As you can see from the photo the pressure sensor (Force sensitive resistor) when pressed goes to 1023 but when not it doesn’t drop below 740. Any idea why its not going down to 0 without pressure.
If you are using the prescribed 10K pull-down resistor you will not get a 0 reading unless the FSR resistance gets VERY high, into the millions of Ohms.
What are the upper and lower limits of FSR resistance? Perhaps a different pull-down resistor would get you a better range but I would not expect to reach both 0 and 1023.
you have to put resistor but I am not sure about it, you should change the various resistor before the FSR.