/challenges-projects/design-challenges/enchanted-objects/b/blog/posts/magichat---7---force-sensing-resistorReading patient&#39;s heart rate is the first step to get a more useful physical parameter: blood pressureThe idea I want to develop in this challenge is to tighten the finger until the sensor is no longer able to read heart beat. At that point, the ...en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/enchanted-objects/b/blog/posts/magichat---7---force-sensing-resistorFri, 10 Apr 2015 10:05:16 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:76354f8e-83c4-4d4b-8375-2879bbc9f45eWorkshopshed1<p>I&#39;ve always known these as &quot;strain gauges&quot; but a &quot;force sensing resistor&quot; is a more descriptive name.</p><p>&nbsp;</p><p>You might want to check what the temperature co-efficient is for your sensor as you will likely need to compensate for that. You could use a bridge circuit with no load on the other sensor or just measure the temperature and compensate in software.</p><img src="https://community.element14.com/aggbug?PostID=20415&AppID=117&AppType=Weblog&ContentType=0" width="1" height="1">