Affordable, Compact & Reliable Force Measurement for DIY, Robotics, and Industrial Use

A Force Sensor Resistor (FSR), also known as a Force Sensitive Resistor, is a thin and flexible sensor that changes its electrical resistance when a force or pressure is applied. Unlike strain-gauge load cells that measure high-capacity loads, FSRs are low-cost, lightweight, and ideal for touch and pressure detection applications.

At Sensors and Gauges, we offer a wide range of force sensors, resistive sensors, and industrial load cells for both DIY electronics and heavy-duty industrial systems.

👉 Request a Quote for Force Sensor Resistors

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What is a Force Sensor Resistor (FSR)?

A force sensor resistor is a polymer-thick film device that exhibits a decrease in resistance with an increase in applied force.

• No Force Applied → Very high resistance (megaohms)

• Light Force Applied → Resistance decreases noticeably

• Strong Force Applied → Resistance continues to drop proportionally

This behavior allows the FSR to be used in circuits for force, pressure, or tactile sensing.

👉 Related: Force Sensor Blog

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Key Applications of Force Sensor Resistors

⚙ Robotics – Detect grip pressure and collision feedback
🎮 Gaming Devices – Sim racing pedals, custom controllers
📱 Consumer Electronics – Touch-sensitive buttons, trackpads
🏥 Medical Devices – Prosthetics, patient monitoring mats
📦 Industrial Packaging – Detect press forces in sealing machines
🚗 Automotive – Seat occupancy sensors, dashboard controls

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Advantages of Force Sensor Resistors

✅ Ultra-Thin & Flexible – Easily embedded into surfaces
✅ Low Cost – Perfect for large-scale or experimental projects
✅ Simple Circuitry – Direct connection with Arduino/ESP32 using resistive divider
✅ Fast Response – Detects force and pressure changes instantly
✅ Scalable – Available in round, square, and strip forms

👉 External Resource: FSR Solutions – Load Cell Shop

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Force Sensor Resistor Working Principle

An FSR is typically made up of:

• Conductive Film Layer

• Spacer/Dome

• Printed Resistor Layer

When a force is applied, conductive particles make contact, lowering resistance. This resistance-to-force relationship is non-linear, but ideal for detecting relative force levels.

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Example: Using a Force Sensor Resistor with Arduino/ESP32

Hardware Setup:

• FSR sensor

• Fixed resistor (to form a voltage divider)

• Arduino/ESP32 + HX711 (optional for higher resolution)

Code Logic:

1. Connect FSR + resistor in voltage divider

2. Read analog value via Arduino’s ADC

3. Calibrate with known weights/forces

4. Convert values into force estimates

👉 Related: Load Cell Code for ESP32

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Force Sensor Resistor vs Load Cell

👉 Related: Weight Sensor Blog

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Why Choose Sensors and Gauges for Force Sensors?

✔️ Diverse Options – From thin-film FSRs to heavy-duty load cells
✔️ DIY & Industrial Friendly – Compatible with Arduino, Raspberry Pi, PLCs
✔️ Expert Advice – Calibration and application support
✔️ Reliable Supply – Quality sensors shipped across industries

📍 Location: Unit 27/191, McCredie Road, Smithfield, NSW 2164

📞 Customer Support:

• WhatsApp/Call: 0477 123 699

• Email: sales@sandsindustries.com.au

👉 Request a Quote for Force Sensor Resistors

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Smart Tip 💡

If your application requires precise, absolute force readings, choose a load cell. But if you need a lightweight, low-cost solution for touch or relative force sensing, a Force Sensor Resistor (FSR) is the smarter choice.

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Final Thoughts – Force Sensor Resistor

A Force Sensor Resistor is an affordable, compact, and easy-to-use solution for detecting pressure and force in DIY electronics, robotics, and interactive systems. While not as precise as industrial load cells, FSRs are perfect for prototyping and consumer applications where relative force detection is key.

👉 Partner with Sensors and Gauges to source the right force measurement technology for your project — whether it’s an FSR for a smart device or a load cell for industrial weighing.