40KHz Dual Function Ultrasonic Transceiver Diameter 12mm (Transmitter + Receiver)

Description

What it is

The 40KHz ultrasonic transceiver is a component that combines the functions of transmitter and receiver in a single device. With a diameter of 12mm, this component is ideal for Arduino projects where distance measurement or obstacle detection is required.

Features

• Diameter: 12 mm
• Frequency: 40 KHz
• Function: Transmitter and receiver

What it is for

The ultrasonic transceiver can be used to create home alarm systems that alert when an object comes within a certain distance. It can also be configured to turn on an LED or send a WiFi notification.

Tutorial: How to use the 12MM 40KHz Ultrasonic Transceiver

The dual-function ultrasonic transceiver is an essential component for distance measurement projects, such as robotics and security systems. Ideal for both beginners and more experienced makers.

What you need

• Arduino Uno
• USB Connection
• Jumper Wire

Steps

1. Connect the receiver to the VCC and GND pins of the Arduino.
2. Connect the Trig pin of the receiver to a digital pin of the Arduino (for example, pin 7).
3. Connect the Echo pin to the next digital port (for example, pin 8) to receive data.
4. Download and install the NewPing library on the Arduino IDE.
5. Load the sketch below onto your Arduino.
6. Check that the serial monitor output shows the correct distances in centimeters.
7. If necessary, adapt the code to integrate it with other components or features of the project.
8. Test the receiver in various lighting and environmental conditions.

Example code

// Includi la libreria NewPing
#include <NewPing.h>

// Definisci il numero di piazze tra Trig ed Echo
#define NUM_PULSES 20

// Crea un oggetto NewPing per la ricetrasmittente
NewPing sonar(7, 8, NUM_PULSES);

void setup() {
  Serial.begin(9600);
}

void loop() {
  // Leggi la distanza e memorizzala in una variabile
  int distance = sonar.ping_cm();
  // Stampa la distanza al monitor seriale
  Serial.print("Distanza: ");
  Serial.println(distance);
  delay(50); // Attendi prima di rilevare nuovamente
}

Mini project

Create a home alarm system that alerts when an object comes within a certain distance. Configure the receiver to turn on an LED or send a notification via WiFi.

Common mistakes

• Do not verify the correct orientation of the pins during connection.
• Do not use an insufficient timer between the Trig and Echo buttons.
• Ignore the presence of reflective or absorptive obstacles that can alter the measurements.
• Do not update the NewPing library to the latest version.

Recommended accessories

• Arduino Uno
• USB and Jumper Connections
• NewPing Library for Arduino IDE

Frequently asked questions

What is the measurement range of the transceiver?
Check the product datasheet.

How can I improve the accuracy of the measurements?
Optimize the environment by reducing background noise and ensure there are no reflections from metallic surfaces.