This very long force sensitive resistor - over 2 feet - has a sensing area of 0.25x24". This FSR from Interlink Electronics 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 bread board friendly. There is a peel-and-stick rubber backing on the other side of the sensing area to mount the FSR.
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.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Noob - You don't need to reference a datasheet, but you will need to know basic power requirements.
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Based on 3 ratings:
I had never used one of these before. Decided I'd give it a try and see if I could add aftertouch to one of my synthesizers. Once I found that putting some foam (weather stripping) on top made it significantly easier to control, I was elated. Just add a 10K resistor to one side and it works exactly like an expression pedal pot!
I wasn't really sure how well this was going to work for my project, but it ended up being exactly what I needed. I am mounting it so you can pinch it and turn on some LED lights and it has worked perfectly for that. It is plenty sensitive across the whole length of the resistor that you can easily pinch it at any point and it will work.
I used my first long FSR in a science project I was trying to complete before a regional science fair in my state. I tried to solder the FSR into my project and totally melted the connections on the end of the strip with my trusty soldering iron. Sparkfun got it to me in a couple of days allowing me to complete my project on time. Thank you Sparkfun!