Force Sensor Resistor 0.5″ 14.7mm

A Force Sensitive Resistor (FSR) with a size of 0.5″ (14.7mm) is a type of sensor that varies its resistance based on the amount of pressure or force applied to its surface. Here’s a detailed overview:

Specifications:

1. Size: The active sensing area is 0.5 inches (14.7mm) in diameter.
2. Thickness: Typically around 0.45mm when not pressed.
3. Force Sensitivity Range: Can generally detect forces from about 0.1 Newtons (10 grams) to 10 Newtons (1 kilogram), depending on the specific model.
4. Resistance Range: The resistance decreases as the force increases. When no force is applied, the resistance can be very high (in the megaohms range), and it drops to a few hundred ohms under maximum pressure.

Features:

1. Pressure Sensitive: Changes resistance when a force is applied, allowing for pressure measurement.
2. Flexibility: Can be bent and integrated into various applications.
3. Thin Profile: Allows for unobtrusive integration into devices and surfaces.
4. Cost-Effective: Generally inexpensive compared to other types of force sensors.

Applications:

1. Robotics: To sense touch or pressure for interaction and control.
2. Consumer Electronics: In touchpads, musical instruments, and game controllers.
3. Wearable Devices: For monitoring grip strength, foot pressure, and other biometric data.
4. Industrial Controls: Used in machinery to detect presence and measure force applied.

How It Works:

• The FSR consists of a conductive polymer that changes resistance in a predictable manner when force is applied. The sensor is typically connected in a voltage divider configuration with a fixed resistor to measure the voltage change corresponding to the applied force.

Example Configuration:

• Wiring: Connect one end of the FSR to a voltage source (e.g., 5V) and the other end to both a fixed resistor (which then goes to ground) and to an analog input pin of a microcontroller.
• Reading: The microcontroller reads the voltage at the junction between the FSR and the fixed resistor, which varies with the applied force.

Choosing a Fixed Resistor:

• Select a resistor value that optimizes the range of forces you expect to measure. For typical human touch applications, a 10k ohm resistor is often used.

Note: The color of the product may vary. You may get any color while shipping.