How Loomia Built a 131-Point Tactile Sensor for Festo’s Robotic Hand
Using Loomia's Electronic Layer technology, Festo gave its pneumatic robotic hand the ability to feel - precisely, reliably, and at scale.
By the numbers
The Problem: Robots That Can't Feel
Robotic hands have grown remarkably sophisticated in their ability to move. But movement without feedback is a fundamental limitation. A gripper that can't sense how hard it's pressing is as likely to crush a lightbulb as to hold it.
Festo, a global leader in industrial automation, understood this gap. Their pneumatic robotic hand was already capable of nuanced, human-like motion. What it lacked was a genuine sense of touch: a tactile sensing system built for the non-human geometry of the hand, capable of mapping pressure across the surface in real time. They came to Loomia.
"A robotic hand that can feel is no longer just a gripper - it becomes an intelligent end effector capable of handling the delicate and the unpredictable."
What They Brought:
Custom-designed PCB
3D model / finished hand design
UI/UX software for viewing data
What We Did:
Created an LEL pressure-sensing matrix that could be laminated into fabric
Designed and fabricated a glove meant for easy electronics incorporation
Why Off-the-Shelf Tactile Sensors Fall Short
Standard tactile sensors are typically rigid or only have single-axis flex. Festo's pneumatic hand posed a unique challenge: its fingers inflate when actuated, which creates a dynamic geometry that changes with every grip. Knuckle areas required additional fabric to accommodate inflation. Palm and finger proportions bear little resemblance to any human hand.
No existing solution fit. A new approach from materials selection to final fabrication was the only path forward.
The Loomia Approach: LEL Technology as a Tactile Sensing Solution
Loomia's Electronic Layer (LEL) is a soft, flexible circuit technology designed to integrate directly into fabric and textile structures. For Festo, it became the foundation of a 131-point force-sensitive resistor matrix spanning the palm, all fingertips, and the spaces between each knuckle.
This wasn't a matter of adapting an existing product. Building a high-resolution tactile sensing system with LEL technology required pioneering new methods across every stage of development.
01 — Engineering & Materials
Over 30 Force Sensitive Resistor (FSR) materials were evaluated for sensitivity, durability, and manufacturability. Eight full design iterations - five partial-hand and three full-hand prototypes - refined the sensor matrix until placement was precise across every zone.
02 — Custom Glove Design
A close-fitting glove pattern was developed from scratch in stretchy knit fabric, engineered around the pneumatic hand's unique proportions and inflation behavior, while aligning with Festo's branding requirements.
03 — PCB Integration
To bridge the soft LEL matrix with Festo's control electronics, Loomia developed 13 different PCB layout design options, giving Festo's team a range of tested configurations for seamless system integration.
04 — Testing & Validation
Using a modified version of Festo's own Arduino test scripts, the team validated each sensor zone under simulated pressure loads, confirming the accuracy and reliability of the full tactile sensing system before final fabrication.
The Result: A Robotic Hand That Can Feel
The finished prototype is an integrated glove embedding a 131-point tactile sensing matrix directly into its fabric structure. It fits Festo's pneumatic hand precisely, captures real-time pressure data across every critical contact surface, and enables genuinely intelligent gripping behavior.
Beyond the glove itself, the project produced a refined, proprietary methodology for applying Loomia Electronic Layer technology as a tactile sensor platform, proven through exhaustive iteration, repeatable, scalable, and ready for the next challenge in robotics, wearables, and industrial sensing.
The collaboration proved that soft, fabric-integrated force-sensitive resistor sensing isn't a future concept. It's available today — and Loomia is the partner to build it with.
What This Means for Robotics
As robotic end effectors take on more complex tasks in manufacturing, healthcare, logistics, and research, the demand for high-resolution tactile sensing will only grow. The ability to detect force, sense slip, and respond to contact in real time is the difference between a robot that moves and one that works intelligently.
Loomia's LEL technology is uniquely positioned to meet that demand: flexible enough to conform to any geometry, precise enough to map pressure at scale, and manufacturable in ways that rigid tactile sensor arrays simply cannot match.
Ready to bring tactile sensing to your product?
Whether you're developing a robotic end effector, a smart wearable, or an industrial sensing system — Loomia can help you build it. Contact us at loomia.com or buy a sample of one of our FSRs at www.loomia.com/samples