Grove - Passive Buzzer
This is a 3-5V passive buzzer. You can change the PMW frequency to award different beep sound to get a "buzzer music". Also, the buzzer can be set as an alarm for security applications. So get one and start your own project!
Features
- Passive: Tunable passive buzzer
- Interface: Grove
Specification
| Item | Value |
|---|---|
| Voltage range | 3V–5V |
| Resonant Frequency | 2700 Hz |
| sound output | > 80dB |
| Working temperature | -20-70 °C |
| Dimensions | 20mm 20mm 10mm |
| Weight | 3g |
| Battery | Exclude |
Platform Supported
| Arduino | Raspberry Pi | |||
|---|---|---|---|---|
 |  |  |  |  |
Getting Started
Play with Arduino
Materials Required
| Seeeduino XIAO | Grove Breadboard | Grove Passive Buzzer |
|---|---|---|
 |  |  |
| Get one now | Get one now | Get one now |
Hardware Connection
The Grove interface on the breadboard and on the Grove Passive Buzzer are connected by the Grove cable.
Software
- Step1 Copy the code below to the Arduino IDE and upload. If you do not know how to update the code, please check How to upload code.
Code example1 - simply get the beep sound
int buzzer = 5; // Buzzer connect with Pin 5
int frequency = 2700; //reach the Resonant Frequency
int cycle = 1000000/frequency;
void setup()
{
Serial.begin(9600); // set the baud rate
pinMode(buzzer,OUTPUT); // set buzzer as output
}
void loop()
{
digitalWrite(buzzer,HIGH);
delayMicroseconds(cycle/2);
digitalWrite(buzzer,LOW);
delayMicroseconds(cycle/2); // run the PMW cycle
}
- Step2 After uploading the code tp the board, you will hear thr buzzer beep.
Code example2 - Use buzzer to play music
//set the corresponding notes with frequency
#define NOTE_D0 0
#define NOTE_D1 294
#define NOTE_D2 330
#define NOTE_D3 350
#define NOTE_D4 393
#define NOTE_D5 441
#define NOTE_D6 495
#define NOTE_D7 556
#define NOTE_DL1 147
#define NOTE_DL2 165
#define NOTE_DL3 175
#define NOTE_DL4 196
#define NOTE_DL5 221
#define NOTE_DL6 248
#define NOTE_DL7 278
#define NOTE_DH1 589
#define NOTE_DH2 661
#define NOTE_DH3 700
#define NOTE_DH4 786
#define NOTE_DH5 882
#define NOTE_DH6 990
#define NOTE_DH7 112
#define WHOLE 1
#define HALF 0.5
#define QUARTER 0.25
#define EIGHTH 0.25
#define SIXTEENTH 0.625
//the note part of the whole song
int tune[] =
{
NOTE_DH1, NOTE_D6, NOTE_D5, NOTE_D6, NOTE_D0,
NOTE_DH1, NOTE_D6, NOTE_D5, NOTE_DH1, NOTE_D6, NOTE_D0, NOTE_D6,
NOTE_D6, NOTE_D6, NOTE_D5, NOTE_D6, NOTE_D0, NOTE_D6,
NOTE_DH1, NOTE_D6, NOTE_D5, NOTE_DH1, NOTE_D6, NOTE_D0,
NOTE_D1, NOTE_D1, NOTE_D3,
NOTE_D1, NOTE_D1, NOTE_D3, NOTE_D0,
NOTE_D6, NOTE_D6, NOTE_D6, NOTE_D5, NOTE_D6,
NOTE_D5, NOTE_D1, NOTE_D3, NOTE_D0,
NOTE_DH1, NOTE_D6, NOTE_D6, NOTE_D5, NOTE_D6,
NOTE_D5, NOTE_D1, NOTE_D2, NOTE_D0,
NOTE_D7, NOTE_D7, NOTE_D5, NOTE_D3,
NOTE_D5,
NOTE_DH1, NOTE_D0, NOTE_D6, NOTE_D6, NOTE_D5, NOTE_D5, NOTE_D6, NOTE_D6,
NOTE_D0, NOTE_D5, NOTE_D1, NOTE_D3, NOTE_D0,
NOTE_DH1, NOTE_D0, NOTE_D6, NOTE_D6, NOTE_D5, NOTE_D5, NOTE_D6, NOTE_D6,
NOTE_D0, NOTE_D5, NOTE_D1, NOTE_D2, NOTE_D0,
NOTE_D3, NOTE_D3, NOTE_D1, NOTE_DL6,
NOTE_D1,
NOTE_D3, NOTE_D5, NOTE_D6, NOTE_D6,
NOTE_D3, NOTE_D5, NOTE_D6, NOTE_D6,
NOTE_DH1, NOTE_D0, NOTE_D7, NOTE_D5,
NOTE_D6,
};
//the duration time of each note
float duration[] =
{
1, 1, 0.5, 0.5, 1,
0.5, 0.5, 0.5, 0.5, 1, 0.5, 0.5,
0.5, 1, 0.5, 1, 0.5, 0.5,
0.5, 0.5, 0.5, 0.5, 1, 1,
1, 1, 1 + 1,
0.5, 1, 1 + 0.5, 1,
1, 1, 0.5, 0.5, 1,
0.5, 1, 1 + 0.5, 1,
0.5, 0.5, 0.5, 0.5, 1 + 1,
0.5, 1, 1 + 0.5, 1,
1 + 1, 0.5, 0.5, 1,
1 + 1 + 1 + 1,
0.5, 0.5, 0.5 + 0.25, 0.25, 0.5 + 0.25, 0.25, 0.5 + 0.25, 0.25,
0.5, 1, 0.5, 1, 1,
0.5, 0.5, 0.5 + 0.25, 0.25, 0.5 + 0.25, 0.25, 0.5 + 0.25, 0.25,
0.5, 1, 0.5, 1, 1,
1 + 1, 0.5, 0.5, 1,
1 + 1 + 1 + 1,
0.5, 1, 0.5, 1 + 1,
0.5, 1, 0.5, 1 + 1,
1 + 1, 0.5, 0.5, 1,
1 + 1 + 1 + 1
};
int length;//define the number of notes
int buzzer = 5; //set the buzzer Pin
void setup()
{
pinMode(buzzer, OUTPUT); // set the buzzer as output mode
length = sizeof(tune) / sizeof(tune[0]); //count the number of note
}
void loop()
{
for (int x = 0; x < length; x++) //"sing" the note one by one
{
tone(buzzer, tune[x]); //output the "x" note
delay(400 * duration[x]); //rythem of the music,it can be tuned fast and slow by change the number"400"
noTone(buzzer);//stop the current note and go to the next note
}
delay(5000);//after playing the whole song, delay for 5 sec
}
- Step3 After uploading the code to the board, you can hear a music from the buzzer.
Play with Raspberry Pi
Materials Requied
| Raspberry Pi 4B(4GB) | Grove Base Hat for Raspberry Pi | Grove Digital PIR Motion Sensor |
|---|---|---|
 |  | |
| Get one now | Get one now | Get one now |
Hardware Connection
Connect the Buzzer with "PWM" on the Grove Base Hat.
Software Code
- Step 1 Install Grove.py on your Raspberry.
One-click installation, quick start, what ever you call, with the single command below, we can install/update all dependencies and latest grove.py.
:::attention If you are using Raspberry Pi with Raspberrypi OS >= Bullseye, you cannot use this command line. :::
curl -sL https://github.com/Seeed-Studio/grove.py/raw/master/install.sh | sudo bash -s -
tip
if everything goes well, you will see the following notice.
```
Successfully installed grove.py-0.5
#######################################################
Lastest Grove.py from github install complete !!!!!
#######################################################
``` -
Besides the one-click installation, you can also install all the dependencies and latest grove.py step by step.
:::attention If you are using Raspberry Pi with Raspberrypi OS >= Bullseye, you have to use this command line only with Python3. :::
git clone https://github.com/Seeed-Studio/grove.py
cd grove.py
# Python2
sudo pip install .
# Python3
sudo pip3 install .
- Step 2 Create a python file for the code.
cd grove.py
nano example.py
- Step 3 Copy the following code to the python file
#!/usr/bin/env python
import time
from mraa import getGpioLookup
from upm import pyupm_buzzer as upmBuzzer
def main():
# Grove - Buzzer connected to PWM port
buzzer = upmBuzzer.Buzzer(getGpioLookup('GPIO12'))
CHORDS = [upmBuzzer.BUZZER_DO， upmBuzzer.BUZZER_RE， upmBuzzer.BUZZER_MI，
upmBuzzer.BUZZER_FA， upmBuzzer.BUZZER_SOL， upmBuzzer.BUZZER_LA，
upmBuzzer.BUZZER_SI]
for i in range(0， len(CHORDS)):
buzzer.playSound(CHORDS[i]， 500000)
time.sleep(0.1)
del buzzer
print('application exiting...')
if __name__ == '__main__':
main()
- Step 4 Run the program
sudo chmod +x example.py
sudo ./example.py
If everything goes well, you can hear"do,re,mi,fa,so.la.xi".
Schematic Online Viewer
Resource
- [PDF] MLT_8530_DATASHEET
- [PDF] Hardware schematic
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