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Electronics Forum / CAD / August 2005



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Patrice - 26 Aug 2005 10:45 GMT
Hello
I would place 25 LED's on a circle.
I have DXP 2004 but i see no way to do it.
Has anyone a solution ?
thanks
Peter Bennett - 26 Aug 2005 18:18 GMT
>Hello
>I would place 25 LED's on a circle.
>I have DXP 2004 but i see no way to do it.
>Has anyone a solution ?
>thanks

Calculate the X and Y coordinates for the center of each LED, and
place them manually.  This will be easier if you create a special
footprint fo rthe LED, with the reference position in the center of
the LED, rather than on one of the pins.  The position of a placed
component can be "fine-tuned" on hte component edit form.

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Spehro Pefhany - 26 Aug 2005 19:09 GMT
>>Hello
>>I would place 25 LED's on a circle.
[quoted text clipped - 7 lines]
>the LED, rather than on one of the pins.  The position of a placed
>component can be "fine-tuned" on hte component edit form.

That's what I did when I had to lay out 32 LEDs in a circle.

It's easy to write a little program to calculate the centers (and
rotation angle is you want to rotate the footprints), or just use a
spreadsheet. Copy and paste 50 or 75 values takes little time.

And yes, I did create a footprint with 0,0 in the center!

Best regards,
Spehro Pefhany
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Simon Peacock - 28 Aug 2005 06:11 GMT
Simplest way... work out the angle ... 360 / 25 = 14.4 degrees
Place one component where you want the LED to be with the correct designator
minus 1
then copy it with the origin of the copy set to the centre of the circle
paste special... -> paste array -> circular -> 14.4 degrees, 25 item count
OK then click on the centre of the circle twice ...
25 leds will appear overwriting the first which will need to be removed :-)
then just tidy the designators etc.

Simon

> >>Hello
> >>I would place 25 LED's on a circle.
[quoted text clipped - 18 lines]
> Best regards,
> Spehro Pefhany
Patrice - 30 Aug 2005 13:15 GMT
Thank you, easier should not be possible

> Simplest way... work out the angle ... 360 / 25 = 14.4 degrees
> Place one component where you want the LED to be with the correct designator
[quoted text clipped - 35 lines]
>
> http://www.speff.com
 
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