High sensitivity sound sensor module for Arduino KY-037

Solderless Male to Female Jumper Leads - set of 40

This set of coloured male to female jumper leads can be used intact, or peeled appart into small sets or single leads. Great for prototyping with Arduino, Raspbery Pi and other projects

Keep track easily with 10 different colours for quick fault finding. 

4 of each: Red, Orange, Yellow, Green, Blue, Grey, Purple, Brown, Black and White

Each length: 200mm

Passive buzzer module for Arduino and other microcontroller projects

Microphone sound sensor module for Arduino and other microcontroller projects

Ultrasonic ranging module for Arduino and other microcontroller projects

Accuracy : 2mm

Example project: 

 

HC SR04 Distance Measurement Tool
 

This article will demonstrate how to build a simple distance measuring device using the HC SR05 ultrasonic sensor board. This project can be used standalone as a way of measuring short distances or, it can be incorporated into other projects that require distance measuring. This sensor works best when the two transceivers are parallel to a solid surface, at a distance between 2cm to 450cm. 

 

Here’s what you will need:

 

Tools

Jumper leads – Male to Female x 8

Breadboard (optional)

Components

HCSR04 Ultrasonic Distance Sensor x 1

Arduino Uno x 1 or Arduino Nano x 1

LCD1602B LCD Screen x 1

KY1602 Parallel to Serial Converter x 1

 

Libraries

LiquidCrystal I2C

HCSR04 ultrasonic sensor

 

Step 1

First, you will need to connect the HCSR04 sensor to the Arduino. Simply use the male to female jumper leads to connect the two together as described below and in fig.1:

HCSR04                                      Arduino

VCC-----------------------------------------5V

Trig------------------------------------------D3

Echo----------------------------------------D2

GND---------------------------------------GND

 

Step 2

Solder the KY1602 module onto the 1602 LCD screen. Pin 1 on the KY1602 module is the one closest to the 4 data and power pins. Once soldered, you can now connect the LCD display to the Arduino as shown in fig. 1.


                                                                               fig. 1

 

Step 3

Connect the Arduino to a computer and install the libraries mentioned above. If you need help installing the libraries, CLICK HERE for a quick tutorial.

 

Step 4
You can now start writing the code to get this all working:

First, clear the IDE window. Then, include the aforementioned libraries:
 

 
#include <HCSR04.h>
#include <LCD_I2C.h>
 

Initialize the HCSR04 sensor. The numbers in the brackets correspond to the trigger and echo pins respectively:

 
HCSR04 hc(3, 2);
 

Initialize the KY1602 I2C LCD driver (address 0x27 in this example) and specify the LCD display (in this case 16 characters, 2 rows):

LCD_I2C lcd(0x27, 16, 2);
 

Begin the void setup function. Initialize the LCD screen and turn on the backlight:

 
void setup()
{
  lcd.begin();
  lcd.backlight();
} 

Begin the void loop function. Set the cursor to the first character:

void loop()
{
 lcd.setCursor(0,0);

Print the distance calculated by the sensor on the LCD screen:

 lcd.print(hc.dist());
 

Add 100ms delay:

delay(100); 
}
 

The completed code should look like this:

#include <HCSR04.h>
#include <LCD_I2C.h>

HCSR04 hc(3, 2);
LCD_I2C lcd(0x27, 16, 2);

void setup()
{
  lcd.begin();
  lcd.backlight();
}

void loop()
{
 lcd.setCursor(0,0);
 lcd.print(hc.dist());
 delay(100); 
}

 

SG90 Micro Servo for Arduino and other microcontroller projects

Capacitive touch sensor module for Arduino and other microcontroller projects

One side has a 9mm x 9mm capacitive touch area, and a TTP223 touch sensor IC on the reverse.

An LED indicates when the switch is touched. It can be set to either a high or low output, and momentary or latching output by joining or not joining the A and B connections: 

PIR sensor module for Arduino and other microcontroller projects