Motor identification

Discussion in 'General Electronics Chat' started by Adamf001, Aug 10, 2012.

  1. Adamf001

    Thread Starter Member

    Sep 5, 2011
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    2
    I have these motors which I pulled out a toy robot, there are 5 wires prutuding from the wires, red and black, to run motor and 3 other wires connecterd to this clear disk, thing (pics bellow)
    could one of you please tell me what this thing is and what does it do?

    thanks AAC
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    Can you take a picture with a better focus?

    It looks to me like some switches. This can serve as feedback or stop switch. It seems to be attached to the gear box and may tell you the position of the motor axis or how many turns it did.
     
  3. Adamf001

    Thread Starter Member

    Sep 5, 2011
    67
    2
    Thanks, I think I read some where that there are motors that turn a certain angle depending on the 'signal' that has been sent... a square wave , the 'wider' the square wave the higher the angle the motor has turned?

    is this what I have? I've never seen these sort of motors before so I won't know...
     
  4. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    You have a simple DC motor with a gearbox and then a device that acts as a momentary switch. The motor gets voltage, turns the moving part of that switch at the other end of the gearbox until it makes a contact between one or more of the contacts connected to the wires. I'm almost 100% sure that this acts as end switch (stop switch).
     
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  5. Adamf001

    Thread Starter Member

    Sep 5, 2011
    67
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    so how would I connect these wires to use the end switch, well not the specific wires but how do they work,
    do I run a voltage through certain wires or would I use this with a Micro controller, so like when a connection has been made between two contact in the clear disk thing does it stop the motor control? ? how does it work.

    and thanks for the clarification of the motors praondevou :)
     
  6. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    First step: take a multimeter and verify which wire contacts to which one when you turn the wiper. It cannot be identified on the picture you posted (even though it' much better than the first one)

    There will need to be some control logic which decides the direction the motor can turn, according to the swiths' position.
     
  7. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
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    832
    The "motors" you've described seem to be hobby servo motors. This is not one of those. If you are still curious, for a description of How Do Servos Work, click on the link

    dj
     
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