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Creating an 8x8x8 3D LED Cube: The Base PCB

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Steve Manley
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Re: Upverter
Steve Manley   12/3/2014 1:54:41 PM
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@Aubrey: It's out now "How Well Can You Work With Others?"

Thanks for heads-up, I'll go have a read right now.

antedeluvian
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Re: Upverter
antedeluvian   12/3/2014 9:13:30 AM
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Steve

I look forward to reading it.

It's out now "How Well Can You Work With Others?"

 

buzzz1
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The Base PCB
buzzz1   11/30/2014 11:19:17 AM
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Where can I purchase the PCB base for the cube?

Steve Manley
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
Steve Manley   11/24/2014 2:46:22 PM
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@David: Just great minds thinking alike, huh? :-)

I'm have no idea who came up with the idea of an LED cube but I wish I could take credit for it. It was Max that planted the idea in my head for me to build my own and there are also plenty of others out there building them, but if some of my construction methods help others then that makes me happy. 

David Ashton
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
David Ashton   11/23/2014 10:55:17 PM
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Thanks so much for that Elizabeth.  (sigh) there's so much to learn.... :-)

I'm glad someone supports my philosophy on SMD connectors....

elizabethsimon
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
elizabethsimon   11/23/2014 9:44:11 PM
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The bit in the middle is for allowing a pick and place machine to mount the conectors using a standard vacuum head. Its common to have that type of removable bit on SMT connectors.

Where I work, SMT connectors are generally discouraged with some exceptions for jumper headers and things like JTAG that are only used in manufacturing.

 

Steve Manley
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
Steve Manley   11/23/2014 3:38:37 PM
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@David:

Thanks again for the info on using SM headers. If I were to redesign my base PCB I would more than likely consider your original advice on using through hole rather than SM connectors. With the borads I have remanining I'm kind of stuck with using the stagered 8 pin male headers. 

 

David Ashton
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
David Ashton   11/23/2014 1:42:15 PM
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@Steve - since you are stuck with SM connectors (a) use the biggest pads you can and (b) put lots of solder on the joint, but don't overheat it.  For your more wires, less current connectors, maybe use a box header like this so the effects of side to side movement won't be as great: 



(look on Farnell for "wire to board connectors, and tick surface mount and the number of ways you want to narrow it down)

Also consider putting a dab of epoxy at each end for extra strength.  If you're lucky you may be able to find something like this which has levers on the side to eject the corresponding plug smoothly:



This is Farnell 2289797 in 10-way, which would obviously be smaller than shown, and I don't know what that bit in the middle is doing.....    When the soldered bits are more widely spaced (side to side) like this you will get less likelihood of pulling it off the board than with your one where they are pretty much in line.

David Ashton
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
David Ashton   11/23/2014 1:23:21 PM
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@Steve..."Just located a blog by Ben and he deffinately hasent plagorised me"

Just great minds thinking alike, huh? :-)

Steve Manley
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Re: Surface Mount connectors - AAARRRGGGHHHH!!!
Steve Manley   11/23/2014 7:07:09 AM
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@David: BTW Elektor Magazine December issue has an 8x8x8 led cube very similar to yours.  You have to be a subscriber to get into their website and look.  It is by 

By Ben Rowland, Matrix Technology Solutions Ltd. (UK)

Just located a blog by Ben and he deffinately hasent plagorised me, He has access to a 3D printer to greate his jigs, lucky sod...

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