This basic piezo sensor from Measurement Specialties is a versatile tool for flex, touch, vibration, and shock measurements. When the film moves back and forth, it generates a small AC and large voltage (up to +/-90V). You can use a simple resistor to bring the voltage down to ADC levels. It's also great for impact sensing or as a flexible switch. It comes with solderable crimp pins and a mass at the tip, which boosts its sensitivity to motion. Features include a flexible PVDF piezo polymer film, a wide dynamic range, lamination for higher voltage output, and 0.1' breadboard - friendly leads. Documents available are the datasheet (LDT0 - 028K), hookup guide, and technical manual.
Using this piezo vibration sensor is easy. First, connect it using the solderable crimp pins to your circuit. If you're using it for measurement, make sure to use a simple resistor to lower the voltage to ADC levels. When measuring flex, touch, vibration, or shock, just place the sensor where you need the measurement. For impact sensing, position it where impacts are likely to occur. As a flexible switch, you can connect it to your device and use its motion - sensing ability. When handling the sensor, be gentle as the film is flexible and can be damaged easily. Store it in a dry and clean place to avoid any damage. Check the leads regularly to make sure they are not loose. Refer to the datasheet (LDT0 - 028K), hookup guide, and technical manual for more detailed information.
