Forward and reverse activated motor with single push?

Discussion in 'The Projects Forum' started by trpltongue, Jun 13, 2008.

  1. trpltongue

    Thread Starter New Member

    Jun 13, 2008
    Hello all!

    I am obviously new here but a friend of mine and I are building a miniature M1-Abrams tank including a breach loading cannon and I'm trying to figure out how to wire the breach loading motor.

    What I have is a 5amp 12V reversing motor. What I need to do is wire up a circuit whereby a single button push will move the motor from one travel limit to the other (i.e. the breach is normally closed, a single button push will open it fully, then close it fully).

    I've been thinking I could use a latching DPDT relay but can't quite figure out how to set it up so that it would stop at fully closed and still be able to start again.

    Any help would be greatly appreciated!

  2. SgtWookie


    Jul 17, 2007
    Have a look at the attached circuit I whipped up. It may take a few read-throughs of the explanation to understand it.
    Last edited: Jun 13, 2008