Science Models

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what you have to arrange - 1. 24/18 inch any hardsheet 2. Glue gun and stick Abstarct - This project is an interactive, illuminated circular food chain display designed to show the flow of energy through an ecosystem. At the center of the base, use an LED to represent the Sun, the primary energy source that powers the entire system. Arrange the primary elements—Grass (Producers), Grasshopper (Primary Consumer), Snake (Secondary Consumer), and Hawk (Tertiary Consumer)—along the outer edge of a rotating circular platform. As the user rotates the base by hand, each stage of the chain aligns with the sunlight, symbolizing the transfer of energy. Include Mushrooms (Decomposers) at the end of the sequence to show how nutrients are returned to the soil to help the grass grow again. To make it more detailed, you can add small figures of other animals like frogs or mice to create a more complex food web. Use color-coded arrows between the figures to indicate the direction of energy flow from one organism to another. The LED can be wired to a simple battery pack hidden beneath the rotating base for a clean, professional look. This tactile, moving model effectively demonstrates the cyclical nature of life and the importance of each link in the biological chain. Finally, label each section clearly so viewers can identify the roles of producers.

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• Item Code: PP9865
• Production Capacity: 10
• Delivery Time: 05 Days
• Packaging Details: As per video

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#bldcmotor #arduinoprojects #btechprojects We ll provide 50 pages of pdf and 20 pages pf PPT as a soft copy What you have to arrange - 1. 24x18 inch any hardsheet - 1 2. Glue gun and stick - 1 3. 100watt Bulb - 1 Abstarct - The system architecture revolves around an Arduino Uno microcontroller that processes inputs from multiple sensors and controls the AC fan through phase-angle triggering of a TRIAC. The temperature sensor connected to analog pin provides precise temperature readings with 10mV per degree Celsius output, which the Arduino converts to actual temperature values through analog-to-digital conversion. The zero crossing detector circuit, connected to interrupt pin , generates a pulse at every zero crossing of the AC mains waveform (occurring every 10ms for 50Hz systems), which triggers an interrupt service routine that sets a flag for TRIAC firing. Based on the temperature reading, the Arduino calculates the required fan speed using a linear mapping function where temperatures between 20°C and 40°C correspond to fan speeds ranging from 10% to 100%. The calculated delay angle, inversely proportional to desired speed, determines how long after zero crossing the TRIAC receives its gate pulse through the MCT2E optoisolator. The voltage sensor continuously monitors the AC mains voltage with a 0-5V input range mapped to 0-300V actual, triggering an over-voltage fault and activating the buzzer if readings exceed 250V. Similarly, the power sensor on pin A3 monitors consumption with 0-5V corresponding to 0-20W, activating protection if power exceeds 10W. The LCD display, interfaced through pins 2-7, updates every 500ms showing current parameters. During fault conditions, the TRIAC firing is immediately stopped, the buzzer activates for 3 seconds, and fault messages appear on the display until conditions normalize with built-in hysteresis. The system employs volatile variables for interrupt-safe communication and includes debouncing mechanisms for reliable zero-crossing detection, ensuring smooth and accurate fan speed control while maintaining complete electrical isolation between control and power circuits. 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 - Both electronics and art n craft materila, retail and wholeselling sale Arduino fan speed controller, AC fan regulator using Arduino, temperature based fan speed control, LM35 Arduino project, TRIAC phase control circuit, MCT2E optoisolator tutorial, zero crossing detection Arduino, automatic fan regulator, Arduino home automation projects, AC motor speed control, phase angle control using Arduino, Arduino over voltage protection, current monitoring Arduino, Arduino LCD display projects, DIY fan speed controller, smart fan regulator circuit, Arduino AC dimmer, temperature controlled fan, Arduino protection circuits, embedded systems project, electronics DIY, Arduino tutorial for beginners, AC power control using Arduino, TRIAC triggering circuit, optoisolator isolation, Arduino interrupt example, real time monitoring system, energy saving fan controller, smart home automation, Arduino based projects 2024

Additional Information:

• Item Code: PJJ65
• Production Capacity: 10
• Delivery Time: 5 to 7 Days
• Packaging Details: As per video

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PROJECTRONICS #schoolproject #scienceproject #smartbridge Abstarct - This smart bridge monitoring system integrates multiple safety mechanisms using an Arduino. Two separate metal plates act as a crack detector - any widening gap breaks the circuit, triggering an alert. A piezo sensor serves as the earthquake detector by measuring vibrations exceeding safe thresholds. For overload monitoring, strategically placed switches activate under excessive weight. The system processes all inputs through the Arduino, which controls the output components. When any hazard is detected, a red LED illuminates and a buzzer sounds an alarm. Simultaneously, a servo motor closes a gate barrier to prevent access. An LCD screen displays the specific fault (crack, earthquake, or overload) for immediate identification. Under normal, safe conditions, a green LED remains lit, indicating the bridge is operational. This provides a comprehensive, automated safety solution for infrastructure monitoring. What you have to arrange - 1. 18x24 inch any hardsheet 2. Glue gun and sticks We deals with - Inhouse project training in school and colleges - Online class/help for invidual projects - 1000s of readymade projects - Customized circuits on request - Both electronics and art n craft materila, retail and wholeselling sale

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• Item Code: PP1114
• Production Capacity: 05
• Delivery Time: 05 Days
• Packaging Details: As per video

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#schoolproject #btechprojects #electricalengineering You have to arrange - 1 - 24x18 plywood or ny hardsheet 2 - Gluegun and stick 3 - solar panel 12v 5 watt 4 - 3.7v x 3 - Battery (18650 model) We deals with - Inhouse project training in school and colleges - Online class/help for invidual projects - 1000s of readymade projects - Customized circuits on request - Both electronics and art n craft materila, retail and wholeselling sale Abstarct - The process begins with the solar panel, which captures photons to generate DC electricity, which is then regulated by the MPPT (Maximum Power Point Tracking) controller to ensure the Lithium-ion battery bank (configured with three $3.7\text{V}$ cells) charges at peak efficiency. This stored DC energy provides the input voltage for the inverter circuit. The CD4047 IC acts as the heart of the system, configured as an astable multivibrator to produce a stable $50\text{Hz}$ square wave oscillation. These low-power pulses are fed into the gates of two IRF840 MOSFET modules, which act as high-speed switches, rapidly toggling the DC current in a push-pull configuration. This switching action creates an alternating magnetic field within the primary winding of a step-up transformer. The transformer then induces a higher voltage in its secondary winding, stepping the low-voltage DC pulses up to approximately $220\text{V}$ AC. Finally, this high-voltage output is used to drive the LED bulb AC load, completing the conversion from renewable solar energy to usable light. Solar Energy, Inverter Circuit Design, Photovoltaic System, DC to AC Converter, Renewable Energy Project, Pure Sine Wave Inverter, Solar Panel Integration, Electrical Engineering Project, DIY Solar Power, Power Electronics, Battery Management System (BMS), 12V to 230V Inverter, Pulse Width Modulation (PWM), H-Bridge Circuit, Arduino Solar Project, Sustainable Tech, Clean Energy DIY, Home Automation, Voltage Regulation, Transformerless Inverter, Solar Charge Controller, MPPT Technology, Off-Grid Power System, Engineering Final Year Project.

Additional Information:

• Item Code: PJE022
• Production Capacity: 10
• Delivery Time: 05 Days
• Packaging Details: As per video

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PROJECTRONICS #batteryprotection #electricalengineeringproject #iotprojects what you have to arrange - 1. Glue gun and stick 2. 3.7v (18650) Battery - 3 3. 24x18inch any hardsheet Abstarct - This IoT-based system leverages an Arduino Uno and ESP8266 to provide real-time battery health monitoring and multi-layer protection for solar-powered setups. Solar energy charges the battery through a controller, while the Arduino continuously samples data from a voltage divider, a current sensor, and a thermistor to assess the state of health and charge. If the battery falls below a safe threshold (Low Voltage Protection) or the DC fan (load) draws excessive current (Overload Protection), the Arduino triggers a relay to disconnect the load, preventing deep discharge or circuit damage. Simultaneously, the thermistor monitors for thermal runaway, halting operations if temperatures spike (Over Temp Protection). The ESP8266 module acts as a Wi-Fi gateway, transmitting these critical parameters—voltage, current, and temperature—to the Adafruit IO server. Users can view live health trends and receive alerts on a customized dashboard, while a local 16x2 LCD provides immediate status updates on-site. This dual-layered monitoring ensures the longevity of the battery bank while maintaining the safety of the connected DC load. Battery Health Monitoring, IoT Solar Project, Arduino Uno, ESP8266 WiFi, Adafruit IO Dashboard, Solar Energy Management, BTech Electrical Project, Lead Acid Battery Monitoring, Overload Protection Circuit, Low Voltage Cutoff, Thermal Protection System, IoT Battery Management System (BMS), Renewable Energy IoT, DIY Solar Monitor, Smart Battery Tracker, Electrical Engineering Final Year Project, NTC Thermistor Temperature Control, DC Fan Load Protection, Embedded Systems Project, Real-time Data Logging. 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 - Both electronics and art n craft materila, retail and wholeselling sale

Additional Information:

• Item Code: PPJ109
• Production Capacity: 10
• Delivery Time: 7 days
• Packaging Details: As per video

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Abstarct - The greenhouse effect is a natural process where certain gases in Earth's atmosphere, like carbon dioxide and methane, trap heat from the sun, acting like a warm blanket to keep our planet habitable. However, human activities, primarily the burning of fossil fuels for energy, deforestation, and industrial processes, are drastically increasing the concentration of these greenhouse gases. This enhanced greenhouse effect causes the atmosphere to trap excessive heat, leading to a steady rise in global average temperatures, a phenomenon known as global warming. The consequences of this warming are widespread and severe, including the rapid melting of polar ice caps and glaciers, which contributes to rising sea levels that threaten coastal communities. It also intensifies extreme weather events, making hurricanes stronger, droughts longer, and heatwaves more frequent and deadly. Furthermore, it disrupts delicate ecosystems, leading to coral bleaching and loss of biodiversity. For this school project, we can demonstrate this concept using a simple model: two jars (one with added CO2 from exhaled air or vinegar-baking soda reaction) placed under a lamp will show how the jar with higher gas concentration traps more heat. This project highlights the urgent need for solutions like transitioning to renewable energy sources, promoting sustainable practices, and conserving forests to mitigate this critical environmental challenge. You have to arrange - 1. 24x18 and 24x12 inch any hardsheet 2. Glue gun and stick

Additional Information:

• Item Code: PP5533
• Production Capacity: 05
• Delivery Time: 05 Days
• Packaging Details: Background paper, trees, houses, tower, etc (No base )