Lots of explanation such as simple code, pulldown resistor, sensor, range, resistance, voltage, sensitive resistor, and supply voltage are presented inside the user guide. In the user guide we can read info related to current, force, sensors, measurements, reading method, arduino, and resistor.
The user guide presents things such as voltage reading ranges, analog reading, the analog voltage, supply, reading ranges, analog voltage, and resistors. These are taken from this user guide:
FSRs are sensors that allow you to detect physical pressure, squeezing and weight. They are simple to use and low cost. This is a photo of an FSR, specifically the Interlink 402 model. The 1/2″ diameter round part is the sensitive bit. The FSR is made of 2 layers separated by a spacer. The more one presses, the more of those Active Element dots touch the semiconductor and that makes the resistance go down.
Additionally, this user guide presents information about pressure, force sensitive resistor, simple demonstration, force measurements, the analog reading, fsr, and ranges.