How to test buzzer

[Djsarkar]

Hi
My buzzer is not working I don't know why it's not working

Buzzer gnd ---- gnd
Buzzer VCC --- 5V
Buzzer S --- 5V

When I do above connection buzzer doesn't gives a sound?

I have attached photo of buzzer. Any help would be appreciate

 

[Harald Kapp]

There are different types of buzzers:

1. With integrated oscillator. These usually have two wires and start buzzing when a voltage is applied.
2. Without integrated resistor, These require an external oscillator and have a third pin to allow creating the necessary feedback. From your photo I take it you have this kind of buzzer. It will not work on DC voltage without an oscillator.

Rad more about piezo buzzers e.g. here.

 

[Djsarkar]

There are different types of buzzers:

1. With integrated oscillator. These usually have two wires and start buzzing when a voltage is applied.
2. Without integrated resistor, These require an external oscillator and have a third pin to allow creating the necessary feedback. From your photo I take it you have this kind of buzzer. It will not work on DC voltage without an oscillator.

Rad more about piezo buzzers e.g. here.

I have PIC18F45K80. I am using MPLABX 5.40 and XC8 2.30.

I have written code that supposed to sound the buzzer for 3 seconds and two seconds of silence and then repeat. When I Run code buzzer doesn't give any sound

#define _XTAL_FREQ 8000000
#include <xc.h>
// PIC18F45K80 Configuration Bit Settings
// 'C' source line config statements
// CONFIG1L
#pragma config RETEN = OFF      // VREG Sleep Enable bit (Ultra low-power regulator is Disabled (Controlled by REGSLP bit))
#pragma config INTOSCSEL = HIGH // LF-INTOSC Low-power Enable bit (LF-INTOSC in High-power mode during Sleep)
#pragma config SOSCSEL = HIGH   // SOSC Power Selection and mode Configuration bits (High Power SOSC circuit selected)
#pragma config XINST = OFF       // Extended Instruction Set (Enabled)
// CONFIG1H
#pragma config FOSC = INTIO2    // Oscillator (Internal RC oscillator)
#pragma config PLLCFG = OFF     // PLL x4 Enable bit (Disabled)
#pragma config FCMEN = OFF      // Fail-Safe Clock Monitor (Disabled)
#pragma config IESO = OFF       // Internal External Oscillator Switch Over Mode (Disabled)
// CONFIG2L
#pragma config PWRTEN = OFF     // Power Up Timer (Disabled)
#pragma config BOREN = SBORDIS  // Brown Out Detect (Enabled in hardware, SBOREN disabled)
#pragma config BORV = 3         // Brown-out Reset Voltage bits (1.8V)
#pragma config BORPWR = ZPBORMV // BORMV Power level (ZPBORMV instead of BORMV is selected)
// CONFIG2H
#pragma config WDTEN = OFF      // Watchdog Timer (WDT disabled in hardware; SWDTEN bit disabled)
#pragma config WDTPS = 1048576  // Watchdog Postscaler (1:1048576)
// CONFIG3H
#pragma config CANMX = PORTB    // ECAN Mux bit (ECAN TX and RX pins are located on RB2 and RB3, respectively)
#pragma config MSSPMSK = MSK7   // MSSP address masking (7 Bit address masking mode)
#pragma config MCLRE = ON       // Master Clear Enable (MCLR Enabled, RE3 Disabled)
// CONFIG4L
#pragma config STVREN = ON      // Stack Overflow Reset (Enabled)
#pragma config BBSIZ = BB2K     // Boot Block Size (2K word Boot Block size)
// CONFIG5L
#pragma config CP0 = OFF        // Code Protect 00800-01FFF (Disabled)
#pragma config CP1 = OFF        // Code Protect 02000-03FFF (Disabled)
#pragma config CP2 = OFF        // Code Protect 04000-05FFF (Disabled)
#pragma config CP3 = OFF        // Code Protect 06000-07FFF (Disabled)
// CONFIG5H
#pragma config CPB = OFF        // Code Protect Boot (Disabled)
#pragma config CPD = OFF        // Data EE Read Protect (Disabled)
// CONFIG6L
#pragma config WRT0 = OFF       // Table Write Protect 00800-01FFF (Disabled)
#pragma config WRT1 = OFF       // Table Write Protect 02000-03FFF (Disabled)
#pragma config WRT2 = OFF       // Table Write Protect 04000-05FFF (Disabled)
#pragma config WRT3 = OFF       // Table Write Protect 06000-07FFF (Disabled)
// CONFIG6H
#pragma config WRTC = OFF       // Config. Write Protect (Disabled)
#pragma config WRTB = OFF       // Table Write Protect Boot (Disabled)
#pragma config WRTD = OFF       // Data EE Write Protect (Disabled)
// CONFIG7L
#pragma config EBTR0 = OFF      // Table Read Protect 00800-01FFF (Disabled)
#pragma config EBTR1 = OFF      // Table Read Protect 02000-03FFF (Disabled)
#pragma config EBTR2 = OFF      // Table Read Protect 04000-05FFF (Disabled)
#pragma config EBTR3 = OFF      // Table Read Protect 06000-07FFF (Disabled)
// CONFIG7H
#pragma config EBTRB = OFF      // Table Read Protect Boot (Disabled)


void Port_pins_Initialized (void)
{
    LATA = LATB = LATC = LATD = LATE =  0;
    TRISA = 0b0000000;// all are output, Unused
    TRISB = 0b0000000;// Buzzer connected to B0
    TRISC = 0b0000000;// all are output, Unused
    TRISD = 0b0000000;//
    TRISE = 0b0000000;// All are output, Unused
 
    ANCON0 = 0; // digital port
    ANCON1 = 0; // digital port
    CM1CON = 0; // Comparator off
    CM2CON = 0; // Comparator off
    ADCON0 = 0; // A/D conversion Disabled
}

void main(void)
{
  Port_pins_Initialized ();
 
    while (1)
    {
        LATBbits.LATB0 = 0;//Buzzer on
        __delay_ms(3000); // Wait for 3 seconds
        
        LATBbits.LATB0 = 1; //Buzzer off
        __delay_ms(2000);  // Wait for 2 seconds

    }
}

 

[Nanren888]

Can you share a part number for the buzzer? Or a data sheet?

 

[Harald Kapp]

Your code applies DC to the buzzer (3 s on, 2 s off). This doesn't work, as explained. You'll need either:

1. A buzzer suitable for DC (example)
2. An external oscillator for your 3-wire buzzer (example)
3. Replace the on-instruction
   LATBbits.LATB0 = 0;//Buzzer on
   __delay_ms(3000); // Wait for 3 seconds
   in your code by a call to a subroutine that generates an oscillating signal. When you apply an oscillating supply voltage to the "+" and "-" of the buzzer it will emit sound at the frequency of the oscillating supply.

 

[Djsarkar]

Your code applies DC to the buzzer (3 s on, 2 s off). This doesn't work, as explained.

Okay I have a one kds 11.0592 crystal Can it be used?

 

[Nanren888]

No. That won't help.
It may be that your buzzer is a sort of speaker used for buzzers and that you need to give it a sound signal, an oscillation, instead of just on and off.
If your "buzzer" needs an oscillating signal, you can make this with the micro, the PIC, without the crystal.
Sorry, not a PIC person. Google PIC and buzzer?
I got this as the first hit. It seems to talk sense.
https://microcontrollerslab.com/active-passive-buzzer-interfacing-pic/

It seems similar to that suggested above, for the same reasons.

Read more about piezo buzzers e.g. here.

Can you tell us the type of buzzer you have, so we can check which sort it is.

 

[Djsarkar]

Can you share a part number for the buzzer? Or a data sheet?

There is no part number on buzzer and board. I am struggling to get exact datasheet. That's why having problem

I have posted photo of module Take a look at photos. .

 

[Harald Kapp]

I have posted photo of module

3 pins -> you need an external oscillator.

 

[bertus]

Hello,

The shown buzzer seems to be available in two versions.
The passive KY-006 : https://www.thegeekpub.com/wiki/sensor-wiki-ky-006-passive-piezo-buzzer-module/
The active KY-012 : https://www.thegeekpub.com/wiki/sensor-wiki-ky-012-active-piezo-buzzer-module/

It is hard to tell wich version you have.

Bertus

 

[Djsarkar]

3 pins -> you need an external oscillator.

But The link Bertus posted does not use external oscillator

 

[Harald Kapp]

Unless you are able to tell us the specific type of your module all we can do is guess. @bertus found 2 modules. We are not even sure yours is one of them. Also, Bertus linked to 2 different versions. The passive one requires an oscillator (done in software in the code example on the linked website, as I stated in my post #5). Only the active one works without oscillator.
As your module doesn't work from DC only, I suppose it is of the passive type.

 

[bertus]

Hello,

On the given page there are arduino programs to generate a sound with the buzzer.
The passive uses fast switching of the arduino output to generate the oscilaltion frequency.

Here is an other page that uses the passive buzzer with the arduino:
https://www.phippselectronics.com/using-the-small-passive-buzzer-module-ky-006-with-arduino/
Here is also an other example using the raspberry PI:
http://www.pibits.net/code/ky-006-passive-buzzer-module-raspberry-pi-example.php

Bertus

 

[Nanren888]

Take a look at photos.

Saw them. Generally people buy such things, so they often have a link to the site that they got them from & with that a part number, or datasheet.
I understand that in your case they arrived by a method that provided no such part number. Got it.

People are working quite hard to try to help.
I suspect the answer to your issue has been posted a couple of times now.
The PIC can make an oscillating signal, with a program, that when applied to the "buzzer" will be turned into a sound. Follow carefully what the other guys are telling you and you'll have a workable solution. Let them know which bits you didn't understand and you;ll find them patient and helpful.
Enjoy.

 

[bertus]

Hello,

The buzzer could be part of the arduino sensor kit:
https://tkkrlab.nl/wiki/Arduino_37_sensors

Bertus

 

[Djsarkar]

If your "buzzer" needs an oscillating signal, you can make this with the micro, the PIC, without the crystal.

Can you explain how we generate a oscillating signal with a any micro for buzzer? Once I understand I can write code.

Pic18f45k80 has internal oscillator

 

[ratstar]

A buzzer that needs an external oscillator isnt a buzzer, its a speaker.

 

[Harald Kapp]

Can you explain how we generate a oscillating signal with a any micro for buzzer?

Do you read our answers at all? As I stated in post #12 there's a code example in the link to the passive buzzer @bertus gave you in post #5.

 

[Djsarkar]

Do you read our answers at all? As I stated in post #12 there's a code example in the link to the passive buzzer @bertus gave you in post #5.

I don't understand arduino code Can you help me to understand delay line

// define the pin we will connect to
int buzzer = 12 ;
 
void setup ()
{
  // set our pin to output mode
  pinMode (buzzer, OUTPUT) ;
}
 
 
void loop ()
{
  // loop through frequencies to generate alarm sound
  unsigned char i;
  while (1)
  {
    //Frequency 1
    for (i = 0; i <80; i++)
    {
      digitalWrite (buzzer, HIGH) ;
      delay (1) ;
      digitalWrite (buzzer, LOW) ;
      delay (1) ;
    }
    //Frequency 2
    for (i = 0; i <100; i++)
    {
      digitalWrite (buzzer, HIGH) ;
      delay (2) ;
      digitalWrite (buzzer, LOW) ;
      delay (2) ;
    }
  }
}

In the code there is two for loops one run 80 times and other for 100 times. In the loop we set buzzer pin at high state then gives delay and then set to low state

What does it say delay (2) ; Is it 2ms delay or 2us delay ?

 

[Harald Kapp]

In the loop we set buzzer pin at high state then gives delay and then set to zero

An alternating sequence of high and low (1 and 0) generates a square wave at the output to drive the buzzer.

What does it say delay (2)

delay() is in ms.