This River Flood Working Model is a simple and attractive science exhibition project that demonstrates how heavy rainfall in mountainous areas can increase the flow of water in rivers and cause flooding in nearby villages, roads, and low-lying areas. The model is especially suitable for explaining the flood situation in Nepal, where mountainous terrain, heavy … Read more
A breadboard is one of the most useful tools for learning electronics and building simple circuits. It allows us to connect electronic components such as LEDs, resistors, sensors, switches, buzzers, and jumper wires without soldering. Because components can be inserted and removed easily, a breadboard is especially useful for students, beginners, and science-project models. A … Read more
#include <Servo.h> Servo lidServo; const int trigPin = 9;const int echoPin = 10;const int servoPin = 3; long duration;int distance; void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); lidServo.attach(servoPin); lidServo.write(0); // Lid closed Serial.begin(9600);} void loop() { // Send ultrasonic pulse digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // … Read more
Here is a large collection of 110 sensor project ideas, especially suitable for school science exhibitions, Inspire Awards, STEM fairs, DIY YouTube projects, and low-cost working models. I have focused on projects that can be made with commonly available sensors such as IR, PIR, ultrasonic, LDR, soil-moisture, water-level, temperature, gas, rain, flame, sound, vibration, magnetic, … Read more
Sensor projects are excellent for school science exhibitions because they demonstrate how real-world problems can be solved through detection, automation, and simple electronic control systems. Many of these projects can be built using inexpensive components such as IR sensors, LDRs, ultrasonic sensors, soil-moisture sensors, gas sensors, temperature sensors, water-level sensors, and Arduino boards. Some can … Read more