Flex Sensor 2.2 inch

🧩 Overview
Flexible bend/angle detection sensor
Works as a variable resistor
Resistance changes when the sensor is bent
Widely used in robotics, wearables, and motion tracking
⚙️ Working Principle
Sensor contains conductive ink layer on flexible substrate
When bent → conductive path stretches
Resistance increases with bending angle
Microcontroller reads change using voltage divider circuit
👉 Flat = low resistance, Bent = high resistance
📊 Key Specifications
🔹 Length: 2.2 inch (~56 mm)
🔹 Type: Resistive bend sensor
🔹 Flat Resistance: ~10kΩ
🔹 Bent Resistance: ~20kΩ – 40kΩ
🔹 Operating Voltage: 3.3V – 5V
🔹 Bend Range: Up to ~90° (typical)
🔹 Output: Analog (via voltage divider)
🔌 Pin Configuration
🟡 Pin 1 → VCC / Signal
⚫ Pin 2 → GND
👉 No polarity restriction (acts like resistor)
🔄 Features
High sensitivity to bending & flexing
Lightweight and flexible
Easy to interface with microcontrollers
Smooth analog output proportional to bend
Long life cycle (>1 million bends typical)
🛠️ Applications
Gesture control gloves 🖐️
Robotic fingers 🤖
VR / gaming controllers 🎮
Prosthetics & biomedical devices 🦾
Posture monitoring systems
Motion tracking & wearable tech
⚠️ Usage Tips
Use voltage divider circuit for accurate readings
Avoid bending near connector/base (fragile area)
Calibrate flat and bent values in code
Do not over-bend → may damage sensor
Mount securely for consistent readings
✅ Advantages
Simple working principle
Easy integration
Good sensitivity to small bends
Low power consumption
⚠️ Limitations
Not highly precise (needs calibration)
Non-linear response
Can wear out if overused
Sensitive to mechanical stress
🔍 Summary
A 2.2-inch flexible resistive sensor
Measures bending by change in resistance
Outputs analog signal via voltage divider
Ideal for gesture control, robotics, and wearable electronics