This
is a force sensitive resistor with a round, 0.5" diameter, sensing
area. This 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. When no pressure is being applied to the FSR its
resistance will be larger than 1MΩ. This FSR can sense applied force
anywhere in the range of 100g-10kg. Two pins extend from the bottom of
the sensor with 0.1" pitch making it breadboard friendly. There is a
peel-and-stick rubber backing on the other side of the sensing area to
mount the FSR. Just Connect a resistor to form a voltage divider and
measure the voltage at the junction to find the force applied.These
sensors are simple to set up and great for sensing pressure, but they
aren't incredibly accurate. Use them to sense if it's being squeezed,
but you may not want to use it as a scale.
