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Topic: Capacitive Sensor for detecting plastic objects (Read 4733 times) previous topic - next topic

yudopplyr

HI guys, I'd like to know if someone has already done a capacitive sensor for detecting plastic objects (range 1-4cm), my intention is to build a robotic arm that holds plastic objects if it detects one, I'd be very grateful if you could show me a diagram that you may have used on any projects you have developed.

Thanks in advanced.

PaulS

The art of getting good answers lies in asking good questions.

yudopplyr


PaulS

Quote
What do you mean by "vs what" exactly?

Wood, iron, copper, steel, eggs, tomatoes, zucchini, etc.

Are you trying to make a picker than can discriminate plastic from other materials? If so, from what other materials?
The art of getting good answers lies in asking good questions.

yudopplyr


jremington

There is certainly no problem discriminating aluminum from plastic -- an inductive proximity sensor will do that. Here are some commercial examples (but you can make your own): http://ab.rockwellautomation.com/Sensors-Switches/Inductive-Proximity-Sensors/Tubular-Inductive-Proximity-Sensors

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