4mm Mini Circular Force Sensor

This small device is a force sensitive resistor with a precise 0.16-inch (4 mm) diameter active sensing area, making it ideal for applications where space is constrained. It effectively alters its resistance depending on the pressure applied to the sensing area, allowing you to measure varying levels of force with ease. The sensor is designed with a resistance that changes inversely with applied force, meaning the harder you press, the lower the resistance.

When no force is applied, expect a resistance value larger than 1MΩ. If full pressure is exerted, the resistance drops to an approximate value of 2.5kΩ. The responsive nature of this sensor makes it suitable for detecting presence or touch, but its simplicity is best leveraged in scenarios where precision is not critical.

Equipped with two pins extending from its base, spaced by a convenient 0.1-inch pitch, this force sensitive resistor is breadboard compatible, facilitating straightforward integration into various projects. Though it excels at sensing pressure and touch, its performance is not calibrated for detailed measurements like weighing scales. Instead, rely on it for practical, straightforward applications that require pressure distinction, such as detecting a soft press versus a firm squeeze.