Consistency errors

Jim McAuley wrote on Fri, 02 September 2016 22:01

The DRC file is from Sunstone Circuits and is available to anyone who

would like to download it.

 

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So you still haven't changed your restring setting then?

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The DRC file is from Sunstone Circuits and is available to anyone who would like to download it.

Pardon me for butting in...

It appears to me that Jim is saying he's set the DRC rules right but

Rachael (and others) are sure he hasn't. The evidence does seem to

support this, so I wonder... has Jim misinterpreted something? Perhaps

something as simple as entering the required diameter where a radius is

needed? Would it be beneficial for him to post his DRC file for review?

On 02/09/16 19:01, rachaelp wrote:

Jim McAuley wrote:

 

Thanks for the offer, but the board has long been deleted and a new board is under construction. I did manage to clear the errors I was having but in doing so I came up with 2 questions.

Question 1:

My DRC rules state that the pad diameter must be a min of 8mil.

My part recomendation is a pad diameter of 8mil.

I have built the part according to the manufacturers recomendation.

Yet if you look at the part and the library side by side the rings of the part on the board are larger than the rings of the part in the library.

Which one will be used in the gerber file, the library or the board representation?

 

Question 2:

My problem has been with Clearence errors between pins of the same part.

The clearence of the pins according to the library is about 9mil, a fact that was confirmed by another member of this site.

The clearence distance listed in the DRC file is 8mil.

If I set this distance to 4mil, the errors go away. Isn't the distance from one point to another the same as the distance from another to the one?

Why does eagle count both as different distances?

As has been stated by myself and confirmed by Jorge several times now, look at the Restring detting in the DRC. Jorge gave you a long and detailed explanation of this earlier this afternoon and it explains exactly what you are seeing with the change in pad size between the library and board. This change in pad size is why setting the DRC clearance rules to 4mil fixes the issue. Don't do that, change the resting setting as we've told you many times.

 

Best Regards,

 

Rachael

 

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Jim McAuley wrote:

 

Thanks for the offer, but the board has long been deleted and a new board is under construction. I did manage to clear the errors I was having but in doing so I came up with 2 questions.

Question 1:

My DRC rules state that the pad diameter must be a min of 8mil.

My part recomendation is a pad diameter of 8mil.

I have built the part according to the manufacturers recomendation.

Yet if you look at the part and the library side by side the rings of the part on the board are larger than the rings of the part in the library.

Which one will be used in the gerber file, the library or the board representation?

 

Question 2:

My problem has been with Clearence errors between pins of the same part.

The clearence of the pins according to the library is about 9mil, a fact that was confirmed by another member of this site.

The clearence distance listed in the DRC file is 8mil.

If I set this distance to 4mil, the errors go away. Isn't the distance from one point to another the same as the distance from another to the one?

Why does eagle count both as different distances?

As has been stated by myself and confirmed by Jorge several times now, look at the Restring setting in the DRC. Jorge gave you a long and detailed explanation of this earlier this afternoon and it explains exactly what you are seeing with the change in pad size between the library and board. This change in pad size is why setting the DRC clearance rules to 4mil fixes the issue. Don't do that, change the resting setting as we've told you many times.

Best Regards,

Rachael

Thanks for the offer, but the board has long been deleted and a new board is under construction. I did manage to clear the errors I was having but in doing so I came up with 2 questions.

Question 1:

My DRC rules state that the pad diameter must be a min of 8mil.

My part recomendation is a pad diameter of 8mil.

I have built the part according to the manufacturers recomendation.

Yet if you look at the part and the library side by side the rings of the part on the board are larger than the rings of the part in the library.

Which one will be used in the gerber file, the library or the board representation?

Question 2:

My problem has been with Clearence errors between pins of the same part.

The clearence of the pins according to the library is about 9mil, a fact that was confirmed by another member of this site.

The clearence distance listed in the DRC file is 8mil.

If I set this distance to 4mil, the errors go away. Isn't the distance from one point to another the same as the distance from another to the one?

Why does eagle count both as different distances?

On 9/1/2016 1:30 PM, Jim McAuley wrote:

I didn't spend a week working on this problem, it was over a month.

There weren't 3 errors. There were 3 consistency errors, and 19 errors, from 4 pins, on two identical parts, that I was trying to correct that caused the consistency errors.

The last time I had this consistency errors I did send the file to Jorge, who corrected the problems but didn't tell me how. So nothing was learned there.

Hi Jim,

I think the best thing we could do right now is setup a screen share

where I'm seeing what you are seeing.

Please contact support@cadsoftusa.com and we can set something up to get

this sorted. I would also suggest that you walk away from the design

from a few hours and take a break. It's difficult to think straight and

assimilate direction when you've been staring at the problem for over a

month straight.

An old proverb reads "oppression can drive the wise one into madness".

From the way these post have been developing I get the feeling that you

are probably under a time crunch. We can all relate, those are some of

the worst times in engineer's life. Send me an e-mail, and we'll arrange

a screen share and get this resolved together. That way you can see step

by step how this works.

Best Regards,

Jorge Garcia

Cadsoft Support

Morten Leikvoll:

 

If you like, you can email the files (including customized libs) to me and I will offer free service to repair them under non-disclosure agreement.

 

Jim,

You should take up Morten's kind offer of free professional help! I was about to suggest you hire somebody to help you out under NDA when Morten posted this offer, I would definitely take him up on that if I were you.

Best Regards,

Rachael

CadSoft Guest wrote:

 

Hi Rachael,

 

I think that deleting the board is sometimes the fastest way to rebuild it correctly, especially if someone says he doesn't know how to delete a board.

Look at this thread and the help you and others have provided, long discussions which lead to nothing.

I have the impression that the poster did not do what you suggested so no positive result.

The poster should have placed the files here and I bet the users here would have helped immediately.

 

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Mit freundlichen Grüßen / With best regards

 

Joern Paschedag

 

I fear frustration and desperation have taken over and Jim is now battling these as well as inexperience with EAGLE. I can understand this, sometimes when you get totally bogged down in an issue you just get to a point where, no matter what, you just can't see the solution that is staring you in the face.

He has posted links to his .lbr files on another thread although they are on some strange hosting site that looks slightly like the type of site that also hosts adware and other crap so I am not downloading anything from there. He should post the .lbr file so we can get it straight from here (Jim: If you go to the advanced editor on here (Element 14) there is an attach button). As it's a commercial project I can understand why he wouldn't post the actual design files up.

Best Regards,

Rachael

On 01.09.2016 22:15, Jim McAuley wrote:

First, I have downloaded a DRC file from a board house, and that is what I'm using to check the parts. Second, how would I know if this file is changing the pads? I tried measuring the pad diameter by first changing the grid to a smaller increment and then recording the start diameter and the end diameter using the cursor.

Thirdly, I have no idea if the errors can be ignored. They are between the pins of the component so I assume that they are important. I was getting overlap errors on the pins, those I felt I could ignore.

This thread is frustrating reading. If you like, you can email the files

(including customized libs) to me and I will offer free service to

repair them under non-disclosure agreement. My email is provided below

slightly scrambled to protect from dumb spam bots.

yahoo.no, add mleikvol and @ before.

Jim McAuley wrote:

 

I never adjusted, touched, or changed the layers. This also happened three times.

Well I would check that tOrigins and bOrigins are both turned on anyway just to be absolutely sure as per Olin's suggestion.

Alternatively is something else selecting instead of the part you are trying to select? If so you can right click and select "Next" to scroll through the items which fall within the selection area until you get to the right one.