Abstarct – The working principle of this model relies on Electromagnetic Induction and the Piezoelectric Effect to convert kinetic energy into storeable electrical potential. When children play on the merry-go-round, its circular motion spins an attached DC dynamo shaft, generating direct current via magnetic flux changes. Similarly, rotational motion from the wind blowing through park windmill blades drives a mini-generator, providing continuous daytime current. The periodic motion of swinging equipment is mechanically linked through gears or levers to rotate a dynamo shaft back and forth. Meanwhile, people walking along the park footpath apply rectilinear pressure onto piezoelectric coin sensors, generating voltage spikes through mechanical stress deformation. All harvested electrical outputs are regulated through rectifier diodes and filtered before feeding into a rechargeable storage battery. During daylight hours, the LDR sensor detects ambient sunlight and keeps the transistor switch open to keep street lights powered off. As night falls and light levels drop, the LDR’s resistance increases rapidly, triggering the control circuit to automatically switch on LED streetlights powered by the stored battery energy.

Apparatus Required

Base & Layout Structures: High-density plywood base (12×18 inch) for mounting, along with miniature cardboard houses for aesthetic urban modeling.

Landscaping Materials: High-quality artificial trees and green grass matting to simulate realistic public park terrain and garden borders.

Adhesives & Tools: Hot glue gun and high-strength glue sticks for secure physical assembly of mechanisms and structural elements.

Kinetic Generators: Small 3V–6V DC motors/dynamos coupled with mini windmill blades and play equipment for circular, rotational, and periodic motion harvesting.

Piezo Sensors: Piezoelectric coin sensors installed beneath flexible walkway tiles to capture rectilinear mechanical pressure from footsteps.

Automation Sensors: Light Dependent Resistor (LDR) module paired with a BC547 NPN transistor and resistors for automatic day/night detection.

Lighting Units: Low-power 3V miniature LED street light poles positioned along the garden pathways for nighttime illumination.

Power Storage: 3.7V Lithium-ion rechargeable battery or 4V lead-acid battery unit equipped with a charge control/rectifier circuit.

Wiring & Connectors: Insulated copper connecting wires, jumper wires, and breadboard/PCB strips for robust electronic circuit connections.

Hardware Accessories: Miniature gears, wooden axles, craft sticks, and switches for building functional swing and merry-go-round mechanisms.

We also deals with
– Inhouse project training in school and colleges
– Online class/help for invidual projects
– 1000s of readymade projects
– Customized circuits on request
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