Making connections to the back of a printed circuit board - BMW Luxury Touring Community
 
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post #1 of 7 Old Apr 2nd, 2009, 10:03 am Thread Starter
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Making connections to the back of a printed circuit board

From the electrical challenged:

I'm trying to wire a Genie garage door remote control module, to a bike mounted pressure switch (two wires) and I think I need to make the connection on the back of the printed circuit board. (other suggestions welcome)

With a single wire, I have located several points on the board that will work and all are tiny points.

Is there a glue that will work reliably to connect a wire or do I need to make a soldered joint? I do have access to a radio shop, so getting it soldered might not be a problem.

Dano
Tampa, Fl.

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post #2 of 7 Old Apr 2nd, 2009, 11:25 am
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Re: Making connections to the back of a printed circuit board

Quote:
Originally Posted by dandiver
From the electrical challenged:

I'm trying to wire a Genie garage door remote control module, to a bike mounted pressure switch (two wires) and I think I need to make the connection on the back of the printed circuit board. (other suggestions welcome)

With a single wire, I have located several points on the board that will work and all are tiny points.

Is there a glue that will work reliably to connect a wire or do I need to make a soldered joint? I do have access to a radio shop, so getting it soldered might not be a problem.
I would do both. Solder the connection for a good electrical connection, then glue the wire to the PC board with hot-melt or similar to keep the soldered connection from failing due to vibration.

Randy Prade
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post #3 of 7 Old Apr 2nd, 2009, 11:45 am Thread Starter
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Re: Making connections to the back of a printed circuit board

Thanks Randy,

To keep from having to apply heat to the board, I was hoping that there was a magic glue that I could use instead of solder for the wire connection. I like the idea of gluing the wire to the board after the wire connection has been made.

Dano
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post #4 of 7 Old Apr 2nd, 2009, 12:46 pm
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Re: Making connections to the back of a printed circuit board

Dan,
Microcenter has a conductive epoxy that I've used for other purposes. It is a two-part material, but I can't recall the set time.

Might be a good back up with electrical solder and then this stuff!

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post #5 of 7 Old Apr 2nd, 2009, 1:22 pm
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Re: Making connections to the back of a printed circuit board

Quote:
Originally Posted by PMitchell
Dan,
Microcenter has a conductive epoxy that I've used for other purposes. It is a two-part material, but I can't recall the set time.

Might be a good back up with electrical solder and then this stuff!
I've tried conductive epoxy with little success on disposable battery terminals. But it must work for someone.

I'd say soldering is your best bet.

Dave
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post #6 of 7 Old Apr 2nd, 2009, 1:58 pm
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Re: Making connections to the back of a printed circuit board

Yep, solder, then hot glue to keep the wires from pulling away. I did mine this way a few years ago, and it worked a treat. I used small gauge solid (not stranded) wire too (had some left over from my garage door opener safety eye installation). The solid wire makes it a bit easier due to its stiffness. I also used my smaller pencil tip soldering iron, versus the larger big pistol grip soldering gun. Then I sharpened the tip a bit, and proceeded with caution.

Heat the wire first...hot enough to melt solder...then "tin" it (i.e. - coat with solder). Give it a tap while it's hot, so there aren't any solder dingle-berries. This way, you won't need any additional solder as you'll have plenty between what's already on the pc baord, and the coated wire.

Heat the pin point spot on the pc board while pressing the new wire against it. Once it begins to melt, immediately back off the soldering iron, hold the wire steady for a few sec's while the solder solidifies and "Bob's your uncle". Now, you just need a little micro momentary switch on the other end.

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post #7 of 7 Old Apr 3rd, 2009, 5:17 am Thread Starter
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Re: Making connections to the back of a printed circuit board

Thanks - I've still got a few contacts at the local Motorola shop and I think I'll go by with donuts. They should have all of the mini micro tools with the experts who do this for a living. I appreciate the solder tips and know when to leave it to the experts. Better than me making a mess...

Dano
Tampa, Fl.

12 K1600 GTL
02 K1200 LT (gone but not forgotten)
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