battery holder for 3 pieces 18650

diff --git a/packages/.gitignore b/packages/.gitignore
index a0d84acf081098d22a85fe2b8d53e33bf939218c..5b2260408c182e05f7e290fb4f72fcc32b3752ca 100644 (file)
--- a/packages/.gitignore
+++ b/packages/.gitignore
@@ -170,3 +170,4 @@ XLR3.fp
 XLR4.fp
 XLR5.fp
 sj-63033a.fp
+18650x3.fp

diff --git a/packages/18650x3.py b/packages/18650x3.py
new file mode 100755 (executable)
index 0000000..4720fa4
--- /dev/null
+++ b/packages/18650x3.py
@@ -0,0 +1,131 @@
+#!/usr/bin/python3
+# Copyright 2025 by Bdale Garbee <bdale@gag.com>.  GPLv3
+#
+# Program to emit PCB footprint for 3x 18650 battery holder
+#
+
+# dimensions in mm from AliExpress seller page and direct measurement
+BodyX = 60.0
+BodyY = 77.0
+
+PinSpacing = 72.0
+RowSpacing = 19.0
+
+Drill = 1.75           # diameter of drill hole
+Thickness = 2.75       # outer diameter of copper annulus
+Clearance = 1          # delta in diameter above Thickness for plane clearance
+Mask = 2.9             # mask opening diameter 
+
+SilkWidth = 10 # in units of 1/1000 inch 
+SilkNative = SilkWidth * 100 
+
+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 3')
+print('# use-license: unlimited')
+
+print('Element[0x0 "1MS1T1B4M7" "" "" 0 0 0 0 0 100 0x0]')
+print("(")
+print('   Pin[',\
+       mm2mils100(-RowSpacing), \
+       mm2mils100(-PinSpacing/2), \
+       mm2mils100(Thickness), \
+       mm2mils100(Clearance), \
+       mm2mils100(Mask), \
+       mm2mils100(Drill), \
+       '"pin1" "1" 0x0101]')
+
+print('   Pin[',\
+       mm2mils100(-RowSpacing), \
+       mm2mils100(PinSpacing/2), \
+       mm2mils100(Thickness), \
+       mm2mils100(Clearance), \
+       mm2mils100(Mask), \
+       mm2mils100(Drill), \
+       '"pin2" "2" 0x0001]')
+
+print('   Pin[',\
+       0, \
+       mm2mils100(-PinSpacing/2), \
+       mm2mils100(Thickness), \
+       mm2mils100(Clearance), \
+       mm2mils100(Mask), \
+       mm2mils100(Drill), \
+       '"pin3" "3" 0x0001]')
+
+print('   Pin[',\
+       0, \
+       mm2mils100(PinSpacing/2), \
+       mm2mils100(Thickness), \
+       mm2mils100(Clearance), \
+       mm2mils100(Mask), \
+       mm2mils100(Drill), \
+       '"pin4" "4" 0x0001]')
+
+print('   Pin[',\
+       mm2mils100(RowSpacing), \
+       mm2mils100(-PinSpacing/2), \
+       mm2mils100(Thickness), \
+       mm2mils100(Clearance), \
+       mm2mils100(Mask), \
+       mm2mils100(Drill), \
+       '"pin5" "5" 0x0001]')
+
+print('   Pin[',\
+       mm2mils100(RowSpacing), \
+       mm2mils100(PinSpacing/2), \
+       mm2mils100(Thickness), \
+       mm2mils100(Clearance), \
+       mm2mils100(Mask), \
+       mm2mils100(Drill), \
+       '"pin6" "6" 0x0001]')
+
+print('   ElementLine[',\
+        mm2mils100(-BodyX/2), \
+        mm2mils100(-BodyY/2), \
+        mm2mils100(-BodyX/2), \
+        mm2mils100(BodyY/2), \
+        SilkNative, ']')
+
+print('   ElementLine[',\
+        mm2mils100(-BodyX/2), \
+        mm2mils100(-BodyY/2), \
+        mm2mils100(BodyX/2), \
+        mm2mils100(-BodyY/2), \
+        SilkNative, ']')
+
+print('   ElementLine[',\
+        mm2mils100(BodyX/2), \
+        mm2mils100(-BodyY/2), \
+        mm2mils100(BodyX/2), \
+        mm2mils100(BodyY/2), \
+        SilkNative, ']')
+
+print('   ElementLine[',\
+        mm2mils100(-BodyX/2), \
+        mm2mils100(BodyY/2), \
+        mm2mils100(BodyX/2), \
+        mm2mils100(BodyY/2), \
+        SilkNative, ']')
+
+print('   ElementLine[',\
+        mm2mils100(-BodyX/15), \
+        mm2mils100(-BodyY/2.75), \
+        mm2mils100(BodyX/15), \
+        mm2mils100(-BodyY/2.75), \
+        2*SilkNative, ']')
+
+print('   ElementLine[',\
+        0, \
+        mm2mils100(-BodyY/2.75-BodyX/15), \
+        0, \
+        mm2mils100(-BodyY/2.75+BodyX/15), \
+        2*SilkNative, ']')
+
+print(")")

diff --git a/packages/Makefile b/packages/Makefile
index f9f505dbb0086c6c6e79d98c0d3a42a25715b629..f46ef76db2f1164bd7b8e8399674b1f1536104b5 100644 (file)
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -185,7 +185,8 @@ FOOTPRINTS= \
        XLR3.fp \
        XLR4.fp \
        XLR5.fp \
-       sj-63033a.fp
+       sj-63033a.fp \
+       18650x3.fp
 
 .5c.fp:
        nickle $*.5c -o $@