kicad-developers team mailing list archive

[Jean-Paul Louis <louijp@xxxxxxxxx>]

I agree with Wayne,

Whatever we choose, we need to be consistent.
But we need to avoid huge symbols in order to create schematics that can size nicely.

my $0.02,
Jean-Paul (AC9GH)

On May 2, 2014, at 7:54 AM, Wayne Stambaugh <stambaughw@xxxxxxxxxxx> wrote:

> On 5/1/2014 4:54 PM, Lorenzo Marcantonio wrote:
>> On Thu, May 01, 2014 at 04:05:09PM -0400, Wayne Stambaugh wrote:
>>> My preference is 50mils but no matter what field text size you choose,
>>> please revise all of the existing symbols accordingly.  As of right now,
>>> symbol field text sizes are all over the map which makes for some ugly
>>> looking schematics.
>> 
>> For reference, I use 60mils for designator and name, 30mils for the
>> package and 50mils for pin and labels. Probably 50mils for everything
>> would be OK, except for packages which now have really long names...
>> 
>> Of course there is an ISO standard for lettering, too... given the ISO
>> font (a little more compressed than the kicad one), standard text
>> heights are 1.8, 2.5, 3.5, 5, 7, 10, 14 and 20mm. For paper sizes A1-A3
>> the recommended sizes are 2.5/3.5mm (text and titles) A0 and A4 use
>> respectively 3.5/5 and 1.8/2.5mm.
>> 
>> So according to ISO, the most common text size would be 100mils (from
>> this the rule for 200mils between labeled lines, to avoid confusion).
>> 
>> IMHO this could be too big for current usage, unless you use large
>> format printers. I sometime handled *junction sheets* in A0 size, only
>> containing the index and intrasheet connections (something like a root
>> sheet in hierarchical design). A termocouple conditioner was something
>> like an A2 sheet... they where hand-drafted in the '80, however:P
>> 
>> There is a trick however: since everything is designed to be up and down
>> scaled across the A-series sizes, you can set paper to A3 and print to
>> A4. Or A2 and print to A3. It's a miracle how it still stays legible...
>> 
> 
> My primary concern is consistency.  I am less concerned about the actual
> text size.  As of right now, there is no consistency that I can see in
> the symbol libraries.
> 
> 
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