Change transparency of top layer

Question

I have an Eagle board file in which the top (red) copper layer is almost opaque, and the bottom (blue) layer barely visible behind it. I assume this can be adjusted as all my other files are fine, but I can't find the option for it. Can anyone help?

Thanks.

autodeskguest · Accepted Answer

warrenbrayshaw wrote on Wed, 21 May 2014 05:11

On 20/05/2014 2:28 p.m., Paul Riggs wrote:

I have an Eagle board file in which the top (red) copper layer is
almost
opaque, and the bottom (blue) layer barely visible behind it. I
assume
this can be adjusted as all my other files are fine, but I can't
find
the option for it. Can anyone help?

I suspect the bad board has more layers than the other. Turning off
the
internal layers should help.

It appears you have alpha blending turned on. It may help if you turn
that off.
Options > Set > Colors - Remove the tick from 'Use alpha blending'

If it's a board that came from someone else, it is possible the colour

palette settings are messed up. The colour palette indices are stored in

the EAGLE file but the palette itself is stored with your EAGLE

installation so it is possible that you're using the original designer's

indices into his palette but actually using your palette. This can make

things really bad.

To clean it up, run the following scripts:

script defaultcolors.scr

script mylayers.scr

By doing that you'll reset all the colours and layer information to what it

was out of the box.

The only problem with that is that it sets the background of the PCB to

"white" which I don't like. I take these, copy to my own script directory,

and then edit them slightly by adding this to the end of defaultcolors.scr

BRD:

set palette black;

window;

SCH:

set palette white;

window;

DEV:

set palette white;

window;

SYM:

set palette white;

window;

Then I create a new script called "reset-colors.scr" which has the two

script commands above and then I can reset the colors with one command

script reset-colors.scr

It seems like a lot of work for someone to do to simply reset the colours

to out of the box condition. I need to do this ALL THE TIME because I have

a different palette then everyone else. Just another reason why CadSoft

needs to put some effort into this and clean it up. EAGLE has a great

alpha-blending engine that is pretty much ignored because it takes too much

effort for most people to use. And certainly noobs will have no idea on

how to do all this.

Cheers,

James.

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