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YwRobot Big Speaker Module for Arduino: Wiring, Code, and Projects
YwRobot big speaker module
The YwRobot Big Speaker Module is a small, amplified speaker module from YwRobot, designed for various electronic DIY projects. Unlike a regular speaker, it has a built-in driver circuit, allowing it to be connected directly to a microcontroller and driven by its IO pins. Additionally, it can be used as a mini speaker by connecting to the headphone jack of a phone or computer via its 3.5mm audio interface.
The difference between it and passive/active buzzers.
| TYPE | CAN PLAY MUSIC | CONTROL METHOD | INTERNAL STRUCTURE | SOUND VOLUME |
|---|---|---|---|---|
| Active Buzzer | Cannot | High level → sound | Built-in oscillator | Loud |
| Passive Buzzer | Can play simple melodies | Requires PWM frequency control | Coil + metal diaphragm | Medium |
| YwRobot Big Speaker Module | Can play complex melodies | PWM / tone() / custom waveforms | Small speaker + driver amplifier | Louder and fuller sound |
Specifications
| Size | 41 x 32mm |
| Fixed Hole | 3mm |
| Loudspeaker Power | 0.5W / 8Ω |
| Speaker Diameter | 29.3mm |
| Power Amplifier Chip | NS8002 |
| Voltage | 2–5V |
| Port | Digital |
| Platform | Arduino, MCU |
Applications and Use Cases
Educational Projects
The YwRobot Big Speaker Module is a great tool for educational projects where students can learn about sound generation, audio synthesis, and basic electronics. It can be integrated with various sensors or interactive elements.
Sound Effects in DIY Projects
For DIY projects like alarms, robots, or interactive toys, the speaker module provides a simple solution for adding sound effects. It can be used to generate beeps, warnings, or any other custom audio output.
IoT Projects
In IoT projects, the YwRobot Big Speaker Module can be used to provide audio feedback or alerts. For example, a smart home system could use this module to sound an alert when a security sensor is triggered.
There are two ways to use the YwRobot big speaker module.
| PIN | FULL NAME | FUNCTION |
|---|---|---|
| G | GND | Ground |
| V | VCC | Power Supply (typically 5V) |
| S | Signal | Audio/Buzzer Signal Input |
Method 1: As an External Speaker
It can be used as an external speaker. Use a 3.5mm audio input cable to connect the ‘S’ and ‘G’ interfaces, then plug it into the headphone jack of a phone or computer. Supply 5V DC power to the ‘VCC’ pin, and you can use it as an external speaker.
Method 2: Using the Arduino tone() Function
Use the Arduino tone() function to send square waves of different frequencies to the ‘SIG’ pin. This will allow you to play your pre-programmed music.
Arduino tone() Function Overview
tone(pin, frequency, duration);
| PARAMETER NAME | TYPE | DESCRIPTION |
|---|---|---|
| pin | int | Arduino pin for outputting sound (e.g., D2, D3, D5, D6, D9, D10, etc.) |
| frequency | unsigned int | Sound frequency (unit: Hz), for example, 440Hz = A4 note |
| duration (optional) | unsigned long | Playback duration (unit: milliseconds ms) |
tone(6, 1000, 200);
Play a 1kHz tone for 200ms.
Example Code
| Pin | Full Name | ARDUINO |
|---|---|---|
| G | GND | GND |
| V | VCC | Power Supply (typically 5V) |
| S | Signal | 8 |
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978
int melody[] = {
NOTE_E4, NOTE_E4, NOTE_E4, NOTE_C4, NOTE_E4, NOTE_G4, NOTE_G3,
NOTE_C4, NOTE_G3, NOTE_E3, NOTE_A3, NOTE_B3, NOTE_AS3, NOTE_A3, NOTE_G3, NOTE_E4, NOTE_G4, NOTE_A4, NOTE_F4, NOTE_G4, NOTE_E4, NOTE_C4, NOTE_D4, NOTE_B3,
NOTE_C4, NOTE_G3, NOTE_E3, NOTE_A3, NOTE_B3, NOTE_AS3, NOTE_A3, NOTE_G3, NOTE_E4, NOTE_G4, NOTE_A4, NOTE_F4, NOTE_G4, NOTE_E4, NOTE_C4, NOTE_D4, NOTE_B3,
NOTE_G4, NOTE_FS4, NOTE_E4, NOTE_DS4, NOTE_E4, NOTE_GS3, NOTE_A3, NOTE_C4, NOTE_A3, NOTE_C4, NOTE_D4, NOTE_G4, NOTE_FS4, NOTE_E4, NOTE_DS4, NOTE_E4, NOTE_C5, NOTE_C5, NOTE_C5,
NOTE_G4, NOTE_FS4, NOTE_E4, NOTE_DS4, NOTE_E4, NOTE_GS3, NOTE_A3, NOTE_C4, NOTE_A3, NOTE_C4, NOTE_D4, NOTE_DS4, NOTE_D4, NOTE_C4,
NOTE_C4, NOTE_C4, NOTE_C4, NOTE_C4, NOTE_D4, NOTE_E4, NOTE_C4, NOTE_A3, NOTE_G3, NOTE_C4, NOTE_C4, NOTE_C4, NOTE_C4, NOTE_D4, NOTE_E4,
NOTE_C4, NOTE_C4, NOTE_C4, NOTE_C4, NOTE_D4, NOTE_E4, NOTE_C4, NOTE_A3, NOTE_G3
};
int noteDurations[] = {
8,4,4,8,4,2,2,
3,3,3,4,4,8,4,8,8,8,4,8,4,3,8,8,3,
3,3,3,4,4,8,4,8,8,8,4,8,4,3,8,8,2,
8,8,8,4,4,8,8,4,8,8,3,8,8,8,4,4,4,8,2,
8,8,8,4,4,8,8,4,8,8,3,3,3,1,
8,4,4,8,4,8,4,8,2,8,4,4,8,4,1,
8,4,4,8,4,8,4,8,2
};
void setup() {
}
void loop() {
for (int thisNote = 0; thisNote < 98; thisNote++) {
int noteDuration = 800/noteDurations[thisNote];
tone(8, melody[thisNote],noteDuration);
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
noTone(8);
}
}
Troubleshooting and Tips
No Sound Output
- Check the wiring: Ensure all connections (VCC, GND, SIGNAL) are correctly made.
- Check the power supply: The module requires a 5V power source. Ensure that your power supply is adequate.
Low Sound Output
- Adjust the potentiometer to increase the volume.
- Ensure the module is properly powered and connected.