Comment on Virgin Physicists

• Spacehooks@reddthat.com ⁨17⁩ ⁨hours⁩ ago

  linear potentiometer 100% pain, but Multi meter and rotary or digital potentiometer could be simple enough.

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  • ChaoticNeutralCzech@feddit.org ⁨17⁩ ⁨hours⁩ ago

    Nope, same problem as linear. Can you get angle correct to 4 decimal places and prevent the contact from oxidation?

    “Digital potentiometers” are rotary encoders, which are switches, not resistive dividers.

    Another option is a multi-pole rotary switch with selectable resistors in each position, but that only gives you the available values.

    They are all larger and more expensive. Just use two E12 resistors in parallel or series, you can always get within 1 %. They cost a dime a dozen.

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    • Spacehooks@reddthat.com ⁨16⁩ ⁨hours⁩ ago

      Good info. Cheers mate!

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