Technical Specifications
Before getting started with the sensor, we need to mention some specifications of the sensor that can ensure proper working conditions for the sensor.
- The Arduino board needs a minimum power supply of 5V which is required to turn the Arduino on. This must be Direct Voltage.
- The Arduino board needs a Quiescent Current which is at most 2mA and a working current of 15mA. Higher current values can burn the Arduino components.
- It is preferred that the object must be placed at the center line of the sensor but it can also be present at a certain angle from the center. This is known as effectual angle which should be less than 15°.
- The distance at which an object must be placed so that it can be detected by a sensor is around 2cm – 400 cm. The accuracy of detection decreases with an increase in distance.
Arduino – Ultrasonic Sensor
Sensors are widely used for detecting devices by approximating their distance from the source. One such example of a sensor is the HC-SR04 ultrasonic sensor which uses the SONAR technique for the sensing purpose. The main feature of this sensor is to mimic the nature of bats and therefore predict the distance of objects without actually establishing contact with the device.
In this article, we will study how to design this ultrasonic sensor using the Arduino board and programming software. We will study the specifications needed for this sensor, and the methods and circuit diagrams used for designing this sensor. In addition to this, we will see the Arduino code written on IDE that will result in a sensor.
Table of Content
- Ultrasonic Sensor
- Technical Specifications
- Apparatus
- Working
- Circuit Diagram
- Arduino Code