So, I had this idea for an automatic light controller using an Arduino and an ultrasonic sensor (HC-SR04) to turn on a light whenever someone crosses a certain distance. The idea was pretty simple: you walk near the sensor, and it detects your pr…
Water wastage due to tank overflow is a common issue in many households, especially in developing countries. This problem not only leads to significant water loss but also results in unnecessary expenditure on water bills. To address this issue…
PID control is a widely used control method in industrial and manufacturing processes, and it can also be applied to control the speed of DC fans. In this tutorial, we will show you how to use an Arduino, an ultrasonic sensor(HC-SR04), and a PID al…
In this Arduino project, ultrasonic sensor HC-SR04 is used to detect intruders. Two LEDs and a servo motor is also connected to Arduino. The two led give visual information about intruder and the servo motor control can be used as an actuator to c…
