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DescriptionThis is a piezoresistive force sensor from Tekscan. The harder you press， the lower the sensor's resistance. Pressing hard， the resistance changes from infinite to ～300k. The sensor itself is thin and flexible， but the resistance does not change while being flexed. Resistance changes only when pressure is applied to the round area at the end of the sensor. Used as a presence sensor(someone standing)， weight sensor， pressure sensor(impact testing)， etc.The overall length is about 8.5". Sensor comes with 0.1" spaced， reinforced， breadboard friendly connector.This sensor comes in three flavors. This sensor ranges from 0 to 25lbs of pressure.

DescriptionThis Piezo Alarm is a great option for when you need an audible alarm(or are just looking for a way to prank your friends). This alarm has 16 different output options that can be changed with the DIP switches on the unit. Select Continuous， Chime， Intermittent， Warble， or Pulsating and amaze your friends.FeaturesOperating Voltage：5-16VdcOperating Frequency：3KHzWarble Frequency：2.8KHz to 3.2KHzDiameter：35.8mm， Height 35.7mm103 dB(A)at 16V at 61cm90 dB(A)at 5V at 61cm

DescriptionThis is a small 12mm round speaker that operates around the audible 2kHz range. You can use these speakers to create simple music or user interfaces.This is not a true piezoelectric speaker but behaves similarly. Instead of a piezoelectric crystal that vibrates with an electric current， this tiny speaker uses an electromagnet to drive a thin metal sheet. That means you need to use some form of alternating current to get sound. The good news is that this speaker is tuned to respond best with a square wave(e.g. from a microcontroller).

DescriptionThe SparkFun Qwiic MicroPressure Sensor is a miniature breakout equipped with Honeywell's 25psi piezoresistive silicon pressure sensor. This MicroPressure Sensor offers a calibrated and compensated pressure sensing range of 60mbar to 2.5bar， easy to read 24 bit digital I2C output， and can be calibrated and compensated over a specific temperature range for sensor offset， sensitivity， temperature effects， and non-linearity using an on-board Application Specific Integrated Circuit(ASIC). With its ultra-low power consumption and Qwiic ports， you've got yourself a power packed little sensor!Each Qwiic MicroPressure Sensor has a calibrated pressure sensing range from 1-25psi and a power consumption rate as low as 0.01mW typ. average power， 1Hz measurement frequency for ultimate portability. Used in multiple medical(blood pressure monitoring， negative pressure wound therapy)， industrial(air braking systems， gas and water meters)， and consumer uses(coffee machines， humidifiers， air beds， washing machines， dishwashers)， the SparkFun Qwiic MicroPressure Sensor is a great addition to the SparkFun Qwiic ecosystem!The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.Get Started with the SparkFun Qwiic MicroPressure Hookup GuideFeaturesPressure Type：AbsoluteOperating Pressure：25psi(172.37kPa)I2C Address：0x18Accuracy：±0.25%Voltage - Supply：1.8V-3.6VPort Size：Male - 0.1"(2.5mm)TubePort Style：BarblessMaximum Pressure：60psi(413.69kPa)Compatible with a variety of liquid media2x Qwiic Connectors