Force Sensor 15mm diameter

The 15mm Force Sensitive Resistor (FSR) is a versatile, ultra-thin component that changes its resistance based on how much pressure is applied to its circular sensing area. Unlike a simple button that is either "on" or "off," the FSR allows you to measure how hard someone is pressing, making it perfect for human-machine interfaces where touch sensitivity is required.

15mm Force Sensitive Resistor (FSR)
The FSR is made of a conductive polymer that changes resistance when mechanically disturbed. Because it is paper-thin and flexible, it can be integrated into curved surfaces, placed under buttons, or even tucked inside a shoe or a robotic gripper.

Why it’s a Design Essential:
Compact & Low Profile: With a tiny 15mm sensing diameter and a thickness usually under 0.5mm, it fits into tight spaces where traditional load cells or scales would be too bulky.

Variable Pressure Detection: It provides a smooth transition of data. It can detect everything from a light touch (like a finger tap) to a heavy squeeze (like a robot arm gripping an object).

Analog Simplicity: By using a simple voltage divider circuit with a fixed resistor (usually 10kΩ), the changing resistance is converted into an analog voltage that any microcontroller can read.

Durability: These sensors are designed for millions of actuations, making them reliable for long-term use in consumer electronics or interactive art installations.

Technical Capabilities:
Non-Linear Response: The resistance drops significantly with the first few grams of force and then levels off as more weight is added. This makes it extremely sensitive to the "initial touch."

Fast Response Time: The sensor reacts almost instantly to pressure changes, which is critical for robotics and gaming applications.

Wide Compatibility: It works perfectly with 3.3V and 5V systems, including Arduino, ESP32, and Raspberry Pi (via an ADC).

Best For:
The 15mm FSR is the go-to for robotic grip detection, touch-sensitive buttons, wearable force monitors, and interactive musical instruments. It is the easiest way to give your project a sense of "touch."