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Help! how to use sensor to detect gap 0.2mm?

Hello all,currently I have a problem with the gap of my project. My project compenent have gap btw the motor and chassis. It supose to be no gap (<

Re: Help! how to use sensor to detect gap 0.2mm?

laser sensor?

Re: Help! how to use sensor to detect gap 0.2mm?

I dont think you will get cheap sensors for such high precision.

Re: Help! how to use sensor to detect gap 0.2mm?

omron smart sensor? but it will cost a lot. i want a cheap and easy to develop sensor which can detect gap between 2 metal. thank you.

Re: Help! how to use sensor to detect gap 0.2mm?

@saloiYou could probably use an LDR attached to a 0.2mm shim or feeler gauge and arranged like this... If the gap is more than 0.2mm more light would

Re: Help! how to use sensor to detect gap 0.2mm?

go u only want to detect gap or measure it??

Re: Help! how to use sensor to detect gap 0.2mm?

hi saloi,you also can try using a Peizoelectric wafer between the motor and the chassis to know if there is any deviation. Peizo element inside any bu

Re: Help! how to use sensor to detect gap 0.2mm?

great arun clever solution