The BDD Flex Sensor 2.2 Inch (6cm) is an ultra-thin, flexible resistive sensor designed to measure bending, flexing, and angle displacement in a wide range of electronic and motion-sensing applications. Based on patented flexible printed circuit technology, this sensor changes its electrical resistance in response to physical bending, making it an ideal solution for detecting motion and curvature in compact and wearable systems.
When the sensor is bent, its resistance increases proportionally to the degree of flex. At a flat position, the sensor maintains a nominal resistance of approximately 10K ohms ( 30%), while at full 180 bending, the resistance can increase to at least twice its flat value. This predictable resistance change allows microcontrollers and analog circuits to accurately interpret motion, angle, or displacement data.
The sensor is constructed using a durable yet ultra-thin flexible substrate with conductive materials that ensure long-term reliability. It features a low-profile design with a thickness of only 0.43mm, allowing it to be easily integrated into tight or lightweight designs without affecting movement or ergonomics.
With a lifecycle exceeding 1 million bending cycles, the BDD Flex Sensor is built for durability in continuous-use applications. It is capable of operating within a temperature range of -35 C to +80 C, making it suitable for both indoor and industrial environments.
The sensor is equipped with standard 0.1-inch pitch connectors, making it breadboard-friendly and easy to interface with Arduino, Raspberry Pi, ESP32, STM32, and other microcontroller platforms. Proper mounting of the base is recommended to ensure accurate readings and to prevent mechanical stress at the connection points.
Originally developed using technology popularized in wearable motion systems, this flex sensor is widely used in robotics, gaming devices, medical monitoring equipment, musical instruments, and rehabilitation systems where precise bending detection is required.
Key Features
Part Number: BDD Flex Sensor 2.2 Inch
Flexible resistive bending sensor
Length: 2.2 inches (6 cm)
Measures angle displacement and flex motion
Flat resistance: ~10K ohms ( 30%)
Resistance increases with bending
Ultra-thin flexible construction
High durability with over 1 million cycles
Breadboard-friendly 0.1" connector spacing
Lightweight and low-profile design
Easy integration with microcontrollers
Wide operating temperature range
Reliable and repeatable response characteristics
Applications
Robotics motion sensing
Wearable electronics
Gaming controllers and virtual input devices
Medical rehabilitation systems
Prosthetics and assistive devices
Gesture recognition systems
Musical instruments with motion input
Physical therapy monitoring
Human-machine interface systems
Educational electronics projects
DIY motion detection systems
Technical Specifications
Model: BDD Flex Sensor 2.2 Inch
Device Type: Flexible Bending Sensor
Sensing Principle: Resistive Flex Detection
Length: 2.2 inches (6 cm)
Flat Resistance: 10K ohms 30%
Bend Resistance: 2× flat resistance at 180 bend
Power Rating: 0.5W continuous, 1W peak
Thickness: 0.43 mm
Operating Temperature: -35 C to +80 C
Lifecycle: >1,000,000 cycles
Connector Type: 0.1 inch pitch (breadboard compatible)
Benefits
Accurately measures bending and motion
Ultra-thin and flexible design for easy integration
Long operational lifespan
Simple resistive output for easy interfacing
Suitable for compact wearable systems
Highly versatile across multiple industries
Reliable and repeatable sensing performance
Summary
The BDD Flex Sensor 2.2 Inch is a durable and highly sensitive bending sensor designed to detect motion and angle changes through resistance variation. With its ultra-thin construction, long lifecycle, and easy microcontroller integration, it is ideal for robotics, wearable technology, medical devices, gaming systems, and any application requiring accurate flex or motion detection.
What's in the box
1 x BDD 2.2 Inch Flex Sensor Bending Sensor 10K Ohm Angle Displacement
