×

Hello and Welcome! If you have a technical question please check out our Forums. If you have an order or shipping question please refer to our Customer Support page. Please see all COVID-19 updates here and thank you for your continued support.

×

Please take our customer survey for a chance to win $1000 in SparkFun credit! We really appreciate the time you take to give us your extremely valuable feedback on how SparkFun can be its best - we couldn't do it without your input. Thank you!

avatar

Julia Truchsess

Member Since: May 27, 2010

Country: United States

  • I backed this item in its crowdfunding campaign a couple of years ago and have used it almost daily since. It's extremely well-made, reliable, and useful.

  • It might be of interest to users that it is the conductance of these sensors that is linearly proportional to pressure, not their resistance. When you use them in a simple voltage divider circuit the voltage output will be highly non-linear, i.e. a 1/x curve. For a linear voltage output proportional to pressure you need to drive it with a constant-current source. The simplest way is to connect the FSR between a fixed reference voltage and the input of an op-amp inverter (with no other resistance in series with the FSR). The feedback resistance and the value of the reference voltage will determine the output range. Of course, the output will be inverted and you need to set up the opamp's power supply properly.

  • I've put 18W rms into it for several minutes. Gets mighty hot but hasn't burnt out. I wouldn't advise running it continuously at this level, but it's quite robust.

  • M5 x 0.8.

  • This thing is very solidly built, no complaints about the price from me; well worth it imo. If anyone needs to know, the central post's thread is M5 with 0.80mm pitch.

No public wish lists :(