Anyone used a String Potentimeter

[mauriceb]

I ordered mine from http://ca.mouser.com/Home.aspx (very good service). They have a good selection but I could not find any 100K linear slide potentiometers at that time, so I got 10K pots instead and they work fine. They probably have a much bigger selection of rotary pots though if you can use those.

Maurice

[mattford1]

Was yours a 100mm pot? I didn't see any there that are linear taper.

Matt

[mauriceb]

Was yours a 100mm pot? I didn't see any there that are linear taper.

Matt

Yes they were. Here is the part number I ordered from Mouser:
688-RSA0N11S9002 . If you are looking for more 'beefy' construction (& more expensive as well), here is a source that I found:

http://www.familygate24.com/alps/pot...ice/index.html

Maurice

[mattford1]

Maurice-
Looking at that mouser part number it looks as if you have an audio taper as opposed to linear.

Matt

[mauriceb]

Maurice-
Looking at that mouser part number it looks as if you have an audio taper as opposed to linear.

Matt

I thought exactly the same thing too and I fired an e-mail to them when I received the shipment notice but they assured me they were linear pots. When I received them, I checked them and they were indeed linear & not audio. I think the description or the type of taper is misleading or wrong but for sure the ones I received were linear.

Maurice

[mauriceb]

Maurice-
Looking at that mouser part number it looks as if you have an audio taper as opposed to linear.

Matt

One more thing; here is my e-mail to them and their answer:

There seems to be a discrepancy between what I ordered and what was shipped. The data sheet (Page 494) in your website for 688-RSA0N11S9002 (see insert below) shows that this item has a Linear taper (which is what I wanted) and the item you shipped shows a D Taper on the order form below. Can you please check into this and let me know what is it exactly that you shipped and if this wasn't what I wanted, how can I go about exchanging the items and getting the right ones I needed?

And their answer:

Page 494 of the catalog shows that part number as a linear taper. Thank You - Brian

To which I answered:
Yes, I mentioned Page 494 as well, but I was questioning the order details below which show a D Taper, whatever that is.

4 688-RSA0N11S9002 4 7.000 28.00
ALPS Slide Potentiom
10K OHM D TAPER Is this description wrong then?

And they answered:

There is more than one type of linear taper - I think you have what you need. Thanks _ Brian

So, not very re-assuring & very confusing but they were the right type after all

Maurice

[Prof Bill]

Here is my poor man version of a string potentiometer. Not really how a string potentiometer functions since real ones use transducers, but worked quite well in my setup.

Maurice

Hi Maurice,

This is a really neat solution that helps sort out a control mechanism that we have built on an experimental rig here!
Nothing to do with Flight Simulation

Many thanks indeed,

Bill.

[riche543]

Hey Guys what do ya reckon of hall effect sensors havnt tried myself but heres a Attached pdf we found interesting , I think they could be worth tryin out , Has anyone ever used this method Cheers Riche..