Author Topic: Springloaded linear potentiometer  (Read 1584 times)

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Offline Sudo_apt-get_install_yumTopic starter

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Springloaded linear potentiometer
« on: June 11, 2019, 10:53:24 am »
Im working on a project where i need to measure a small amount of linear movement (a few millimeters).
I had a few laying around but cant find a supplier for them does anybody know of any company who produces or supplies these types of potentiometers?

I would like to hear if anybody has a better solution for measuring very small movements in one axis

The below image is of the linear potentiometer.
 

Offline AndyC_772

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Re: Springloaded linear potentiometer
« Reply #1 on: June 11, 2019, 12:11:06 pm »
What level of accuracy do you need? How fast is your target moving?

Offline Sudo_apt-get_install_yumTopic starter

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Re: Springloaded linear potentiometer
« Reply #2 on: June 11, 2019, 12:16:40 pm »
The speed is variable but it’s never more than a few millimeters per second. The accuracy should be somewhere between 1/10mm - 1/100mm.
 

Online mariush

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Re: Springloaded linear potentiometer
« Reply #3 on: June 11, 2019, 12:27:36 pm »
Maybe the same idea behind precision rulers/calipers...
Maybe you can repurpose a mouse sensor
Maybe you can do some infrared led and detector annd measure change in light as object moves
permanent magnets on partt, hall effect sensors on botom?
 


Offline Sudo_apt-get_install_yumTopic starter

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Re: Springloaded linear potentiometer
« Reply #5 on: June 13, 2019, 07:08:52 am »
Thanks for the advice, I'll look into the caliper solution!
 

Offline joeqsmith

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Re: Springloaded linear potentiometer
« Reply #6 on: June 14, 2019, 03:03:12 am »
I would like to hear if anybody has a better solution for measuring very small movements in one axis

Maybe you could use an LVDT. 

Offline TERRA Operative

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Re: Springloaded linear potentiometer
« Reply #7 on: June 14, 2019, 04:16:04 am »
What about a slider pot like used in audio mixing desks?
Where does all this test equipment keep coming from?!?

https://www.youtube.com/NearFarMedia/
 


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