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Servos 180°

Discussion in 'Electronics' started by Dieseldoctor, Oct 11, 2018.

< Wingtip Strobes | Connectors >
  1. Dieseldoctor

    Dieseldoctor New Member

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    My ongoing problem with servo travel.... I need a servo with 180°, but can't afford a tx with 150% overdrive. Solution _ disconnect the pot from the servo, and connect a remote pot linked to the part that is moving. It works on the bench, just needs fitting to my tipper truck.
     
  2. Tony

    Tony Administrator Staff Member

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    Interesting. Post up some pictures of the setup when you get it going! And what are you needing a 180º servo on?
     
  3. Dieseldoctor

    Dieseldoctor New Member

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    I am making a tipper mechanism for a truck. There is not room for a standard servo, so I have to use a miniature servo, but to get the power needed to lift a full tipper body I need the servo to throw 180°.
    Also, I want to use a 3 ch tx, but my tx 3rd ch is only full + / full -. The tipper body rotates through 90°, so with a 2/1 linkage, the power is right for the job. The remote position pot is connected to the tipper body, so the modified (to 360°) servo thinks it is a 180° SIMPLES!
     
  4. Tony

    Tony Administrator Staff Member

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    Nice! Be sure to post up some pictures of the project when you get a chance. This sounds pretty interesting.
     
  5. Dieseldoctor

    Dieseldoctor New Member

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    Pics of the actual tipper truck will be following, but atttached are the drawings for the truck
    TIPPER1.jpg TIPPER1.jpg tipper2.jpg tipper3.jpg TIPPER1.jpg tipper2.jpg tipper3.jpg
     
  6. murankar

    murankar Moderator Staff Member Armed Forces

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    I was wondering if you would be able to use two sservos with some mixing or a y harness to achieve your 180 degrees. Abused on your drawings it appears you might be able to.
     
  7. Dieseldoctor

    Dieseldoctor New Member

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    I've found the solution to the 180° servo problem - I've used a 360° continuous rotation servo to make a screw jack with the innards of an insulin syringe. This powers the tipper body. Another servo had the motor and gears removed, and this controls the limits of travel. I am well pleased with myself!!! Movie clip to follow when I work out how to shorten it
     

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  8. D.O.G.

    D.O.G. I Support Rc-Help! Rc-Help Supporter Goblin 380 Supporter

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    The pictures are awesome and thanks foe sharing Doc. Can't wait for the video :).
     
  9. Tony

    Tony Administrator Staff Member

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    That is an awesome idea. I would have never thought to modify a servo into a screw actuator. Like Ivan said, I can't wait for the video of it working!
     
  10. Dieseldoctor

    Dieseldoctor New Member

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    Can't seem to get the video uploaded, it's either too big or incorrect format, but I'll keep trying.
     
  11. Tony

    Tony Administrator Staff Member

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    You have to upload to youtube and then post the link here. We don't have the server space to host videos ourselves.
     
  12. Dieseldoctor

    Dieseldoctor New Member

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    Thanks for advice - I will try that.
     
  13. Dieseldoctor

    Dieseldoctor New Member

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    I hope that this shows my actuator working.
     
  14. Admiral

    Admiral Well-Known Member

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    Great stuff, well worked out, congratulations.
     
  15. D.O.G.

    D.O.G. I Support Rc-Help! Rc-Help Supporter Goblin 380 Supporter

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    Too cool...Awesome. Thanks for sharing :).
     
  16. Tony

    Tony Administrator Staff Member

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    That is fantastic! Keep the updates coming!
     
  17. Dieseldoctor

    Dieseldoctor New Member

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    The idea of making a screw actuator from a 360° servo is not mine - I got the idea off utube. I developed the idea of the remote position sensor myself, and instead of using commercially available brass lead screw and nut, which needs metalworking facilities, I just used what I had available, namely the coarse threaded plastic rod and nut from an insulin syringe.
     
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