Introduction: DIY FSR Sandwich

How to build your own tasty force sensor sandwich in three easy steps. These 1"x1" FSRs are part of the bed_data project at ITP.

If your project needs to use many FSRs, making your own surely reduces the cost of your project.

What you'll need:

Materials
Copper PCB ($7ish from radioshack)
Conductive foam ($7+shipping from altex. $13 total)
Wires
Gaffers tape

Tools
Scissors/Shears/Wire cutters
Soldering kit



Step 1: Cutting

We made 1"x1" squares from the conductive foam and copper board.

A manual shear was used to cut the copper squares and regular pair of scissors for the foam.

Step 2: Soldering

When you are soldering the wire to the copper board make sure you have enough wire to cover at least half of the square. Make sure your wire is long enough.

You need to do this for each piece.
The copper PCB is perfect for an sturdy solder.



Step 3: Sandwich

We used gaffers tape to secure the board and foam sandwich.

Cut a 2.5" strip and wrap it around, then cut any excess.

And you are done!



Step 4: Done

Now you can make hundreds and you should be able to read analog sensor values with your favorite micro-controller.

Comments

author
hyunus (author)2011-03-18

uhm..,helo
there something i would to know,what kind of application can be apply for this DIY fsr,i hardly want to know please..

author
bungalobob (author)2011-03-15

Are you force-sensing a bed in this picture? Because I was thinking on useing these for the very same reason

author
zack247 (author)2010-04-25

so, these are technically variable resistors based on pressure or something else?

author
jam BD (author)2009-11-30

useful =D
many on them

About This Instructable

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Bio: We are two students at ITP.
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