This uses Arduino MEGA connected to a Ultrasonic sensor and and I2C LCD screen to display distance from the sensor This code will check distance and indicate if an obstacle/person is away for 5 ...

#As you could see in this image the Arduino UNO is connected to the Ultrasonic Sensor as well as Bread Board. #Arduino's Digital pins are connected to the Bread board ...

This is a very simple digital distance meter, which you can add to your water-level indicator circuit to show water level ... It is built around Arduino Uno board, HC-SR04 ultrasonic sensor, Nokia ...

The code for the same is shown below We already know that the Arduino will sense 40 interrupts when the wheel makes one complete rotation. So for every one rotation made by the wheel it is evident ...

Abstract: The water level indicator project utilizes an Arduino Uno microcontroller ... users can switch the motor on or off from a distance, providing a significant level of flexibility and control.