SKU: SENS-0728
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Force Sensor Resistor 38.1mm Square Pressure Pad - Thin Film FSR

₹409.00 (Inclusive of all taxes)
Out of Stock

This 38.1mm square Force Sensing Resistor (FSR) provides a variable resistance output proportional to applied force from 100g to 10kg. Its ultra-thin 0.45mm profile and breadboard-friendly 0.1″ pitch pins make it ideal for integration with microcontrollers like Arduino and Raspberry Pi via a simple voltage divider circuit and ADC input.

Features

  • Square 38.1mm (1.5″ x 1.75″) active sensing area with peel-and-stick backing for easy mounting.
  • Wide force sensing range from 100 grams up to 10 kilograms for versatile pressure detection.
  • Ultra-thin 0.45mm profile enables integration into compact spaces and flexible assemblies.
  • High-durability construction rated for up to 10 million actuations for long-term reliability.
  • Simple two-pin interface (0.1″ pitch) for straightforward connection to ADC inputs on Arduino, Raspberry Pi, or other microcontrollers.

Out of stock

Description

This Force Sensing Resistor (FSR) operates on the principle of piezoresistivity, where the electrical resistance through a conductive polymer decreases as mechanical force is applied to its active area. The sensor provides an analog resistance output, typically requiring an external pull-down resistor to form a voltage divider, the output of which can be read by a microcontroller’s ADC to infer applied force.

Designed for robust performance, the sensor features a durable construction capable of withstanding repeated use. Its ultra-thin form factor and adhesive backing allow for seamless integration into user interfaces, wearable devices, and embedded systems where discrete force profiling is required, though it is not intended for precision weighing applications.

Key Features

  • 38.1mm square active sensing area optimized for distributed pressure measurement.
  • Wide dynamic range from a light touch (100g) to significant force (10kg).
  • Extremely low profile of only 0.45mm thickness for space-constrained designs.
  • Engineered for high-cycle reliability, supporting over 10 million actuations.
  • Includes peel-and-stick rubber backing for quick, tool-free installation.
  • Standard 0.1" pitch male header pins for direct breadboard or PCB connection.
  • High-value build offering a cost-effective solution for force sensing prototypes and products.
  • Simple analog interface compatible with all standard microcontroller ADC inputs.

Applications

  • Prototype and product integration for touch-sensitive control panels and user interfaces.
  • Pressure and force profiling in embedded electronics and wearable device development.
  • Occupancy or presence detection in automotive seating and smart furniture.
  • Force feedback and activation sensing in robotics and prosthetic limbs.
  • Educational kits for demonstrating analog sensor principles with Arduino and Raspberry Pi.

Technical Specifications

Force Sensing Range100 g to 10 kg
Sensing Area Dimensions38.1 mm x 44.45 mm (1.5" x 1.75")
Overall Dimensions (L x W)88.9 mm x 44.45 mm (3.5" x 1.75")
Thickness0.45 mm
Electrical Interface2-pin, 0.1" pitch
Output TypeAnalog Resistance (requires voltage divider)
Resistance (No Load)> 1 MΩ
DurabilityUp to 10 million actuations
MountingPeel-and-stick adhesive backing
Approximate Weight5 g

Frequently Asked Questions

How do I connect this FSR to an Arduino or microcontroller?

Connect one FSR pin to your microcontroller's power supply (3.3V or 5V) and the other pin to an analog input pin (e.g., A0). Place a fixed resistor (typically 10kΩ) between the analog input pin and ground to form a voltage divider. The voltage at the analog pin will vary with the applied force, which your code can read via the ADC.

What is the accuracy of this force sensor resistor?

This FSR is designed for relative force measurement and pressure profiling, not precision weighing. Its response is non-linear, especially at the extremes of its range. It is excellent for detecting the presence of force, pressure thresholds, or changes in applied load, but should not be used as a calibrated scale for exact weight measurement.

Can this sensor be used for continuous, long-term force monitoring?

Yes, its robust construction is rated for up to 10 million actuations, making it suitable for long-term use in applications like occupancy sensing or control interfaces. For static force measurement over very long periods, ensure the electrical interface is stable and consider the sensor's inherent creep characteristics common to polymer-based FSRs.

What is the purpose of the peel-and-stick backing?

The adhesive backing allows for quick, secure, and tool-free mounting of the sensor onto flat surfaces. It ensures the sensing area remains in firm contact with the surface applying force, which is critical for consistent readings. For permanent installations, the backing can be used directly; for prototypes, it allows for easy repositioning.

Package Includes

  • 1 x Force Sensor Resistor (Square 38.1mm)

Additional Information

Weight 0.005 kg
Dimensions 8.89 × 4.445 × 0.045 cm