add makefile

.gitignore

@@ -1,3 +1,6 @@
+*.stl
+*.3mf
+
 # Created by https://www.toptal.com/developers/gitignore/api/linux,windows,macos,vim
 # Edit at https://www.toptal.com/developers/gitignore?templates=linux,windows,macos,vim
 

Makefile

@@ -0,0 +1,7 @@
+.PHONY: render
+
+render:
+	openscad --export-format binstl -o lower_case.stl lower_case.scad
+	openscad --export-format 3mf -o lower_case.3mf lower_case.scad
+	openscad --export-format binstl -o plate.stl plate.scad
+	openscad --export-format 3mf -o plate.3mf plate.scad

README.md

@@ -1,7 +1,11 @@
 CAD files for noisy cricket
 ===========================
 
-case and plate
+Create lower case and plate files by running:
+
+```shell
+make render
+```
 
 ---
 

lower_case.scad

@@ -1,3 +1,5 @@
+// This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
+
 include <util.scad>
 
 $fn = 64;

plate.scad

@@ -1,3 +1,5 @@
+// This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
+
 include <util.scad>
 
 $fn = 64;

util.scad

@@ -1,3 +1,5 @@
+// This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
+
 pcb_width = 139.7;
 pcb_depth = 82.55;
 pcb_radius = 3.175;