Hi all!
Thanks for your input, @ Tom thanks for the link for the optical sensor :-)
@JBA can't use a photostress film since I want to have output of the sensor which I can directly feed into a controller unit and it should be cheap!
I think the LED and the PD is the easiest way, for the system...
Hi! Thanks for your feedback, that also sounds interesting. But I think it will not work for my application since i want to measure a more or less flat surface at once and I cannot use a Grating because it would be to expensive.
I think I have to give it a try, by just testing the idea from the...
Hi!
I found a nice thing via google for a measuring forces by using a light pipe. The light gets coupled into a light pipe and the amount of light is measured by a diode (http://www.dr-iguana.com/prj_LightPipe/). I think you can also use such a device for measuring the deflection of a membrane...