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Description: These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip. Can be used as an accurate positional indicator for CNC head positioning, variable user input (volume level input for example), straight user input (multiple button areas translate to given resistance levels), and many other applications.

Unit comes with adhesive backing. Connector is 0.1" spaced and bread board friendly.

Note: These potentiometers work great with a finger, or stylus. For premium repeatability, the wiper listed below is perfect for machine and object positioning.

Documents:

Comments 7 comments

  • Can anyone link me a good connector for this? I’ve been told soldering the connections will melt the nearby plastic.

    • Just spoke with SpectraSymbol, they said there is no specific mate for these, they come with solder tabs which are meant to be soldered. They do however make SoftPots with Nicomatic crimpflex housings also.

      • I have been using half of a 6-pin (or 8-pin) ic socket with success, it fits snugly. Be sure not to use the ones with round holes but the cheaper ones like this: https://www.sparkfun.com/products/7937

    • I had the same issue. I ended up doing some research and concluding that something like this would work. Don’t remember why I concluded that because once I got them I realized the prongs of the softpot were spaced correctly but they aren’t thick enough to be held in the female connectors. After futzing around for a while it seemed that they might slide in over the top of the connector (hard to describe without a diagram), or perhaps you’re meant to use that opening to close the crimps? In any case I ended up accidentally breaking the housing apart on one of them and exposing the individual wires with the metal crimp ends. I realized I could just slide the crimps over the prongs on the softpot and close them down with pliers. Not elegant but it works.

      Oh and since I accidentally snapped off one of the softpot’s prongs in the process of all this (yeah I’m that guy), I discovered that it is possible to solder directly to the softpot very carefully and quickly without killing it. YMMV..

  • I was wondering if it’s possible to trim down the sides of the ribbon to make it a bit thinner? I need to mount two of these side-by-side in a tray about 35mm wide. This means trimming the sides of the pots down. Would that just destroy them?

  • Has anyone used one of these? I am looking for a linear position readout for building CNC machines. The data sheet is somewhat vague about accuracy. Any idea about the accuracy/repeatability of these linear pots? Thanks for any replies.

  • 500mm is a smidge under 20" for people like me who are to lazy to do the math.
    I believe it would be around 19.64


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