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Reply to "Is there an automatic trolly"

Several methods assume direct access to the DC motor inside the trolley.  This allows direction reversal by simply reversing the DC voltage polarity on the track; we can deal with how you make DC track voltage from your ZW later.  Your bump-n-go requires the mechanical bumping which moves a slide switch inside the trolley to perform this DC voltage reversal.

So the question is are you willing/able to do some minor re-wiring inside the trolley?  It most likely will involve soldering which I realize is not in everyone's comfort zone.

As for your in-hand occupancy detectors, I'd think you need one on each end of the line.  Hence at minimum, if using the 153 IR, you'd have to buy a 2nd one which is $30 or so.  I couldn't find an online description of the IRS-2 much less a company website; these cottage-industry widgets usually come in a stapled bag with a one page "manual".  If you are able to scan/photo the instructions or provide an online link to the same we can see its relevance.

In any case, the guys above have given a wide variety of off-the-shelf options.  This is a problem that has been solved!  I approach it as a re-invent-the-wheel exercise while sheltering in place.  I think it could be done with, say, $5-10 in components/modules for a DIY enthusiast - meaning guys that turn on the soldering iron and coffee pot at the same time each morning!  

 

Last edited by stan2004
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