Long Flex Sensor 11.4cm - 4.5" (Detect Bending Motion)

Product Description

The Flex Sensor 4.5″ - 11.4cm is a resistive bend sensor that changes resistance when flexed, making it an excellent choice for motion detection, robotics, wearable electronics, and human-computer interaction. The more the sensor is bent, the higher its resistance, which can be easily measured using Arduino, ESP32, STM32, and Raspberry Pi.

This affordable version is ideal for projects requiring gesture recognition, glove-based controllers, prosthetics, and robotics joints. With its thin and flexible design, it can be embedded into clothing, gloves, or mechanical systems for reliable motion feedback.

Features

• 4.5-inch - 11.4cm resistive flex/bend sensor
• Resistance increases as the sensor is flexed
• Thin, lightweight, and flexible design
• Easy to integrate with Arduino and microcontrollers
• Cost-effective Chinese variant for DIY projects
• Long lifespan with proper handling
• Compatible with Arduino, ESP32, STM32, Raspberry Pi

Applications

• Gesture recognition systems
• Wearable electronics and smart gloves
• Robotics motion control and feedback
• Prosthetics and rehabilitation devices
• Gaming and VR/AR controllers
• IoT-based human interaction systems

Technical Specifications

Specification Details Sensor Type Resistive Flex Sensor Length 4.5 inch (~11.4 cm) Sensing Range 0° – 90° bend (typical) Resistance Range ~10kΩ (flat) to 60kΩ+ (fully bent) Operating Voltage 3.3V – 5V DC Connector Type Solderable pads / jumper wires Thickness ~0.5 mm

Package Includes

• 1 × Flex Sensor 4.5″ - 11.4cm

Documentation

• Works with Arduino IDE using voltage divider circuit
• Compatible with ESP32, STM32, Raspberry Pi (via ADC input)
• Can be combined with Kalman filters for gesture recognition