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increasing pot resistance via bs2 — Parallax Forums

increasing pot resistance via bs2

Let's Go!Let's Go! Posts: 124
edited 2009-06-18 22:22 in BASIC Stamp
i have a 2 axis bowmar joystick that i want to control a motor with. the joystick has 2- 5k pots. i need 2-50k resistance pots for the motor control. these are mil spec precise parts so i want to stay stock with the joystick. is there any way to increase the resistance of my 5k pots, for example multiplying it by a factor of 10, via a bs2 so i can use the stock 5k pots, yet get 0-50k resistance out of the stamp.

it would be very difficult to replace the stock parts with 50k pots.

thanks,

jim··

Comments

  • $WMc%$WMc% Posts: 1,884
    edited 2009-06-18 01:17
    shirkey9

    Yes. You'll have to find the digital pot though. I haven't seen a 50k dig. pot, But I haven't been looking for one ether. If You find one, then a simple RCTIME statement will do the trick. Take a look at EXP.#26 in the Stamp Works Manule. SW20-EX26-Servo_Control.BS2.

    This will help You in driving the Dig. Pot.


    _________$WMc%________

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    The Truth is out there············································ BoogerWoods, FL. USA
  • Let's Go!Let's Go! Posts: 124
    edited 2009-06-18 11:01
    thanks, i'll check it out.
  • Beau SchwabeBeau Schwabe Posts: 6,568
    edited 2009-06-18 15:49
    shirkey9,

    The DS1267-50 is a 50k dual pot version that can easily be controlled with a BS2

    www.datasheetcatalog.org/datasheet/maxim/DS1267.pdf

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    Beau Schwabe

    IC Layout Engineer
    Parallax, Inc.
  • LilDiLilDi Posts: 229
    edited 2009-06-18 16:47
    Caution, the DS1267 has a maximum current rating of 1ma
  • Let's Go!Let's Go! Posts: 124
    edited 2009-06-18 22:22
    thanks for the input
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