From 98f4d3d694433071ac8cb0b747a3ebc6d6433646 Mon Sep 17 00:00:00 2001
From: Jonas Gunz <himself@jonasgunz.de>
Date: Thu, 6 Jul 2023 17:56:16 +0200
Subject: initial

---
 .gitignore         |  2 ++
 Makefile           | 43 ++++++++++++++++++++++++
 webcam_fmount.scad | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 142 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 webcam_fmount.scad

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..928e078
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.gcode
+*.stl
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..39a3000
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,43 @@
+SCAD=openscad
+
+STLOPTS= --export-format binstl
+PNGOPTS= --colorscheme BeforeDawn --viewall --autocenter --imgsize 800,800 \
+	 --render
+
+STLDIR = stlout
+PNGDIR = pngout
+
+SRC = $(wildcard *.scad)
+
+STL = $(addprefix $(STLDIR)/,$(SRC:.scad=.stl))
+PNG = $(addprefix $(PNGDIR)/,$(SRC:.scad=.png))
+
+.PHONY: _default
+_default: stl
+
+.PHONY: all
+all: clean stl png
+
+.PHONY: stl
+stl: $(STLDIR) $(STL)
+
+$(STLDIR)/%.stl: %.scad
+	@echo [ STL ] $<
+	@$(SCAD) $(STLOPTS) -o $@ $<
+
+png: $(PNGDIR) $(PNG)
+
+$(PNGDIR)/%.png: %.scad
+	@echo [ PNG ] $<
+	@$(SCAD) $(PNGOPTS) -o $@ $<
+
+$(PNGDIR):
+	@mkdir -p $(PNGDIR)/
+
+$(STLDIR):
+	@mkdir -p $(STLDIR)/
+
+.PHONY: clean
+clean:
+	@rm -rf $(STLDIR)/
+	@rm -rf $(PNGDIR)/
diff --git a/webcam_fmount.scad b/webcam_fmount.scad
new file mode 100644
index 0000000..5d9bbd7
--- /dev/null
+++ b/webcam_fmount.scad
@@ -0,0 +1,97 @@
+$fn=50;
+
+// diameter (not radius!)
+throat = 44.5;
+inner = 47.5;
+outer = 57;
+
+lip_width = 1.7;
+lip_height = 1.9;
+lip_positions = [[50,-35], [55,-155], [55,-270]];
+lip_offset = 0.8;
+
+flange_height = 10;
+
+module rounding_circle(radius, corner_radius, angle) {
+  rotate_extrude() {
+    translate([radius, angle>=180?corner_radius:0]) difference() {
+      rotate([0,0,angle]) square(corner_radius);
+      circle(corner_radius);
+    }
+  }
+}
+
+module lip(angle, offs) {
+  rotate([0,0,offs]) translate([0,0,lip_height/2])
+   rotate_extrude(angle=angle)
+    translate([inner/2 +0.1 - lip_width/2,0,0]) square([lip_width,lip_height], center=true);
+}
+
+module nikon_f_flange() {
+  difference() {
+    linear_extrude(flange_height) difference() {
+      circle(outer/2);
+      circle(inner/2);
+    }
+    translate([0,0,flange_height-1]) rounding_circle(29,1,0);
+  }
+
+  translate([0,0,flange_height - lip_height - lip_offset]) {
+    for (i = lip_positions) {
+      lip(i[0],i[1]);
+    }
+  }
+
+}
+
+screw_distance = 18.6;
+mount_base = 13.3;
+mount_wall = 1.2;
+sensor_distance = 46.5;
+
+base_thickness = 4;
+// if the sensor pertrudes from the mounting plane
+sensor_offset = 1;
+
+module screwpost_2d() {
+  r = 2;
+  screw=1;
+  difference() {
+    union() {
+      circle(r);
+      translate([0,-r]) square([(screw_distance-mount_base)/2,2*r]);
+    }
+    circle(screw);
+  }
+}
+
+module mount_base_2d() {
+  difference() {
+    square(mount_base,center=true);
+    offset(-mount_wall) square(mount_base, center=true);
+  }
+}
+
+module sensor_mount() {
+  mount_base_2d();
+  translate([-screw_distance/2,0]) screwpost_2d();
+  translate([ screw_distance/2,0]) rotate([0,0,180]) screwpost_2d();
+}
+
+
+translate([0,0,base_thickness]) {
+  h = sensor_distance-flange_height-base_thickness;
+  difference() {
+    hull() {
+      linear_extrude(0.01) square(mount_base, center=true);
+      translate([0,0,h]) linear_extrude(0.01) circle(d=outer);
+    }
+    hull() {
+      linear_extrude(0.01) offset(-mount_wall)square(mount_base, center=true);
+      translate([0,0,h]) linear_extrude(0.01) circle(d=inner);
+    }
+  }
+}
+
+translate([0,0,-sensor_offset]) linear_extrude(base_thickness + sensor_offset) sensor_mount();
+translate([0,0,sensor_distance-flange_height]) nikon_f_flange();
-- 
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