package for MCP9808 temperature sensor

diff --git a/packages/Makefile b/packages/Makefile
index ac01c52499500cfde21de0a9db382adf27630f4d..91162ad5364710f11fed92589506c6d7bc3937ec 100644 (file)
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -90,6 +90,7 @@ FOOTPRINTS= \
        PowerPAD32.fp \
        usb_onboard.fp \
        u-pdfn-8.fp \
+       dfn-2x3-8.fp \
        ufqfpn28.fp \
        ufqfpn24.fp \
        ufqfpn20.fp \

diff --git a/packages/dfn-2x3-8.5c b/packages/dfn-2x3-8.5c
new file mode 100644 (file)
index 0000000..c78c5db
--- /dev/null
+++ b/packages/dfn-2x3-8.5c
@@ -0,0 +1,78 @@
+/*
+ * Copyright © 2020 Bdale Garbee <bdale@gag.com>
+ * GPL v3
+ */
+
+/* intended for use with the MCP9808 temperature sensor and similar chips */
+
+load "footprint.5c"
+import Footprint;
+
+real pad_width = 0.75;
+real pad_height = 0.30;
+real pad_spacing = 0.50;       /* center to center, along the pads */
+real pad_center = 2.9;         /* center to center, across the part */
+
+real center_width = 1.75;
+real center_height = 1.45;
+
+real package_width = 3;
+real package_height = 2;
+
+real pad_x_off = pad_center / 2;
+
+real num_pad = 4;      /* per side */
+
+element_start("u-pdfn-8");
+
+real pad_off(int n) {
+       return pad_spacing * (n - (num_pad - 1) / 2);
+}
+
+real corner(int dx, int dy) {
+       real    x = dx * package_width / 2;
+       real    y = dy * package_height / 2;
+       real    len = 0.4;
+
+       line(x, y, x - dx * len, y);
+       line(x, y, x, y - dy * len);
+}
+
+corner(-1, -1);
+corner(1, -1);
+corner(-1, 1);
+corner(1, 1);
+
+real dot_off = -.3;
+
+line(-package_width/2 + dot_off, -package_height/2 + dot_off,
+     -package_width/2 + dot_off, -package_height/2 + dot_off);
+
+for (int pad = 0; pad < num_pad; pad++) {
+       /* left side (1-4) */
+
+       pad_mm(-pad_x_off,
+              pad_off(pad),
+              pad_width,
+              pad_height,
+              sprintf("%d", pad + 1),
+              sprintf("%d", pad + 1));
+       
+       /* right side (5-8) */
+
+       pad_mm(pad_x_off,
+              -pad_off(pad),
+              pad_width,
+              pad_height,
+              sprintf("%d", pad + 5),
+              sprintf("%d", pad + 5));
+       
+}
+
+/* center pad */
+pad_mm(0, 0,
+       center_width,
+       center_height,
+       "9", "9");
+
+element_end();

diff --git a/pcb-rnd.mk b/pcb-rnd.mk
index d630ec12b41a9db6e61172604dbb5119b930e11a..a574b804490a76f9d364db8f325f01ad09168326 100644 (file)
--- a/pcb-rnd.mk
+++ b/pcb-rnd.mk
@@ -1,7 +1,7 @@
 AM=../altusmetrum
 SCHEME=$(AM)/scheme
 
-.SUFFIXES: .lht .sch .ps .pdf .tdx
+.SUFFIXES: .lht .sch .ps .pdf .tdx .scad .stl
 
 # need to have PROJECT defined
 ifndef PROJECT
@@ -101,6 +101,12 @@ stencilsunlimited: $(BOTTOMCOPPER) $(PROJECT).toppaste.gbr $(OUTLINE)
 stencil:       $(PROJECT).lht
        pcb-rnd -x cam gerber:stencils --outfile out/$(PROJECT) $(PROJECT).lht
 
+$(PROJECT).scad:       $(PROJECT).lht
+       pcb-rnd -x openscad $(PROJECT).lht
+
+$(PROJECT).stl:        $(PROJECT).scad
+       openscad --o $(PROJECT).stl $(PROJECT).scad
+
 clean:
        rm -f *.bom *.drc *.log *~ $(PROJECT).ps *.gbr *.cnc *bak* *- *.zip *.tdx *.backup
        rm -f *.net *.xy *.cmd *.png partslist partslist.csv *.ger *.xln PCB*save