DFRobot Gravity Piezo Film Vibration Sensor

The DFRobot Gravity Piezo Film Vibration Sensor is a simple yet highly effective sensor that uses piezo film to detect vibration, impact, and touch. At the heart of the sensor is a 28µm thick piezoelectric PVDF polymer with screen-printed Ag-ink electrodes, which is laminated and fitted with two crimped contacts.

As the piezo film is displaced from the mechanical neutral axis, bending creates very high strain within the piezo polymer, generating high voltages of approximately ±90V. When the assembly is deflected by direct contact, the device acts as a flexible switch, and the generated output is sufficient to trigger MOSFET or CMOS stages directly.

This versatile sensor provides both digital and analogue output signals, offering a wide dynamic range from 0.001Hz to 1000MHz. Operating at 5V, it features a convenient plug-and-play 3-pin Gravity interface for effortless integration into your projects.

Contents

• Sensor board
• Piezo film
• Gravity cable

With its compact dimensions of 43 mm x 33 mm x 15 mm and a lightweight design of just 14 grams, this sensor is ideal for space-constrained applications.