram, ensuring proper polarity for diodes and capacitors.
3. Solder components in their designated PCB positions, starting from resistors to IC sockets.
4. Test the circuit by connecting a 5V DC power supply and adjusting the light sensitivity with the variable resistor.

Testing the Circuit:

1. Place the circuit in a low-light environment to test LED activation.
2. Adjust the sensitivity using the variable resistor to suit specific requirements.

Package Includes:

• Assembled PCB with components
• Circuit diagram and testing guide
• 5V USB power cable

Component List:

• LM393 IC (Dual Comparator)
• LDR (Light-Dependent Resistor)
• Red and Green LEDs
• 5V Relay
• Resistors and capacitors (various values)

Keywords:

1. LED lighting automation kit
2. LDR sensor circuit project
3. STEM science kit for students
4. DIY aquarium lighting experiment
5. Buy electronics kits online India