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 Sparkfun products range from things like resistors and LEDs to humidity sensors and LCD screens.  Including: Books, Cables, Cellular, Components, Development Tools, E-Textiles, GPS, Kits, LCDs, Programmers, Prototyping, Sensor, Tools, Robotics, Wireless

    Product Description Price Add to Cart
    Flex Sensor 2.2" Flex Sensor 2.2" A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance across the sensor increases. Patented technology by Spectra Symbol - they claim these sensors were used in the original Nintendo Power Glove. I love the Nintendo Power Glove. It's so bad! The resistance of the flex sensor changes when the metal pads are on the outside ... $9.00

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    Force Sensitive Resistor 0.5" Force Sensitive Resistor 0.5" This is a force sensitive resistor with a round, 0.5" diameter, sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. This FSR can sen... $6.95
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    Force Sensitive Resistor - Square Force Sensitive Resistor - Square This is a force sensitive resistor with a square, 1.75x1.5", sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. This FSR can sense applied force any... $9.75
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    Force Sensitive Resistor - Small Force Sensitive Resistor - Small This is a small force sensitive resistor. It has a 0.16" (4 mm) diameter active sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR, its resistance will be larger than 1MΩ,... $5.95
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    Piezo Vibration Sensor - Large Piezo Vibration Sensor - Large This basic piezo sensor is often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to +/-90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch. Comes with solderable ... $2.95

    Ships in 3 to 7 days
    Flex Sensor 4.5" Flex Sensor 4.5" A simple flex sensor 4.5" in length. As the sensor is flexed, the resistance across the sensor increases. Patented technology by Spectra Symbol - they claim these sensors were used in the original Nintendo Power Glove. I love the Nintendo Power Glove. It's so bad! The resistance of the flex sensor changes when the metal pads are on the outside ... $16.50

    Ships in 3 to 7 days
    Load Sensor - 50kg Load Sensor - 50kg This load sensor is the same one found in digital bathroom scales (you know, the ones you use in January for your New Year's resolutions, and then forget about a month later). This sensor can measure up to about 110 pounds. Check the video below for a tutorial about load sensors.Documents:SpecificationsLoad Sensor Tutorial $10.50

    Ships in 3 to 7 days
    Piezo Vibration Sensor - Large with Mass Piezo Vibration Sensor - Large with Mass This basic piezo sensor is often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to +/-90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch.Comes with solderable crimp pins and a mass attac... $3.37

    Ships in 24 hours
    Piezo Vibration Sensor - Small Vertical Piezo Vibration Sensor - Small Vertical  The Minisense 100 is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies. Useful for detecting vibration and 'tap' inputs from a user. A small AC and large voltage (up to +/-90V) is created when the film moves back an forth. A simple resistor should get the voltage down to ADC levels. Can al... $3.37

    Ships in 24 hours
    Piezo Vibration Sensor - Small Horizontal Piezo Vibration Sensor - Small Horizontal The Minisense 100 is a low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies. Useful for detecting vibration and 'tap' inputs from a user. A small AC and large voltage (up to +/-90V) is created when the film moves back an forth. A simple resistor should get the voltage down to ADC levels. Can als... $3.37

    Ships in 3 to 7 days
    Force Sensitive Resistor - Long Force Sensitive Resistor - Long This is a very long force sensitive resistor - over 2 feet - has a sensing area of 0.25x24". This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. T... $17.95

    Ships in 3 to 7 days
    Flexiforce Pressure Sensor - 100lbs. Flexiforce Pressure Sensor - 100lbs. This is a piezoresistive force sensor. 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. U... $25.50

    Ships in 24 hours
    SoftPot Membrane Potentiometer - 100mm SoftPot Membrane Potentiometer - 100mm These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip. Can be used as an accurate positional indicator for CNC head positioning, variable user input (volume level inpu... $18.75

    Ships in 3 to 7 days
    SoftPot Membrane Potentiometer - 50mm SoftPot Membrane Potentiometer - 50mm These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip. Can be used as an accurate positional indicator for CNC head positioning, variable user input (volume level inpu... $16.15

    Ships in 24 hours
    Flexiforce Pressure Sensor - 25lbs. Flexiforce Pressure Sensor - 25lbs. This is a piezoresistive force sensor. 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. U... $26.25

    Ships in 3 to 7 days
    Flexiforce Pressure Sensor - 25lbs (1" area) Flexiforce Pressure Sensor - 25lbs (1" area)  Flexiforce Pressure Sensor - 25lbs (1" area)sku: SEN-11207  This is a piezoresistive force sensor. The harder you press, the lower the sensor's resistance. Pressing hard, the resistance changes from infinite to ~50k. The sensor itself is thin and flexible, but the resistance does not change while being flexed. Resistance changes only when press... $30.00

    Ships in 24 hours
    Flexiforce Pressure Sensor - 1lb. Flexiforce Pressure Sensor - 1lb. This is a piezoresistive force sensor. The harder you press, the lower the sensor's resistance. Pressing lightly, 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... $25.50
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    SoftPot Membrane Potentiometer - 200mm SoftPot Membrane Potentiometer - 200mm These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip. Can be used as an accurate positional indicator for CNC head positioning, variable user input (volume level inpu... $22.50

    Ships in 24 hours
    Wiper/Actuator -  1N to 3N Force Wiper/Actuator - 1N to 3N Force This is a small wiper/actuator that is used to provide adequate and even pressure on the surfaces of the potentiometers. Unit provides 1-3N of force.Specifications:M614 ThreadsOne thread per 1mm14mm length $4.50
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    MagnetoPot: Liquid Level Contactless Sensor MagnetoPot: Liquid Level Contactless Sensor The MagnetoPot is a contactless linear potentiometer used for liquid level and other harsh applications. This innovative sensor allows designers to retroactively assemble the sensor on the outside of pneumatic and hydraulic cylinders, which connects with the internal magnet of the cylinder. This allows the cylinder to produce linear output... $30.29
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    SoftPot Membrane Potentiometer - 500mm SoftPot Membrane Potentiometer - 500mm These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip. Can be used as an accurate positional indicator for CNC head positioning, variable user input (volume level inpu... $33.00
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    Softpot Rotary Potentiometer Softpot Rotary Potentiometer These are very thin variable potentiometers. By pressing down on various parts of the rotary dial, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the rotary. Can be used as an accurate positional indicator for rotational items, variable user input (volume level i... $18.45

    Ships in 3 to 7 days
    HotPot Membrane Potentiometer - 100mm HotPot Membrane Potentiometer - 100mm When you need to track movement in a volatile environment, HotPot provides a thin and sealed form-factor with operating temperature tolerances of -40 to +85C. The HotPot is the preferred product for industrial and outdoor applications. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allo... $23.25

    Ships in 3 to 7 days
    HotPot Rotary Potentiometer HotPot Rotary Potentiometer When you need to track movement in a volatile environment, HotPot provides a thin and sealed form-factor with operating temperature tolerances of -40 to +85C. The HotPot is the preferred product for industrial and outdoor applications. By pressing down on various parts of the rotary dial, the resistance linearly changes from 100Ohms to 10,000Ohm... $23.25

    Ships in 24 hours
    HotPot Membrane Potentiometer - 500mm HotPot Membrane Potentiometer - 500mm This product has been discontinued - It is only here as a reference.When you need totrack movement in a volatile environment, HotPot provides a thin andsealed form-factor with operating temperature tolerances of -40 to+85C. The HotPot is the preferred product for industrial and outdoorapplications. By pressing down on various parts of thest... $39.15
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    HotPot Membrane Potentiometer - 50mm HotPot Membrane Potentiometer - 50mm This product has been discontinued - It is only here as a referenceWhen you need totrack movement in a volatile environment, HotPot provides a thin andsealed form-factor with operating temperature tolerances of -40 to+85C. The HotPot is the preferred product for industrial and outdoorapplications. By pressing down on various parts of thestrip, t... $21.44
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