All About Loomia’s Force Sensitive Resistor (FSR) for Flexible Pressure Sensing
Loomia’s Force Sensitive Resistors (FSR) are thin, flexible force sensors designed for pressure sensing on curved and soft surfaces.
As force is applied to the sensors, their resistance decreases, which produces a continuous analog signal that maps applied force in real time.
Loomia’s sensing solutions include Single FSR, Mini Pressure Matrix, and Mega Pressure Matrix options.
Single Flexible FSR: point-based force sensing with analog output, ideal for compact pressure detection.
The Mini Matrix FSR: small area pressure mapping with multiple sensing points.
The Mega Matrix FSR: large-area pressure-distribution sensing for surfaces such as seats or panels.
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The Single FSR is a compact force sensitive resistor measuring approximately 22.2 mm × 28.6 mm.
The Single FSR gives you an analog read that maps the force on the sensor. The more you press, the lower the resistance goes. This sensor is small but mighty, making it convenient for small surface area applications.
Can integrate with a PSA for quick and easy integration
Easily customizable for different applications.
Unique non-printed sensor has a large dynamic range and good sensitivity
Loomia FSR matrices and single sensors can be used on flat or curved surfaces. These sensors can pack multiple points into a small area and can be customized to detect a range of forces by using masks.
Loomia has sample scripts available to help you evaluate sensors. Scroll down for pinouts and Arduino samples.
Resources:
The Mega Matrix Force Sensitive Resistor (FSR) has 9 sensor cells in a 3×3 array. Each sensor cell is 22.8mm, and the overall component size is approximately 88mm x 95mm.
The Mega Matrix FSR gives you an analog read that maps the force on the sensor. The more you press, the lower the resistance goes. This component:
Can integrate with a PSA for quick and easy integration
Easily customizable for a range of forces and pixel points.
Unique non-printed sensor has a large dynamic range and good sensitivity
Loomia FSR matrices and single sensors are best for flat or slightly curved surfaces, but will work up to a bend radius of 8mm. These sensors can pack multiple points into a small area and can be customized to detect a range of forces by using masks.
Loomia has sample scripts available to help you evaluate sensors. All scripts can be found later on this page.
Resources:
The Mini Matrix Force Sensitive Resistor (FSR) has 9 sensor cells in a 3×3 array. Each sensor cell is 8.9mm, and the overall component size is approximately 46mm x 53mm.
The Mini Matrix FSR gives you an analog read that maps the force on the sensor. The more you press, the lower the resistance goes. This component:
Can integrate with a PSA for quick and easy integration
Easily customizable for a range of forces and pixel points.
Unique non-printed sensor has a large dynamic range and good sensitivity
Loomia FSR matrices and single sensors are best for flat or slightly curved surfaces, but will work up to a bend radius of 8mm. These sensors can pack multiple points into a small area and can be customized to detect a range of forces by using masks.
Loomia has sample scripts available to help you evaluate sensors. All scripts can be found later on this page.
Resources:
Loomia Force Sensitive Resistors Provide:
Robust construction suitable for curved and soft surfaces
Analog force output for proportional pressure sensing
Peel-and-stick integration for fast prototyping and production use
Easy electrical integration with pressure sensing assemblies (PSAs
Customization options for size, shape, electrode layout, and substrate
Loomia sensors support innovation in robotics applications such as grippers and end-effectors, as well as in automotive interior surfaces. To learn more, contact an engineer.
Custom FSRs
We understand that for certain applications, an off-the-shelf component is simply not compatible. Our patented Loomia Electronic Layers (LEL) can also be customized to suit a variety of needs. Fill out the form to connect with our team and discuss your needs.
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Evaluation
1) Assess our force-sensitive resistor technology with a sample.
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Loomia Lab
2) We’ll create your custom LEL design with you through our lab.
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Production
3) Produce your LEL at upto 20,000 units a week
Loomia FSRs’ Test Results from an Independent University Lab
Loomia Force Sensitive Resistors have been laboratory tested across Single FSR, Mini Matrix FSR, and Mega Matrix FSR configurations to evaluate performance under real-world conditions. Testing focused on force range, repeatability, drift, durability, and mechanical robustness. Explore the full guide to testing Loomia force sensors on our website.
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Loomia FSRs detect low applied forces while supporting higher force ranges suitable for practical use. Although sensors can physically withstand forces above 100N, testing shows optimal performance and recovery within a controlled operating range of approximately .5-50 N.
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Hysteresis testing at low and high operating forces shows stable and repeatable sensor response across multiple loading cycles. At higher force levels, hysteresis is reduced, supporting consistent force measurement during repeated interactions.
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Drift testing over extended periods indicates low and predictable drift at typical operating forces, with higher variability at very low loads. This is consistent with expected FSR behavior.
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Mini and Mega Pressure Matrix sensors were cycled up to 10,000 times at low and high force levels. Results demonstrate sustained performance under repeated loading, supporting applications involving continuous touch or contact.
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Bend radius testing confirms that Loomia FSRs remain functional when integrated onto curved surfaces, enabling use in soft goods, robotics interfaces, and automotive interior applications.
| Category | Test Name | Description |
|---|---|---|
| Min/Max Force | Min Force Detectable | < 0.5N |
| Max Force Detectable | 50N | |
| Breaking Force | Sensor Breaking Point | 100N |
| Hysteresis | 1N Hysteresis | Avg 5% per cycle (10 cycles at 1 N) |
| 80% Max Force Hysteresis | Avg 1% per cycle (10 cycles at 50 N) | |
| Drift | 1N Drift | 0.9% over 1 hour at 1 N |
| 80% Max Force Drift | 113.3% over 1 hour at 50 N | |
| Durability | 1N Durability | 1,000,000 cycles |
| 80% Max Force Durability | 10,000 cycles at 50N | |
| Bend Radius | Max Bend Radius Allowed | 8mm |
Force Sensitive Resistors (FSR) — FAQ
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A force-sensitive resistor (FSR) is a thin, flexible sensor that changes resistance when pressure is applied. As force increases, resistance decreases, producing a continuous analog signal that reflects applied pressure.
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Loomia FSRs are designed for pressure sensing on flexible, curved, or soft surfaces. Common applications include robotics, automotive interiors, interactive surfaces, and general force-sensing applications.
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Loomia offers single-point FSR sensors as well as matrix FSR designs, including Mini Matrix and Mega Matrix sensors, which enable pressure mapping across multiple sensing zones.
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Yes. Loomia offers custom force-sensitive resistor designs through its Loomia Electronic Layer (LEL) platform, allowing adjustments to size, shape, electrodes, substrates, and sensing configurations.
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Key benefits include flexibility, thin construction, analog force output, peel-and-stick integration options, and scalable manufacturing for production applications.
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Loomia FSRs have undergone independent lab testing for durability, drift, repeatability, hysteresis, and mechanical flexibility. They typically operate optimally within a force range of approximately 0.5–50 N while tolerating higher forces.