Flex Sensor 4.5 Inch Bend Sensor for Arduino, ESP32 & Robotics

The 4.5 inch Flex Sensor is a flexible, lightweight sensor designed to measure bending and flex angle. As the sensor bends, its resistance changes, allowing accurate detection of motion and position.

This sensor is widely used in robotics, gloves, motion tracking, biomedical projects, gaming controllers, and wearable electronics. It interfaces easily with Arduino, ESP32, ESP8266, STM32, and other microcontrollers using a simple voltage divider circuit.

Its slim profile and reliable performance make it ideal for both educational and professional embedded projects.

Key Features

• 4.5 inch flexible bend sensor

• Resistance changes with bending angle

• Lightweight and thin design

• Easy analog interfacing

• Compatible with Arduino, ESP32, ESP8266, STM32

• Durable and repeatable performance

• Ideal for motion sensing and gesture control

• Low power consumption

Technical Specifications

• Sensor Type: Flex / Bend Sensor

• Length: 4.5 inch

• Flat Resistance: Approx. 10 kΩ

• Bent Resistance: Up to 30–40 kΩ (typical)

• Output Type: Analog (Resistance based)

• Operating Voltage: 3.3V – 5V

• Interface: Analog (via voltage divider)

• Operating Temperature: -10°C to +60°C

• Weight: Ultra lightweight

Applications

• Arduino flex sensor projects

• Robotics joint angle detection

• Gesture controlled systems

• Wearable electronics and smart gloves

• Biomedical and rehabilitation devices

• Motion tracking systems

• Educational STEM projects