Passive Piezo Buzzer
by Generic
SKU: PSA-CMP-BUZZER-PAS
No reviews yetTypical India street price
₹8–₹20
Speaker-like piezo: you generate the frequency.
Interface: PWM / tone()
Active buzzers want ON/OFF; passive buzzers need tone/PWM.
Signal → D8 (GPIO15)
Blockly: set_buzzer, tone
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Concept
No oscillator — Arduino tone() or PWM makes music.
A little theory
Resonant disc. tone(pin, Hz, ms). In the classroom, treat Passive Piezo Buzzer as a beginner part using PWM / tone(). Typical India street price is about ₹8–₹20. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
tone() / noTone(). Melodies via note arrays.
Classroom & project use
- Music
- Multi-tone alarms
- LEDs & Indicators classroom demo
Buying in India
Precautions
- Check 3.3 V MCU compatibility before connecting signal pins
- Share a common GND with the microcontroller
Specifications
| Type | Passive |
| Drive | PWM |
| Category | LEDs & Indicators |
| Difficulty | Beginner |
| Voltage | 5V PWM |
| Interface | PWM / tone() |
Pinout
See module silkscreen: typically VCC, GND, and signal pins. Confirm labels against the seller photo — clones vary.
