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Need circuit or program for small hanging trolley controll
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Engineering & Manufacturing > Electrical

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  • Posted: Wed, Feb 13, 2013
  • Time Left: Closed
  • Location: Anywhere
  • Client prefers freelancers from:
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  • Start: Immediately
  • Budget: Less than $500
  • Fixed Price Job
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I have a model trolley which uses a dc motor to drive on a line. I need this trolley to respond to three limit switches and also include a master power switch.

The trolley starts at point A and drives to point B where a limit switch on the trolley is activated and the trolley stops.

Next a mechanical action will cause a second limit switch to go from a closed position to an open position. This limit switch will trigger the trolley to return to point A and therefore must reverse the polarity of the power to the motor.

The trolley will stop at point A when a third limit switch is engaged and the motor will stop.


I only need a schematics that will for sure work once built.
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Added 13 FEB 2013, 17:07 PM EST
The whole systems must be very low weight and compact in size.

The power supply is two AA 1.5 volt batteries. I'm not sure if they are in series or parallel but I can find out easily.

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