So for the project I am working on I plan on measuring very precise changes in angle, possibly up to 5 degrees of accuracy.

  • Are polymer ink sensors (the classic Nintendo power glove flex sensor) the way to go?
  • Can they really be that accurate or are there any other alternatives to measure bend on an attached apparatus pricisely?
  • \$\begingroup\$ The best way to know is to read the specs of the specific sensor. \$\endgroup\$
    – Eugene Sh.
    Feb 4, 2019 at 20:58
  • \$\begingroup\$ they are "accurate", but to what standard? Sounds like it's more a problem of precision. Can you use a magnet and hall-effect sensor instead? those don't wear-out... \$\endgroup\$
    – dandavis
    Feb 4, 2019 at 21:34
  • \$\begingroup\$ what are you measuring the angle of? \$\endgroup\$
    – jsotola
    Feb 5, 2019 at 2:33

2 Answers 2


I think if the geometry is such that you can make the sensor flex exactly the same way for each motion, you can get 5 degree performance. If the goemetry moves around, you might not. You're likely somewhere in between these two cases. Sounds like a quick test is in order to determine if the method is worth putting more effort into.


They can be as accurate as measuring 5 degrees (depending on the configuration) but as long as you are willing to calibrate it, that is often the difficult bit. Make sure you set it up in such a way that you can replicate it and do your own tests. You may even be able to get it better than the requirements.


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