science working model

This is a gravity-based water dispenser. When the water bottle is placed upside down, gravity pushes water toward the straw pipe. Opening the cap slightly allows air to enter, and water flows out through the straw into the glass. This demonstrates how gravity and air pressure can be used to dispense water without electricity or … Read more

This model shows how a water level indicator works. When the water reaches the level of the two safety pins, it completes the electric circuit, turning on the red LED light and the buzzer. This indicates that the tank is full and water should be stopped. It helps in preventing water overflow and wastage, and … Read more

This is an automatic street light working model without sensors. When a vehicle passes over a hump, it presses the push button below, turning on the LED street light. Once the vehicle leaves the hump, the button is released and the light turns off. This shows how street lights can work automatically using simple pressure … Read more

Project Theme: Simulate how a blood pressure monitor (sphygmomanometer) works using hydraulics and pressure concepts with syringes and a cardboard dial to show BP levels. Step-by-Step Video Instructions: 1. Make the Arm Cuff Simulator 2. Hydraulic Pressure Mechanism 3. Create the BP Dial 4. Pressure-to-Pointer Movement How It Works: https://howtofunda.com

In this DIY project, you’ll learn how to build a Streetlight Working Model using cardboard, LED lights, and a 9V battery. Step-by-Step Video Instructions: Manual Version (Switch-controlled): https://howtofunda.com