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relay for garage door opener


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sergeantnic 
Member - Posts: 21
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Posted: November 24, 2009 at 1:04 PM / IP Logged  

Need somebody smarter than me to give me some dumbed down instructions for a little project.

I've got a motorcycle I'm going to install a garage door opener remote in with a momentary switch.  I'm going to solder that switch to the circuit board of the remote and stash the remote inside the bike somewhere.  I've done this on 2 other bikes and it worked out well.

My question is, I'd like to use a relay or some other method to make it so the momentary switch is "dead" unless the bike is turned on.

So basically I'll take a switched 12 volt wire to energize the relay but beyond that I'm not sure how to wire the thing up.

The momentary switch is just used to close a circuit on the garage door operner remote and I don't need the relay for powering anything just making the switch alive / dead as needed.

Thanks in advance for any help.

howie ll 
Pot Metal - Posts: 16,466
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Joined: January 09, 2007
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Posted: November 24, 2009 at 1:07 PM / IP Logged  
Why a relay? Just feed the switch from an ignition circuit.
sergeantnic 
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Posted: November 24, 2009 at 1:31 PM / IP Logged  

The switch does nothing with power it just closes a circuit on the garage door opener so I don't need to "feed" the switch.

I'm thinking a SPST relay. 

Left side of momentary switch goes to remote, right side of momentary switch goes to common (30) on SPST relay.

Coil is wired to 12 volt switched source.  Bike off, hit the switch, nothing happens.

Pin 87 on SPST relay goes to other side of garage door remote to complete the circuit.  When bike is on, relay is energized.  Push momentary button and it completes the circuit from pin 30 to pin 87. 

I think we have a winner.

the12volt 
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Posted: November 24, 2009 at 1:41 PM / IP Logged  
What size battery does the garage door opener normally use? What are you using as a power source for the garage door opener on the bike?
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sergeantnic 
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Posted: November 24, 2009 at 1:44 PM / IP Logged  
relay for garage door opener -- posted image.
the12volt 
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Posted: November 24, 2009 at 1:46 PM / IP Logged  
Are you using an internal battery to power the remote?
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sergeantnic 
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Posted: November 24, 2009 at 1:46 PM / IP Logged  

the12volt wrote:
What size battery does the garage door opener normally use? What are you using as a power source for the garage door opener on the bike?

I'll be using the battery that came with the remote.  They are good for 1 - 2 years so I'm not interested in powering the remote off the bike.  And I believe it's 6 volts.

Will the diagram I posted above work?  I know it's a crude non-engineered drawing but you get the idea.

the12volt 
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Posted: November 24, 2009 at 1:50 PM / IP Logged  
Yes, it will work.
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sergeantnic 
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Posted: November 24, 2009 at 1:53 PM / IP Logged  

the12volt wrote:
Yes, it will work.

Thanks.  Would you say in your opinion that's a pretty easy solution?  I didn't know if there was a better / easier way to go about it but this seems pretty straight forward for what I'm after.

the12volt 
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Posted: November 24, 2009 at 2:13 PM / IP Logged  

You're welcome. Yes, it's an easy solution.

In my opinion there is a better way with the same amount of time and work involved, but it basically comes down to personal preference. When I added the garage door opener to my bike, there were two things I didn't want to do... add a button and have to change batteries. You can power your 6 volt remote and use your high beam switch to activate the remote.

https://www.the12volt.com/installbay/forum_posts.asp~TID~106959

https://www.the12volt.com/installbay/forum_posts.asp~TID~114824~PN~1
https://www.the12volt.com/installbay/search.asp?KW=voltage+divider+6v&SM=1&SI=PT&FM=0&aid=1&OB=1&Submit=Start+Search

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