From: Keith Packard <keithp@keithp.com>
Date: Tue, 2 Jul 2024 05:18:23 +0000 (-0700)
Subject: Found a random 7S.py fp generator on my machine
X-Git-Tag: telelco-v3.0~21^2~2
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=6710fe2c215afcff9d68812d7b71a71623e9bf38;p=hw%2Faltusmetrum

Found a random 7S.py fp generator on my machine

I have no idea if it's correct or not ...

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/packages/7S.py b/packages/7S.py
new file mode 100755
index 0000000..f25c24c
--- /dev/null
+++ b/packages/7S.py
@@ -0,0 +1,71 @@
+#!/usr/bin/python3
+# Copyright 2007 by Bdale Garbee <bdale@gag.com>.  GPLv2
+#
+# Program to emit PCB footprint for 7S package used by Xtals
+#
+
+# dimensions in mm from 7s.pdf txc datasheet
+PinHeight = 1.00
+PinWidth = 0.9
+HSpacing = 0.85
+WSpacing = 0.65
+
+# freedfm.com round-off error bites us if we make this 700...
+MinAnnular = 725
+MinClearance = 600
+MaskDelta = 300
+
+import sys
+
+# we're going to use the 1/100 of a mil fundamental unit form
+def mm2mils100( mm ):
+	return int( mm / 25.4 * 1000.0 * 100.0 + 0.5 )
+
+print ('# author: Bdale Garbee')
+print ('# email: bdale@gag.com')
+print ('# dist-license: GPL 2')
+print ('# use-license: unlimited')
+
+print ('Element[0x0 "7S" "" "" 0 0 0 0 0 100 0x0]')
+print ("(")
+print ('   Pad[',\
+ 	mm2mils100(WSpacing/2 + PinWidth/2), \
+	mm2mils100(-(HSpacing/2 + PinWidth/2)), \
+ 	mm2mils100(WSpacing/2 + PinWidth/2), \
+	mm2mils100(-(HSpacing/2 + PinHeight - PinWidth/2)), \
+	mm2mils100(PinWidth), \
+	(MinClearance*2), \
+	mm2mils100(PinWidth)+(MaskDelta*2), \
+	'"pin2" "2" 0x0100]')
+
+print ('   Pad[',\
+ 	mm2mils100(WSpacing/2 + PinWidth/2), \
+	mm2mils100(HSpacing/2 + PinWidth/2), \
+ 	mm2mils100(WSpacing/2 + PinWidth/2), \
+	mm2mils100(HSpacing/2 + PinHeight - PinWidth/2), \
+	mm2mils100(PinWidth), \
+	(MinClearance*2), \
+	mm2mils100(PinWidth)+(MaskDelta*2), \
+	'"pin1" "1" 0x0100]')
+
+print ('   Pad[',\
+ 	mm2mils100(-(WSpacing/2 + PinWidth/2)), \
+	mm2mils100(HSpacing/2 + PinWidth/2), \
+ 	mm2mils100(-(WSpacing/2 + PinWidth/2)), \
+	mm2mils100(HSpacing/2 + PinHeight - PinWidth/2), \
+	mm2mils100(PinWidth), \
+	(MinClearance*2), \
+	mm2mils100(PinWidth)+(MaskDelta*2), \
+	'"pin4" "4" 0x0100]')
+
+print ('   Pad[',\
+ 	mm2mils100(-(WSpacing/2 + PinWidth/2)), \
+	mm2mils100(-(HSpacing/2 + PinWidth/2)), \
+ 	mm2mils100(-(WSpacing/2 + PinWidth/2)), \
+	mm2mils100(-(HSpacing/2 + PinHeight - PinWidth/2)), \
+	mm2mils100(PinWidth), \
+	(MinClearance*2), \
+	mm2mils100(PinWidth)+(MaskDelta*2), \
+	'"pin3" "3" 0x0100]')
+
+print (")")