Force Sensing Resistors (FSR) are sensors that allow you to detect pressure from squeezing or putting weight. These are very simple to use and interface in a microcontroller which is only connected like a simple resistor (in a voltage divider format).
The way FSR works is that the Resistance value of the device decreases as you apply more bend/squeeze on the element and increases when there is less weight pressure. It’s a good project feature when you want to use force as an input and output an LED light or door lock to turn on or anything you want to for output.
Force Sensing Resistors (FSR) are a polymer thick film (PTF) device. Its force sensitivity is optimized for use in human touch control of electronic devices. FSRs are not a load cell or strain gauge, though they have similar properties. FSRs are not suitable for precision measurements.
Features / Specifications
- Length : approx. 60mm
- Width : approx. 19mm
- Sensing area : 12.7mm
- Force sensing range : 0g~10kg
- Model : Interlink model 402 FSR with 1/2 diameter sensing region
- Output signal : Passive variable resistance
- FSR402 film force sensor.
- FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance.
- Can sense applied force on sensing area in the range of 0g-10kg.
- Two pins extend from the bottom of the sensor to mount the FSR.
- Small in size and light in weight.
Tutorials / Manuals / Documents
- Force Sensing Resistor (FSR) with Arduino Tutorial Written by Benne de Bakker
- Force Sensitive Resistor (FSR) datasheet
- Force Sensitive Resistor (FSR) datasheet guide