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Make your own crossover component, see images:
#1   cut 1 more piece of Nylon/Kapton tape  than the number of wires involved.
        (I use uninsulated 30AWG wire wrap wire)
#2   layout the first wire to lead spacing needed
#3   cover the first wire with a piece of tape with the carrier removed
#4   repeat with the second wire
#5   complete all wires until you are finished
#6   form the wires and cut to length, I usually leave 1/10” overhang
#7   take off the protector of the first piece of tape and stick to PCB.  Solder in place
#8   a sample of a simple X (crossover) component (full size)

EDIT:
If you want, you can cover the crossover component with hot glue.
Use freeze mist to cool glue down immediately.


* 2014-08-23_15-31-41.jpg (155.54 KB, 1408x985 - viewed 36 times.)

* 2014-08-23_15-32-50.jpg (103.8 KB, 851x698 - viewed 31 times.)
« Last Edit: August 23, 2014, 11:04:01 pm by LarryD » Logged

The way you have it in your schematic isn't the same as how you have it wired up! That goes for me too.

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You're for it now! Your fingerprint is on the internet   smiley-wink
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OOPS    smiley-roll-sweat
« Last Edit: August 23, 2014, 11:11:11 pm by LarryD » Logged

The way you have it in your schematic isn't the same as how you have it wired up! That goes for me too.

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You could make a jig:


* 2014-08-23_22-41-28.jpg (219.18 KB, 1070x1220 - viewed 27 times.)
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The way you have it in your schematic isn't the same as how you have it wired up! That goes for me too.

Leicester UK
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Hi All,
              I must have my silly head on today!! I just don't see the point of it??   Please explain.

Regards

Mel.
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There are times when making single sided boards that you may want to avoid multiple jumpers since some I.C.s. don't go just Pin 1 to Pin 1 etc.  

This is not the best example, however, consider the simple crossover component on my finger tip (with no finger print).
If I.C. X pin 1 goes to I.C. Y pin 2 and I.C. X pin 2 goes to I.C. Y pin 1, the crossover could be placed in-between the two I.C.s to accomplish this.

I would solder the crossover component on the foil side, just like a SMD resistor would be soldered.

Therefore the crossover component on the foil side contains the jumper(s) within itself.



* 2014-08-24_14-48-27.jpg (50.73 KB, 580x458 - viewed 8 times.)
« Last Edit: August 24, 2014, 04:07:21 pm by LarryD » Logged

The way you have it in your schematic isn't the same as how you have it wired up! That goes for me too.

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Hi,
         I find wire-wrapping a lot easier! and less fiddly! as long as your not talking high currents, etc, but they would I hope be tracked on the PCB...

Regards

Mel.
« Last Edit: August 25, 2014, 03:00:21 am by Cactusface » Logged

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Great thread! The insulation gets soft on my crossovers during soldering, which can lead to a short. I like this solution.

Sometimes you have a crossover on the same chip too -- like the two VCC/GNDs reversed on each row of the 28-PDIP ATMega328PU.
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I'll find out the manufacture of the nylon tape and report back.
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Its not nylon tape its UHMW tape.
http://www.leevalley.com/en/wood/page.aspx?p=32182&cat=1,110,43466,32182

Kapton tape is also a good choice but not as sticky.


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The way you have it in your schematic isn't the same as how you have it wired up! That goes for me too.

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