Force Sensor

This force-sensing resistor (FSR) is great for measuring pressure/force in a variety of contexts. This includes building touch sensitive tiles for dance floors, electronic 'drum' surfaces, etc. It outputs a fully conditioned signal in the industry standard voltage range of 0.25-4.75 Volts, perfect for the Teabox.

As with all of our sensors, we have taken care to make certain that this sensor is of high quality. For the hacker or do-it-yourselfer we also offer a "project version" of this sensor (see the specification sheet for more details), which comes at a reduced price.

View the Technical Specifications in a separate window.

Order Sensors

T303CR
Force/Pressure Sensor: Round
[$55]

T303CS
Force/Pressure Sensor: Square
[$55]

T303CRP
Force/Pressure Sensor: Round (Project Version)
[$45]

T303CSP
Force/Pressure Sensor: Square (Project Version)
[$45]

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Technicnal Specifications for Electrotap T303C Pressure Sensor

Technical Specifications for Electrotap T303C Pressure Sensor

Physical Attributes

Dimensions of Board: 1in (25mm) x 5/8in (16mm) x 3/8in (10mm)
Dimensions with Round Sensor: 2 7/8in (73mm) x 5/8in (16mm) x 3/8in (10mm)
Dimensions with Square Sensor: 3 7/8in (98mm) x 5/8in (16mm) x 3/8in (10mm)
Actuator Dimensions Round: 0.5in (12.7mm) diameter Square: 1.5in (38.1mm) square
Encased in protective heatshrink (clear).
Adhesive Backing on sensor actuator
Solder Mask Color: Red
Temperature Range: -30C to 70C (-21F to 150F)

Ordering Information

Full Version, Square Pressure Pad (with cable) - T303CS
Full Version, Round Pressure Pad (with cable) - T303CR
Project Version, Square (no cable, no connector, heatshrink provided individually) - T303CSP
Project Version, Round (no cable, no connector, heatshrink provided individual) - T303CRP

Sensing Specifications

Force Sensing Resistor manufactured by Interlink Electronics
Response Range: < 1.5psi to > 150 psi (< 0.1kg/cm² to > 10kg/cm²)
Response Time: 1-2 ms.

Electrical Specifications

Voltage Source: 0-5 Volts
Minimum Current Source: 5mA
Voltage Returned by Sensor: Industry Standard 0.25 Volts to > 4.75 Volts, fully conditioned and buffered.
Connector Layout (Pin 1 is indicated by an arrow on the top of the connector)
- Pin 1: Ground (from interface )
- Pin 2: Sensor Output
- Pin 3: 5 Volts (from interface)

Cable Specifications

Electrotap P/N: CAB-MX2LF3-3
Standard 3 foot (approximately 1 meter) premium quality Canare L-4E5C star-quad cable with braided shielding.
Sensor-end connector is our standard, female locking Molex connector. Interface-end connector is top-of-the-line Neutrik XLR connector.
Molex connector layout:
- Pin 1: Ground
- Pin 2: Sensor Output
- Pin 3: 5 Volts
XLR connector layout:
- Pin 1: Ground
- Pin 2: 5 Volts
- Pin 3: Sensor Output

Application Examples

Detecting the force applied to an object (under which this sensor is mounted).
Building "Tap-Tiles" for dance or installation applications
Building virtual percussion instrument controllers.