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  • pin screen / actuator matrix (HELP)

    Discussion in 'The main mechanical design forum' started by wahaha686, Aug 15, 2011.

    1. wahaha686

      wahaha686 New Member

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      Pin Screen
      [​IMG]
      Actuator Matrix
      [​IMG]

      I like to build a pin screen made of linear actuators (like the actuator matrix). The Pin Screen will have ~600 pins. I will connect each pin to a servo (I need precision).

      The problem using linear actuators is the cost. Any suggestions on alternative designs?

      I'm currently considering a spring and pulley design.
      [​IMG]
       
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    3. wahaha686

      wahaha686 New Member

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    4. telecomguy

      telecomguy Member

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      Have you considered pneumatic cylinders. It might help to know a little more about the requirements. Magnitude of action, forces, density of pin field, response time, environment it will reside in, etc.
      <tg>
       
    5. wahaha686

      wahaha686 New Member

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      I have considered pneumatic parts. Programming the controller and maintenance is an issue.

      goal: to illustrate objects in 3D (volumetric display)

      requirements:
      accurate to 1mm, 50mm stroke, 1lb of linear force, any speed, <2 second response time, 1 pin every inch (26.5mm), will be operating in room temperature (in the office),
       
    6. srdfmc

      srdfmc Well-Known Member

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      Just reviewed this thread. Interesting project. I am sure by the time you'd got a solution. But I guess this can be done with a matrix of connector piloted by a chip based circuit and a magnetic field: All the pins are repulsed by the field unless those with no current ;)

      But it does not resolve the problem of friction with only a low voltage circuit at your disposal.

      Still it is an interesting project.

      Please, give us some feedback !
       

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