by shessj on Sun Sep 22, 2013 10:11 pm


This is my first project with Arduino and I would like some advice, please! Here is my plan:

I want to use five Force Sensitive Resistors. I am going to attach the five FSR's to a metal board. When a magnet or magnets are placed on the different FSR's, it will send the info to the Arduino then on to a display where it will show the number of magnets (1-5) that are pressing down on the FSR's.

Is this doable?

If so, what supplies will I need besides the Arduino Uno and the five FSR's?

Thank you!!!
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by adafruit_support_mike on Sun Sep 22, 2013 10:41 pm

It's possible in theory, but depends on the weight of your magnets.

Our force sensitive resistors have a working range between 0.2N and 20N (in practical terms, they can weigh objects between 20 grams and 20 kilograms). We have a tutorial that explains how to use them here: ... r/overview

If your magnets are sufficently heavy, you should probably be able to see a change in the resistance of the FSRs beneath them.
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by shessj on Mon Sep 23, 2013 8:08 am

Thank you!
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