How to Make a Ridiculously Cheap Analog Pressure Sensor

Step 2 Step 2

Step 2:

Poke two wires into the foam.  Make sure the wires aren’t touching and there is a bit of a gap between the two so that when squished they won’t touch.  To make sure the wires don’t come out while in use, I poked the wire all the way through and bent them at the ends.