The Measurement Specialties LDT0-028K Piezo Film Vibra Tab sensor (also known as PZ-01) consists of a flexible piezoelectric film laminated to a polymer substrate. When the sensor is bent or displaced from its neutral axis, the strain within the piezo film generates voltage, up to 70V. A microcontroller can detect this voltage, making the Vibra Tab useful as an inexpensive switch or vibration sensor. It is easy to use with the COUNT or PULSIN commands on a BASIC Stamp or the SensorEventv20 command on a Waspmote.
Note: If your microcontroller does not have internal clamping/protection diodes on the I/O pins, you will need to clamp, buffer or filter the sensor's output signal to keep it within acceptable limits. A 5.1V Zener diode is recommended.
Piezo Film Vibra Tab Features
- Thin polymer film laminate with two crimped contacts for mounting and electrical connections
- Sensitivity of 50 mV/g
- Generates voltage when vibrated, flicked, or bent — from 0V to 70V
- Attach a small mass to decrease sensitivity and resonant frequency
- Dimensions: 0.98 × 0.52 inches (25 × 13 mm)
- Operating temperature: 32 to 185 °F (0 to 85 °C)
If you need higher sensitivity than this version, you can get the LTDM-028K instead, which has a sensitivity of 200 mV/g.
Piezo Film Vibra Tab Resources
Compatible with Waspmote This sensor can be used in a Waspmote wireless sensor platform by plugging it into the Waspmote Events Sensor Board.