Arduino Ultrasonic Range finder
In previous topic of Arduino Ultrasonic Distance Sensor, we have used a four-terminal Ultrasonic sensor.
Here, we will use a three-terminal Ultrasonic sensor, which is shown below:
It has three terminal GND (Ground), 5V, and SIG (signal). The process and the function of this sensor is similar to the Ultrasonic Distance Sensor.
The frequency waves travel through the air and strike the object on its path. The waves bounce back from the object and reach back to the module.
The Ultrasonic Range sensor pings the obstacles or objects with the ultrasound.
It detects the range from 3 cm or 4m or 400 cm.
The example of such a sensor is:
It is a sensor from SeedStudio. We need to switch the state between HIGH and LOW to notice the output.
Let's start the project.
The components required to create the project are listed below:
Structure of the project
The structure of the project is shown below:
The steps to connect the Ultrasonic sensor to the board are listed below:
Consider the below code:
Steps to upload the code to the project
The steps are listed below:
The connection diagram is shown below:
The output on the serial monitor will appear as: