Questions tagged [buzzer]

An electrical device, similar to a bell, that makes a buzzing noise and is used for signaling.

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permanent shutdown of the alarm

#include <RTClib.h> #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display int nowHr, ...
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Buzzer+Push button+arduino

I want to stop the sound of a buzzer after I push the push button. I tried a code, but when the button is not pushed, the buzzer continue to make sound. How can I fixed it? const int pin_contact= 6; ...
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Arduino buzzer code sequence not triggering

I have a problem with my arduino buzzer: the code should be doing the following: I have a security system where in order to open the door you have to enter a 4 digit code from the remote. If the code ...
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44 views

How to close humidity sensor at specific humidity

I am using dht humidity and temperature sensor on arduino and i would like to add relay and buzzer on the system. What I would like to do is to close it via buzzer and on 65% humidity run buzzer. The ...
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Piezoelectric buzzer interfacing with arduino without using any library

I want to learn programming from the roots, so i have started learning interfacing different modules with arduino without using any libraries. i want to learn how to interface piezoelectric buzzer ...
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2answers
120 views

Can we generate 20kHz tone with normal buzzer in arduino?

Can normal buzzer be used for generating high frequency audio and if this is possible then can normal microphone module be able to detect the same frequency range(15 kHz - 20 kHz). Here is the ...
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1answer
104 views

Is this a feasible circuit?

The last couple months I’ve been working on this project, I’m nearing its end and I’m getting really excited! However, this is still pretty new to me and so I was hoping my electrical diagram/...
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35 views

esp-01 with rf receiver keeps crashing

SOLVED: after may hours of testing i have solved the problem. it turned out to not be a software issue. the power supply i was using did not have a flyback diode and thus caused large voltage spikes ...
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30 views

Why is my buzzer always on?

I wanted to make a buzzer go off when the distance measured by the ultrasonic sensor becomes more than 100cm. The things used in this project are a 4x4 keypad, an hc-sr04 ultrasonic sensor, and a ...
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2answers
112 views

Arduino piezo-buzzer melody for car alarm

I would like to play car alarm sound through Arduino buzzer - something like this https://youtu.be/nuPHwijMsIg Does anybody have a library for such melody?
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128 views

Error compiling for board Arduino Mega or Mega 2560

#include <Servo.h> // Include Servo Library #include <NewPing.h> // Include Newping Library #include<SoftwareSerial.h> #include <dht.h> //Include the DHT library ...
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3answers
409 views

Why is my passive buzzer clicking instead of buzzing when set to HIGH?

everyone. I am working on learning Arduino from scratch and I am on the buzzer lesson. The tutorial I am following consists on writing a code to get an input from the user in the form of an integer ...
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66 views

How to run my buzzer for few more seconds after switching off

This is a basic level lazer alarm project. When anyone crosed or kept their hands on the lazer. buzzer starts working but when they took their hand from lazer light buzzer stops. But i want even after ...
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49 views

Speaker & Piezo when beeping both cause CapacitiveSense to sense

I am using this speaker: CUI part number CSS-I4B20-SMT-TR as an alarm on a clock using atmega328 chip and Arduino IDE with the tone function. Works great. I am also using Arduino CapacitiveSensor.h ...
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678 views

Sound quality is poor using a piezo in TinkerCad

I did a quick search and couldn't seem to find this question posted already, but I'm sure it must have so forgive me if it's a repeat. I'm using a piezo and Arduino on TinkerCad to produce notes ...
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135 views

Is there a way for keypad to stop the buzzer while it is running?

I am new to arduino, currently I am looking for a way to make the keypad able to stop the buzzer making a siren alarm when password are keyed in wrong and able to move into password screen by pressing ...
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770 views

is there any archives of melody tones for buzzer used in arduino?

I am using buzzer in my arduino and I read some articles about using array of tones(notes in music) with different frequencies to play play pleasant melodies.however, I do not find any site and ...
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124 views

Buzzer interfere with thermistor reading

This is how i wired the thermistor and buzzer: simulate this circuit – Schematic created using CircuitLab And the code: #define RT0 10000 #define B 3977 #define R 10000 float RT, VR, ln, TX, ...
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232 views

How to stop the screeching noise that comes from buzzer?

I use sfm-27 dc 3-24v Buzzer. It sounds fine if i close the buzzer using my palm but if i doesn't close it, it will make a screeching noise. I play melody using the buzzer so the sound is important. ...
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232 views

Why Buzzer interfere with PWM?

This is the code: #define TMST A2 // Thermistor #define BZR 10 // Buzzer #define FanP 11 // Fan void setup() { DDRD = B11000000; DDRB = B00001111; DDRC = B00000000; TCCR2B = TCCR2B & ...
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1answer
1k views

how to set buzzer on and off

I have a project that require me to use magnetic contact sensor. I will put the sensor at the door. So the idea is i want every time someone open the door, the buzzer will make a sound, but it will ...
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1answer
3k views

Tone() conflicts with IRremote library (multiple definition of `__vector_7')

I have just started with Arduino and C++ so I apologise if my question is very basic. I am trying to use tone() with a passive buzzer to create a sound while also using the IRremote library for a ...
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2answers
2k views

Current consumption of a buzzer

I want to use the buzzer KPEG2000 in my Arduino application. I would like to know if a GPIO can directly drive this buzzer, without destroy the uC (a GPIO can deliver 40 mA max). In the datasheet, we ...
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1answer
51 views

Can a Arduino Uno handle all these components?

Its my first project with an Arduino, so please bear with the dumb questions. For this project of mine, I need an Ultrasonic Sensor, a Gyroscope, a Buzzer, three push buttons and an 16x2 LCD. Can ...
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55 views

Shall an active piezo buzzer module draw as much as 10mA on its signal pin?

I have connected an active piezo buzzer to my arduino: KY-012 Active buzzer module. I was a bit surprised that it drew like ~10mA on the signal pin from my nodemcu, which I find a bit weird, since ...
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How to stop and repeat a melody using a button?

How can we make our melody stop when we press the button the first time and repeat the melody when we press the button the second time? // Noterna defineras #define NOTE_B0 31 #define NOTE_C1 33 #...
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601 views

Multiple Servo motors with an ultrasonic sensor

I am building a robot arm with 6 servo motors that works with an ultrasonic sensor. The purpose of the program is when an object is detected at 20 cm (fixed position) from the sensor, the buzzer and ...
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3answers
5k views

Passive buzzer works with analogWrite(), but not with digitalWrite(). It also has constant static noise

I have a YL-44/MH-FMD passive piezo buzzer hooked up to an ESP8266/NodeMCU. It's connected like this: Buzzer ---> NodeMCU - GND ---> G - VCC ---> 3V - I/O ---> D2 This code makes a clear beep. ...
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563 views

Won't break out of for loop

I'm new to Arduino and I'm trying to use PWM to generate a tone through a buzzer. I've created a for loop, however, the for loop doesn't seem to break when the variable ms is < 1000000. int ...
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4answers
90 views

help with a loop

I recently got into programing and I'm making an alarm. I cant figure out how to make a buzzer loop. I have two blinking LED's and two fading ones. Now I plan to have sound and it won't work. It only ...
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3k views

Arduino - Playing WAV files with a buzzer

I have developed an Arduino program that plays a WAV file from the SD card using a speaker. This is the circuit schematic The sketch I'm using is based on TMRpcm library and PWM output #include <...
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2answers
647 views

How can you have two blinking leds and a fading one

I am trying to make a alarm and I have two blinking leds (red and blue). They work fine but I want two more that fade in and out. I have a buzzer on it too. I am very new to programming. By the way, ...
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1answer
255 views

How to detect when intercom is ringing?

For my apartment, I need to check when intercom is ringing and call an API in that case. I was thinking about using an AC input / DC output relay, since the buzzer signal is an AC signal. Is there an ...
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1answer
160 views

everything works independitly but not together. Piezo not generating a tone

My goal with the code is simple. Let the Piezo buzz when temperature reaches 25 degrees. My piezo is hooked up correctly, because It makes a buzz when the arduino boots or when I put this line of code ...
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1answer
139 views

Arduino - Push Button State Problem

My problem is I want the buzzer to stop after a certain amount of time, regardless if it is still pressed or not. I have tried to implement a boolean statement to the code but to no avail(I'm not ...
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2answers
1k views

Stop Arduino Timer after some seconds

I'm building a basic program that when a button is pressed, a buzzer comes on. I would like however to make it so that the buzzer stops after a short period of time (e.g. 5-7 seconds). Here is the ...
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3answers
5k views

Is there a way to play .mp3 files from an SD card on Arduino?

Is there a way to have mp3 files on an SD card in the SD card shield for the Arduino and play an mp3 file on that SD card with a buzzer? If possible also with something like: playmp3(thismp3.mp3); ...
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1answer
112 views

Joysitck with servo, LED array and buzzer [closed]

Does anybody know of a sketch that can turn a single servo 180 degrees clockwise/counterclockwise with the x axis of a joystick, light a bar graph LED with the Y axis, and sound a buzzer when the ...
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5answers
1k views

Emergency Vehicle - Make two LEDs flash with buttons and a passive buzzer change sound

My Dad and I are just learning how to use my new UNO. We have learned how to make leds flash at the touch of a button. We have also learned how to make a passive buzzer sound at the touch of a ...
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3answers
66 views

How do I create a constant loop with an event that only occurs once?

I am currently working in void loop() and have setup a distance meter that constantly checks the distance. Once the distance threshold is met, a function is called. Now I only need this function to ...
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3answers
2k views

How can I loop for a set amount of time when a condition is met?

I'm trying to create an Arduino project with a light sensor and a buzzer. The idea is that when the sensor detects that the lights have gone off, the buzzer will sound for 5 seconds. At some point, ...
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1answer
301 views

What is wrong with my state machines?

My goal is to make an automatic gate and garage door, and it has a servo as the lock mechanism on the gate, and alarm systems that notify when the gate or garage door is open too long, more than the ...
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1answer
311 views

Execute function until called again?

I am building a simple security system with my Arduino Uno. I have an alarm() function: void alarm() { tone(8, 3300, 200); delay(200); tone(8, 3000, 200); delay(200); } When I call it in the ...
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1answer
4k views

How do I make specific tones with a piezo buzzer?

I am using a piezo buzzer and fiddling around with it a little bit. I currently have different tones with delays in between and I have to do a lot of trial and error for the piezo buzzer to play ...
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2answers
3k views

Start/Stop/Reset the melody using buttons

I have 2 buttons. Button 1 will start/stop the melody while the button 2 will reset the melody. My melody is "Happy Birthday". How am I going to use the buttons to start/stop/reset the melody? Here'...
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1answer
260 views

Need to filter low voltage from a piezo buzzer circuit [closed]

I have a 6-28VDC piezo buzzer I'm using at 24VDC. The line has 3-4 VDC when the output is off, which has a soft but annoying buzzer constantly. What the the easiest way to filter that out so I only ...
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1k views

Adding external power supply to any arduino connected component

I have an Arduino Pro Mini 3.3v and the voltage is too small for my buzzer to ring loudly. I want to add a 9v battery to power the buzzer. This is my current circuit: Arduino (pin 9) => Buzzer +ve ...
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1answer
1k views

Controlling buzzer with assembly

I want to make a piezo buffer beeping with assembly code, but i haven't managed to yet. I have an Arduino UNO board (ATMega328p) and using avra and avrdude to build and load. The buzzer just stay ...
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3answers
12k views

Circuit with buzzer not working :(

so I have a circuit with a buzzer and a resistor: This circuit should be working, but for some reason the buzzer doesn't sound. I pushed the buzzer into the breadboard as hard as I could, I put the + ...
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1answer
564 views

Error when using buzzer and IR sensor

I am doing code for IR sensor. My problem is when I put this code (below) for buzzer, there will be error. C:\Program Files\Arduino\hardware\arduino\avr\cores\arduino/Tone.cpp:536: multiple ...