How to tell what drill precision is being used?

"Shareef Jalloq" <shareef@jalloq.co.uk> wrote in message

news:il6em7$53c$1@cheetah.cadsoft.de...

Hi there,

 

I'm pretty much going nuts here trying to generate the Gerbers for Olimex.

I've followed their guide for generating the required files which you can

find under "Eagle" at this link:  http://www.olimex.com/pcb/index.html.

But whatever I do I get garbage when I try to load the resulting Gerbers

into Viewplot.  They suggest modifying the "bin/eagle.def" file with the

EXCELLON entry that follows.

 

I can generate a bunch of Gerbers fine if I use an old modified Sparkfun

CAM job but am having no luck with the Olimex flow.

 

How can you tell what drill precision has been used to generate a drill

file?  The other layers look fine if I deselect 'mirror' from the bottom

layers but the drill file never matches.

 

Thanks, Shareef.

 

Type = DrillStation

Long = "Excellon drill station"

Init = "%%\n"

Reset = "M30\n"

ResX = 100000000100000000

ResY = 100000000100000000

;Rack = ""

Select = "%s\n" ; (Drill code)

Drill = "X%6.0fY%6.0f\n" ; (x, y)

Info = "Drill File Info:\n"\

"\n"\

" Data Mode : Absolute\n"\

" Units : 1/1000 Inch\n"\

" End Of Block : CR/LF\n"\

"\n"

 

You may look for this setting on your gerber viewer import and leave the cam

job alone. It is probably fine.

Doug

On 2011-03-09 00:39:47 +0000, Doug said:

 

You may look for this setting on your gerber viewer import and leave

the cam job alone. It is probably fine.

 

Doug

I'm using Viewplot which allows me to specify the drill precision when

I read in all the Gerbers.  With my normal flow I select 2.4 and

everything just works.  I've tried 2.3, 2.4, 2.5, 3.4, 3.5 and none of

them look correct.

The flow I'm using is:

1.  Run drillcfg.ulp

2.  Run excellon.cam using the supplied edits to eagle.def

3.  Run gerb24x.cam

I've tried running step 1. with both mm and inch as the unit specifier.

Same result.

Thanks.

Am 09.03.2011 10:39, schrieb Shareef Jalloq:

On 2011-03-09 00:39:47 +0000, Doug said:

>>

>> You may look for this setting on your gerber viewer import and leave

>> the cam job alone. It is probably fine.

>>

>> Doug

 

I'm using Viewplot which allows me to specify the drill precision when I

read in all the Gerbers.  With my normal flow I select 2.4 and

everything just works.  I've tried 2.3, 2.4, 2.5, 3.4, 3.5 and none of

them look correct.

 

The flow I'm using is:

1.  Run drillcfg.ulp

2.  Run excellon.cam using the supplied edits to eagle.def

3.  Run gerb24x.cam

 

I've tried running step 1. with both mm and inch as the unit specifier.

Same result.

 

Thanks.

 

Hi,

please try the following definition which contains more information

about the data format used:

Type     = DrillStation

Long     = "Excellon drill station"

Init     = "M48\n*INCH,LZ,00.0000\n"

Reset    = "M30\n"

ResX     = 10000

ResY     = 10000

;Rack     = ""

DrillSize  = "%sC%0.4f\n"        ; (Tool code, tool size)

AutoDrill  = "T%02d"             ; (Tool number)

FirstDrill = 1

BeginData  = "%%\nM72\nG90\n"

Units    = Inch

Select   = "%s\n"                ; (Drill code)

Drill    = "X%1.0fY%1.0f\n"      ; (x, y)

Info     = "Drill File Info:\n"\

           "\n"\

           " Data Mode         : Absolute\n"\

           " Units             : 1/10000 Inch\n"\

           "\n"

--

Mit freundlichen Gruessen / Best regards

Richard Hammerl

CadSoft Support -- hotline@cadsoft.de

FAQ: http://www.cadsoft.de/faq.htm

On 2011-03-09 10:20:49 +0000, Richard Hammerl said:

 

Hi,

 

please try the following definition which contains more information

about the data format used:

Sorry, I'm confused.  Doesn't this define how the tool outputs the

drill data for the board?  So by modifying it to what you suggested I'd

be diverging from what my board house have requested?

Shareef.

Am 09.03.2011 21:52, schrieb Shareef Jalloq:

On 2011-03-09 10:20:49 +0000, Richard Hammerl said:

>>

>> Hi,

>>

>> please try the following definition which contains more information

>> about the data format used:

 

Sorry, I'm confused.  Doesn't this define how the tool outputs the drill

data for the board?  So by modifying it to what you suggested I'd be

diverging from what my board house have requested?

 

Shareef.

 

The modified EXCELLON device has some additional information in

the header so that a software or the drilling machine gets better

information about the data format, units, precision....

The coordinates of the drill holes remain unchanged in this case.

--

Mit freundlichen Gruessen / Best regards

Richard Hammerl

CadSoft Support -- hotline@cadsoft.de

FAQ: http://www.cadsoft.de/faq.htm