As you can see, now you should be able to measure an output voltage (VOUT) between 0V and 4.5V depending on the amount of force you apply to the FSR sensor. Frankly, selecting the right value resistor ...

Finally, syrofoam was used to bridge the narrow gap between them so that the pressure from the bin was unifromly applied on the FSR. Arduino Hookup. Only a voltage-divider is needed here to interface ...