Force Sensitive Resistor RP-C7.6ST-LF2 (2g-1.5kg) - 0.3mm Thin Film

Connect the FSR in a simple voltage divider circuit with a fixed resistor (e.g., 10kΩ) between the sensor and ground. The junction point connects to an analog input pin on your microcontroller. As force applied to the sensor changes its resistance, the voltage at the analog pin will vary proportionally, which your code can read and map to a force value.

The resistance decreases non-linearly as applied force increases. At the minimum detectable force (~2-30g), resistance is very high (near 500kΩ). At the maximum rated force (1.5kg), resistance drops to approximately 500Ω. The response curve is inverse and logarithmic, requiring calibration for precise force measurement.

It is suitable for both continuous pressure measurement and binary touch detection. For continuous measurement, map the analog reading to your calibrated force curve. For simple on/off detection, set a threshold resistance or voltage value in your code to determine when a significant force (e.g., above the 30g actuation force) has been applied.

The adhesive backing provides a secure, permanent mounting solution onto clean, flat, and dry surfaces. It ensures the sensing area remains firmly in place and maintains consistent mechanical coupling for accurate force transfer. For best results, apply to a rigid substrate and avoid mounting on flexible surfaces that could dampen or distort the applied force.