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Topic Title: Analog proximity sensor suggestion
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Created On: 27 December 2013 04:02 PM
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 27 December 2013 04:02 PM
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rafaelaccn

Posts: 1
Joined: 27 December 2013

Can anyone suggest a low price (<30$) analog proximity sensor that is linear and with a low range ( something like 5-50cm ), preferably a single module one.

Thanks.
 04 January 2014 11:54 PM
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jarathoon

Posts: 1033
Joined: 05 September 2004

ultrasound module perhaps?

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James Arathoon
 06 January 2014 09:05 AM
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oneye

Posts: 158
Joined: 25 February 2008

A decent ultrasonic detector such as E&H or Siemens takes you well out the low price range.

I've not used potentiometer devices for 15yrs or so, where you would obtain them from or the costing.
They appear to be small drums where very thin metal cable is drawn out and measures distance, not disimilar to a tape measure, except the result goes to a geared - down potentiometer giving a 4-20ma signal.
I'll see if I can find details from archives I have.
 06 January 2014 12:24 PM
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oneye

Posts: 158
Joined: 25 February 2008

What I had inn mind are cable or rope positioning sensors...

http://www.asm-sensor.com/asm/...p?lang=en&det=pos_sei
http://www.megatron.de/en/category/linear-sensors.html

The rod positionig sensors tend to be more expensive but more precise.
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