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How to make a electric motor go backwards with a contact switch

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joris.blanc
Posts: 914 - Karma: 6,584
Hello NS,

For a project I'm working on I have a slider that slides on a guide with the help from a motor.

I want something so that when it gets at the end of the guide the slider inverses direction (revers motors direction).

The motor I'm using is a https://solarbotics.com/product/gm9/
Click for larger image

I'm looking into using a little switch like this :
Click for larger image

But then I don't really know what to add onto it to make it work, A friend talked to me about a 555 timer IC is an integrated circuit (chip), so I'm going to look into that but shit looks complicated. I'm pretty sure there is an easier way !!!

So please NS help meee, I'm lost !!
Dec 7 2012 5:05AM
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prosnurfer
Posts: 1842 - Karma: 83

maybe you could wire it to a modle train control for forward and reverse control?  also adurino (sp) has some really nice controlers and programable setups for stepper motors. but you gotta do some research to figure out how to wire them and program them. maybe soldering.  its probaly going to cost you about 100 bucks nomatter how you do it.

is this for a time lapse?

Dec 7 2012 8:02AM
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Mag
Posts: 8155 - Karma: 14,809
A programmable IC would probably be the easiest way, a cheaper way would be to have switches at each end and when they're triggered have them reverse the direction. That'd be quite easy.
Dec 7 2012 8:03AM
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KrazyistKarl
Posts: 1725 - Karma: 599
some more details on this would be nice. I assume it has to be automatic? you could use normally open contact limit switches on either end, but you are still going to need something programmable, cheapest way I can think of is to use a programmable relay like a zelio. Extremely easy software to use, actually it can all be programmed on the relay itself, and with only using 2 inputs (one switch on either end) and maybe 1 more to start and stop it. That motor probably only has two leads, so you need to switch the polarities completely.
PM me if you need some help and I can try my best
Dec 7 2012 8:08PM
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mmallender.
Posts: 5805 - Karma: 936
h-bridge circuit, or if you use a switch with 6 contacts you can wire your motor in a way that when it is pressed it runs negative to positive and when depressed positive to negative.

something like this:

Click for larger image

that one in particular would also work well because it has a pressed down state that stays until it is pressed again, giving it a separate press on/press off state, rather than needing to hold the button down for the off state? i cant remember EXACTLY how to wire the 6 lead button, but ill look around when i get home if my solution works for you, lemme know
Dec 7 2012 8:39PM
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BrewskiJr
Posts: 5738 - Karma: 1,478
I'm a business major... idk wtf you guys are talking about
Dec 7 2012 8:42PM
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