Piezo Element, Vibration Sensor (7BB-20-6L0)

Piezo Element, Vibration Sensor (7BB-20-6L0)

Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer.
A piezo is an electronic device that generates a voltage when it's physically deformed by vibration, a sound wave, or mechanical strain. Similarly, when you put a voltage across a piezo, it vibrates and creates a tone. Piezos can be used both to play tones and to detect tones.

Specifications:

• Resonant Frequency: 6.3 ±0.6kHz
• Resonant Impedance: 1K Ohm Max.
• Capacitance (nF): 10.0 ±30% [1kHz]
• Plate Material: Brass
• Wire gauge: 32 AWG

Dimensions:

• Plate Size dia.: 20mm
• Element Size dia.: 14mm
• Electrode Size dia.: 12.8mm
• Thickness: 0.42mm
• Plate Thickness: 0.2mm
• Wire Length: 50mm

Connecting to Arduino:

Documents:

• Knock (Example Arduino Sketch)