20mm Piezo Disc Transducer Acoustic Microphone

20mm Piezo Disc Transducer: Versatile Acoustic Pickup for DIY & Music Projects

Elevate your sound projects with the 20mm Piezo Disc Transducer from Bigyan Project. This highly sensitive acoustic contact microphone pickup element is engineered for exceptional performance in a wide array of applications, from crafting custom instrument amplifiers to building responsive electronic drum triggers. Whether you're a seasoned musician, a DIY electronics enthusiast, or a hobbyist looking to add unique sound capabilities to your creations, this piezo disc offers unparalleled versatility. Its robust construction featuring a ceramic element and brass base ensures durability and consistent signal output, making it a reliable choice for creators. Explore the possibilities of capturing subtle vibrations and transforming them into clear audio signals, perfect for musical instruments, stomp boxes, and innovative sensor designs. Bigyan Project is dedicated to providing quality components that empower your creativity.

Product Specifications

Key Features

• High-quality brass and ceramic construction for enhanced durability and temperature resistance.
• Pre-wired leads simplify installation, reducing setup time for DIY projects.
• Excellent sensitivity for capturing detailed acoustic vibrations.
• Low power consumption makes it ideal for battery-powered devices.
• Versatile form factor suitable for numerous electronic and musical applications.
• Cost-effective solution for adding pickup capabilities to instruments and devices.
• Lightweight and compact design for easy integration into various enclosures.

Applications & Use Cases

• Acoustic instrument pickups (guitars, mandolins, violins, ukuleles, cigar box guitars - CBGs).
• Electronic drum triggers for acoustic drum conversion.
• Contact microphones for capturing percussive instruments (cajon, djembe, bongos).
• Stomp box and foot-stomper sound creation.
• DIY electronic projects requiring vibration or touch sensing.
• Building custom sound modules and effects pedals.
• Use as a simple sounder or buzzer component.
• Developing interactive art installations and responsive gadgets.
• Simple acoustic guitar or ukulele internal microphone setup.
• Microphone trigger element for electronic music production.

User Guide / How to Use

• Mounting: Securely attach the piezo disc to the desired surface of your instrument or device using a strong adhesive (like epoxy, double-sided tape, or the included foam stickers if available). For acoustic instruments, mounting inside the body (e.g., under the bridge or soundboard) often yields the best results.
• Wiring: The piezo disc comes with two leads. Typically, one lead is connected to the ground of your audio circuit, and the other is connected to the tip of your output jack or the input of an amplifier/preamp circuit. For optimal signal quality, consider using a preamp or buffer circuit, especially for passive setups.
• Testing: Gently tap or strum the instrument near the piezo disc to test the signal. Adjust the mounting position and adhesive to fine-tune the tone and sensitivity.
• Integration: Connect the output to an audio amplifier, mixing console, effects pedal, or microcontroller input (e.g., Arduino analog pin) for further processing or triggering.

Frequently Asked Questions (FAQs)

• Q: What is a piezo disc transducer used for?
  A: A piezo disc transducer is used to convert mechanical vibrations into electrical signals, acting as a pickup for acoustic instruments, a contact microphone, or a trigger for electronic devices.
• Q: How do I connect a piezo disc?
  A: Typically, one wire connects to ground and the other to the signal input of your audio device or amplifier. A preamp is often recommended for optimal performance.
• Q: Can I use this for a guitar pickup?
  A: Yes, it's excellent for acoustic guitar pickups, cigar box guitars, and can be adapted for electric guitar effects or modifications.
• Q: What is the resonant frequency?
  A: The resonant frequency typically falls between 3.0 kHz and 6.5 kHz, with a common range around 4.6 +/- 0.5 kHz, influencing the tone it captures.
• Q: Is this a microphone?
  A: It functions as a contact microphone, meaning it picks up sound through direct contact or vibration, rather than through the air like a traditional microphone.
• Q: How sensitive is this piezo element?
  A: It is designed for high sensitivity, capable of picking up even subtle vibrations, making it ideal for detailed sound capture.
• Q: What materials are used?
  A: It features a ceramic piezoelectric element with a brass outer plate.

Challenges and Considerations

• Piezo pickups can sometimes be microphonic, meaning they can pick up unwanted handling noise if not mounted carefully.
• The tonal output can vary significantly based on the mounting location and adhesive used on the instrument.
• Piezo elements typically have a high impedance output, which can lead to signal loss or unwanted high-frequency rolloff if not properly buffered or amplified with a high-impedance input.
• Understanding basic electronics for proper wiring and integration into audio circuits is beneficial.

Compatibility

• Compatible with most audio amplifiers, preamplifiers, and audio interfaces with a suitable input impedance (e.g., guitar amp input, line-in, or instrument input).
• Can be integrated with microcontrollers (like Arduino, Raspberry Pi) for sensor-based projects and DIY electronics.
• Works well with effects pedals and stomp box circuits designed for instrument-level signals.
• Suitable for use with any acoustic instrument where vibration pickup is desired.

Future Enhancement Options

• Pairing with an active preamp circuit for enhanced signal strength and tone control.
• Incorporating multiple piezo discs for stereo effects or directional sensing.
• Integrating with onboard active electronics for instruments like acoustic guitars.
• Using in conjunction with other sensors for complex interactive installations.
• Building custom enclosures for specialized microphone or trigger applications.

Benefits

• Adds authentic acoustic sound capture to instruments.
• Enables the creation of custom electronic musical instruments and effects.
• Provides a cost-effective solution for DIY audio projects.
• Offers a simple yet effective way to trigger electronic sounds from physical actions.
• Durable construction ensures reliability for long-term use.
• Easy to install for both beginners and experienced makers.
• Enhances the sonic capabilities of traditional and custom instruments.

Conclusion

The 20mm Piezo Disc Transducer from Bigyan Project is an indispensable component for anyone looking to explore the world of acoustic sound capture and electronic music creation. Its robust build, high sensitivity, and versatile application range make it an excellent choice for musicians, makers, and hobbyists. Whether you're enhancing your cigar box guitar, building a responsive drum trigger, or experimenting with innovative sensor projects, this piezo pickup delivers reliable performance and opens up a universe of sonic possibilities. Trust Bigyan Project for quality components that bring your creative visions to life.