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gEDA-user: Symbol Design

To: gEDA User <geda-user@xxxxxxxxxxxxxx>
Subject: gEDA-user: Symbol Design
From: Steve Dobson <steve.dobson@xxxxxxxxxxxxxx>
Date: Sun, 21 Jun 2009 01:08:17 +0100
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Hash: SHA1

Hi all

After many years as a software developer I found myself wanting to learn
about hardware design and settled on gEDS/PCB as the design software.
So far I'm having fun.

I've designed symbols for some clock LED displays [1] I found on line
and am thinking of using in a project.  I think I've got most things
right from the symbol design guidelines and will be happy to submit it
to the symbol library - after all open source project are built on the
community contributing back and symbol design in the one obvious area
where we can all help.

However I am finding that defining the "pintype" to be a bit tricky.
I've read about the various values but that didn't help me much.  For an
LED package like the HDSP-B03E [1] should the common cathodes be of type
"pwr", "out", "io" or what?  After all the cathodes in this case can't
all be connected to ground at the same time, there must be some kind of
switch circuit so that only the appropriate digit is illuminated when
the input pins are activated.

I've added one the designs below, so if someone could be so kind as to
look it over and advise me on what could be done better that would be a
help.

Steve

[1] http://www.avagotech.com/docs/AV02-0568EN

========== hdsp-b03e.sym START ==========
v 20080127 1
P 1100 2500 1100 2200 1 0 0
{
T 1000 2500 5 8 0 0 90 0 1
pintype=io
T 1068 1870 5 8 1 1 270 6 1
pinlabel=1cc
T 1005 2350 5 8 1 1 180 0 1
pinnumber=12
T 1200 2500 5 8 0 0 90 0 1
pinseq=12
}
P 1500 2500 1500 2200 1 0 0
{
T 1400 2500 5 8 0 0 90 0 1
pintype=io
T 1469 1868 5 8 1 1 270 6 1
pinlabel=2cc
T 1405 2350 5 8 1 1 180 0 1
pinnumber=9
T 1600 2500 5 8 0 0 90 0 1
pinseq=9
}
P 1900 2500 1900 2200 1 0 0
{
T 1800 2500 5 8 0 0 90 0 1
pintype=io
T 1867 1873 5 8 1 1 270 6 1
pinlabel=3cc
T 1805 2350 5 8 1 1 180 0 1
pinnumber=8
T 2000 2500 5 8 0 0 90 0 1
pinseq=8
}
P 2200 2500 2200 2200 1 0 0
{
T 2200 2500 5 8 0 0 90 0 1
pintype=io
T 2167 1869 5 8 1 1 270 6 1
pinlabel=4cc
T 2105 2350 5 8 1 1 180 0 1
pinnumber=6
T 2300 2500 5 8 0 0 90 0 1
pinseq=6
}
P 300 700 300 1000 1 0 0
{
T 200 700 5 8 0 0 270 0 1
pintype=io
T 268 1169 5 8 1 1 270 0 1
pinlabel=dp
T 195 950 5 8 1 1 180 6 1
pinnumber=3
T 300 700 5 8 0 0 270 0 1
pinseq=3
}
P 700 700 700 1000 1 0 0
{
T 600 700 5 8 0 0 270 0 1
pintype=io
T 671 1133 5 8 1 1 270 0 1
pinlabel=a
T 595 950 5 8 1 1 180 6 1
pinnumber=11
T 700 700 5 8 0 0 270 0 1
pinseq=11
}
P 1100 700 1100 1000 1 0 0
{
T 1000 700 5 8 0 0 270 0 1
pintype=io
T 1064 1127 5 8 1 1 270 0 1
pinlabel=b
T 995 950 5 8 1 1 180 6 1
pinnumber=7
T 1100 700 5 8 0 0 270 0 1
pinseq=7
}
P 1500 700 1500 1000 1 0 0
{
T 1400 700 5 8 0 0 270 0 1
pintype=io
T 1468 1133 5 8 1 1 270 0 1
pinlabel=c
T 1395 950 5 8 1 1 180 6 1
pinnumber=4
T 1500 700 5 8 0 0 270 0 1
pinseq=4
}
P 1900 700 1900 1000 1 0 0
{
T 1800 700 5 8 0 0 270 0 1
pintype=io
T 1864 1135 5 8 1 1 270 0 1
pinlabel=d
T 1795 950 5 8 1 1 180 6 1
pinnumber=2
T 1900 700 5 8 0 0 270 0 1
pinseq=2
}
P 2300 700 2300 1000 1 0 0
{
T 2200 700 5 8 0 0 270 0 1
pintype=io
T 2268 1130 5 8 1 1 270 0 1
pinlabel=e
T 2195 950 5 8 1 1 180 6 1
pinnumber=1
T 2300 700 5 8 0 0 270 0 1
pinseq=1
}
P 2700 700 2700 1000 1 0 0
{
T 2600 700 5 8 0 0 270 0 1
pintype=io
T 2665 1117 5 8 1 1 270 0 1
pinlabel=f
T 2495 950 5 8 1 1 180 6 1
pinnumber=10
T 2700 700 5 8 0 0 270 0 1
pinseq=10
}
P 3100 700 3100 1000 1 0 0
{
T 3000 700 5 8 0 0 270 0 1
pintype=io
T 3071 1131 5 8 1 1 270 0 1
pinlabel=g
T 2995 950 5 8 1 1 180 6 1
pinnumber=5
T 3100 700 5 8 0 0 270 0 1
pinseq=5
}
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V 1595 1396 25 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
V 1631 1661 25 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
T 1034 1800 9 3 1 0 0 0 1
a1
T 1194 1676 9 3 1 0 90 0 1
b1
T 1163 1387 9 3 1 0 90 0 1
c1
T 984 1250 9 3 1 0 0 0 1
d1
T 888 1389 9 3 1 0 90 0 1
e1
T 918 1683 9 3 1 0 90 0 1
f1
T 1011 1529 9 3 1 0 0 0 1
g1
T 1384 1800 9 3 1 0 0 0 1
a2
T 1542 1672 9 3 1 0 90 0 1
b2
T 1514 1377 9 3 1 0 90 0 1
c2
T 1334 1250 9 3 1 0 0 0 1
d2
T 1241 1385 9 3 1 0 90 0 1
e2
T 1270 1685 9 3 1 0 90 0 1
f2
T 1361 1529 9 3 1 0 0 0 1
g2
T 1859 1800 9 3 1 0 0 0 1
a3
T 2021 1677 9 3 1 0 90 0 1
b3
T 1989 1377 9 3 1 0 90 0 1
c3
T 1809 1250 9 3 1 0 0 0 1
d3
T 1715 1382 9 3 1 0 90 0 1
e3
T 1741 1677 9 3 1 0 90 0 1
f3
T 1836 1529 9 3 1 0 0 0 1
g3
T 2209 1800 9 3 1 0 0 0 1
a4
T 2365 1661 9 3 1 0 90 0 1
b4
T 2336 1374 9 3 1 0 90 0 1
c4
T 2159 1250 9 3 1 0 0 0 1
d4
T 2063 1381 9 3 1 0 90 0 1
e4
T 2093 1676 9 3 1 0 90 0 1
f4
T 2186 1529 9 3 1 0 0 0 1
g4
T 1560 1332 9 3 1 0 0 0 1
dp2
T 1601 1707 9 3 1 0 0 0 1
dp3
B 200 1000 3000 1200 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
T 155 1068 9 10 1 0 90 0 1
HDSP-B03E
T 3300 2100 8 10 0 0 0 0 1
device=HDSP-B03E
T 3300 1900 8 10 0 0 0 0 1
description=88:88 0.56" Four Digit Seven Segment Display
T 3300 1300 8 10 0 0 0 0 1
numslots=0
T 3300 1500 8 10 0 0 0 0 1
footprint=HDSP-B0xE
T 300 2000 8 10 1 1 0 0 1
refdes=U?
T 3300 900 8 10 0 0 0 0 1
dist-license=GPL
T 3300 1700 8 10 0 0 0 0 1
documentation=http://www.avagotech.com/docs/AV02-0568EN
T 3300 1100 8 10 0 0 0 0 1
author=Steve Dobson
T 3300 700 8 10 0 0 0 0 1
use-license=Unlimited
=========== hdsp-b03e.sym END -==========
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