Initial commit.

dimensions.scad

@@ -0,0 +1,91 @@
+/////////////////////////////////////////////////////////////////////////////////
+// File for all dimensions, so they can be changed globally.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   17.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+// Allowance
+allowance05 = 0.5;
+allowance1 = 1;
+allowance2 = 2;
+
+// Dimesions holder
+holder_height = 172;
+holder_width = 18;
+holder_depth = 8;
+
+// Dimensions notch
+notch_height = 161;
+// Calculations to construct a triangle which can take a PCB
+biggest_pcb = 2;
+c = biggest_pcb + allowance05;
+x = c;
+y = sqrt( pow(x,2) - pow(c/2,2) );
+
+// Dimensions cuvette
+glass_thickness = 6;
+cuvette_width = 180 + 2*glass_thickness + allowance2;
+cuvette_depth = 50 + 2*glass_thickness + allowance2;
+
+// Dimensions lid
+lid_thickness = 4;
+lid_width = 180 + 2*glass_thickness + 2*lid_thickness + allowance2;
+lid_depth = 50 + 2*glass_thickness + 2*lid_thickness + allowance2;
+lid_height = 20;
+
+// Dimensions holder heater
+heater_diameter = 25 + allowance1; 
+heater_offset = 55;
+heater_pos = -lid_width/2 + heater_diameter/2 + 2*lid_thickness + 3;
+
+// Dimensions slot for the PCB holder arms
+slot_width = lid_width - heater_diameter - 2*lid_thickness - 20;
+slot_depth = holder_depth + allowance05;
+slot_height = 1.5 * lid_height;
+slot_pos = heater_pos + heater_diameter/2 + lid_thickness + 3;  
+
+// Dimensions service holes for temp. sensor and air tube
+service_hole_width = 10;
+service_hole_depth = 10;
+service_hole_height = lid_height;
+
+// Dimensions crossbar
+crossbar_height = 2.5 + allowance05;
+crossbar_width = 8 + allowance05;
+crossbar_depth = slot_width;
+
+// Dimensions lid
+lid_thickness = 4;
+lid_slot_width = 8;
+
+// Dimensions neck
+neck_diameter = holder_depth;
+neck_height = lid_thickness + allowance05;
+
+// Dimensions head 
+head_width = holder_width;
+head_depth = holder_depth;
+head_height = 5;
+
+// Suitable for M3 screw thread
+hole_diameter = 2.5;
+
+// Air system diameter
+air_system = 10;
+
+// Height difference between notch for PCB and the actual holder
+height_diff_1 = holder_height - notch_height;
+
+// Width difference between crossbar and holder
+width_diff_1 = holder_width - crossbar_width;
+
+// Dimensions bar that PCB does not fall down
+bar_width = holder_width/2;
+bar_depth = 6;
+// The height of this thing should exactely use the space which is available
+// between the notch for the PBC and the crossbar slot 
+bar_height = height_diff_1/4 - crossbar_height/2;
+
+// My color for everything
+myColor = "FireBrick";

pcb_holder_crossbar.scad

@@ -0,0 +1,17 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Adapter for drilling machine in the embedded lab.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   17.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Includes
+/////////////////////////////////////////////////////////////////////////////////
+include <dimensions.scad>
+use <dimensions.scad>
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+cube([crossbar_width - allowance05, crossbar_depth, crossbar_height - allowance05], center = true);

pcb_holder_crossbar.stl

@@ -0,0 +1,86 @@
+solid OpenSCAD_Model
+  facet normal -0 0 1
+    outer loop
+      vertex -4 74 1.25
+      vertex 4 -74 1.25
+      vertex 4 74 1.25
+    endloop
+  endfacet
+  facet normal 0 0 1
+    outer loop
+      vertex 4 -74 1.25
+      vertex -4 74 1.25
+      vertex -4 -74 1.25
+    endloop
+  endfacet
+  facet normal 0 0 -1
+    outer loop
+      vertex -4 -74 -1.25
+      vertex 4 74 -1.25
+      vertex 4 -74 -1.25
+    endloop
+  endfacet
+  facet normal -0 0 -1
+    outer loop
+      vertex 4 74 -1.25
+      vertex -4 -74 -1.25
+      vertex -4 74 -1.25
+    endloop
+  endfacet
+  facet normal 0 -1 0
+    outer loop
+      vertex -4 -74 -1.25
+      vertex 4 -74 1.25
+      vertex -4 -74 1.25
+    endloop
+  endfacet
+  facet normal 0 -1 -0
+    outer loop
+      vertex 4 -74 1.25
+      vertex -4 -74 -1.25
+      vertex 4 -74 -1.25
+    endloop
+  endfacet
+  facet normal 1 -0 0
+    outer loop
+      vertex 4 -74 1.25
+      vertex 4 74 -1.25
+      vertex 4 74 1.25
+    endloop
+  endfacet
+  facet normal 1 0 0
+    outer loop
+      vertex 4 74 -1.25
+      vertex 4 -74 1.25
+      vertex 4 -74 -1.25
+    endloop
+  endfacet
+  facet normal 0 1 -0
+    outer loop
+      vertex 4 74 -1.25
+      vertex -4 74 1.25
+      vertex 4 74 1.25
+    endloop
+  endfacet
+  facet normal 0 1 0
+    outer loop
+      vertex -4 74 1.25
+      vertex 4 74 -1.25
+      vertex -4 74 -1.25
+    endloop
+  endfacet
+  facet normal -1 0 0
+    outer loop
+      vertex -4 -74 -1.25
+      vertex -4 74 1.25
+      vertex -4 74 -1.25
+    endloop
+  endfacet
+  facet normal -1 -0 0
+    outer loop
+      vertex -4 74 1.25
+      vertex -4 -74 -1.25
+      vertex -4 -74 1.25
+    endloop
+  endfacet
+endsolid OpenSCAD_Model

pcb_holder_floor_prot.scad

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+/////////////////////////////////////////////////////////////////////////////////
+// Floor protection for cuvette.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   12.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Includes
+/////////////////////////////////////////////////////////////////////////////////
+include <roundy.scad>
+use <roundy.scad>
+include <dimensions.scad>
+use <dimensions.scad>
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+color(myColor)
+difference()
+{
+	union()
+	{
+		// Basic lid
+		translate([0, 0, lid_height/2])
+		roundy(lid_width, lid_depth, lid_height, true);
+		translate([-lid_width/2 + 5, -lid_depth/2 + 2, lid_height/2])
+		rotate([90, 0, 0])
+		linear_extrude(height = 6, center = true, convexity = 10, twist = 0)
+		union()
+		{
+		translate([0, 4, 0])
+		text("Etching Machine of the Embedded Systems Master", size = 6, valign = "center");
+		translate([0, -4, 0])
+		text("Designed by Maximilian Stiefel 2017", size = 6, valign = "center");
+		}
+	}
+	// Depening to put it over the cuvette
+	translate([0, 0, lid_height - lid_thickness])
+	cube([cuvette_width, cuvette_depth, lid_height], center = true);
+}

pcb_holder_holder_l.scad

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+/////////////////////////////////////////////////////////////////////////////////
+// Left holder part to anchor PCB with in the etching bath.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   17.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Includes
+/////////////////////////////////////////////////////////////////////////////////
+
+include <dimensions.scad>
+use <dimensions.scad>
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+color(myColor)
+difference()
+{
+	union()
+	{
+		// Cube for the base holder
+		cube([holder_width, holder_depth, holder_height], center = false);
+		
+		// Head
+		translate([0, 0, holder_height + neck_height])
+		cube([head_width, head_depth, head_height]);
+		
+		// Neck
+		translate([holder_width/2, holder_depth/2, holder_height])
+		cylinder(h = neck_height, r = neck_diameter/2);
+		
+		// Bar, that PCB does not fall 
+		translate([holder_width/2 - bar_width/2, -bar_depth, height_diff_1/2 - bar_height])
+		cube([bar_width, bar_depth, bar_height]);
+		
+		// Text
+		translate([holder_width/2 + 4, holder_depth, 0.2*holder_height])
+		rotate([90,0,180])
+		linear_extrude(height = 3, center = true, convexity = 10, twist = 0)
+		text("L", size = 10, valign = "center");
+		translate([0, holder_depth -1, (1/4)*height_diff_1 + 6])
+		rotate([90, 0, 270])
+		linear_extrude(height = 2, center = true, convexity = 10, twist = 0)
+		text("M3", size = 3, valign = "center");
+		translate([0, holder_depth/2, holder_height/2])
+		rotate([90, -90, 270])
+		linear_extrude(height = 2, center = true, convexity = 10, twist = 0)
+		text("Maximilian Stiefel 2017", size = 3, valign = "center");
+
+	}
+
+	union()
+	{
+		// Cube for notch
+		//translate([holder_width/2 - notch_width/2, -notch_depth +2, height_diff_1/2])
+		//cube([notch_width, notch_depth, notch_height], center = false);
+
+		// Triangular notch
+		translate([-c/2 + holder_width/2, -0.01, height_diff_1/2])
+		linear_extrude(height = notch_height, center = false)
+		polygon(points=[[0,0],[c/2,y], [c,0]], paths = [[0,1,2]]);	
+		
+		// Slots for crossbars
+		translate([width_diff_1/2, -1, (1/4)*height_diff_1 - crossbar_height/2])
+		cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+		translate([width_diff_1/2, -1, (3/4)*height_diff_1 + notch_height - crossbar_height/2])
+		cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+
+		// Drill holes for screws
+		translate([-1, holder_depth/2, (1/4)*height_diff_1])
+		rotate([0, 90, 0])
+		cylinder(h = 9, r = hole_diameter/2);
+		translate([0, holder_depth/2,(3/4)*height_diff_1 + notch_height])
+		rotate([0, 90, 0])
+		cylinder(h = 9, r = hole_diameter/2);
+
+		// Holes for the air system
+		// translate([holder_width/2, holder_depth + 1, 0])
+		// rotate([90, 0, 0])
+		// cylinder(h = holder_depth + 2, r = air_system/2);	
+	}
+}

pcb_holder_holder_r.scad

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+/////////////////////////////////////////////////////////////////////////////////
+// Left holder part to anchor PCB with in the etching bath.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   17.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Includes
+/////////////////////////////////////////////////////////////////////////////////
+
+include <dimensions.scad>
+use <dimensions.scad>
+
+/////////////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+color(myColor)
+difference()
+{
+	union()
+	{
+		// Cube for the base holder
+		cube([holder_width, holder_depth, holder_height], center = false);
+		
+		// Head
+		translate([0, 0, holder_height + neck_height])
+		cube([head_width, head_depth, head_height]);
+		
+		// Neck
+		translate([holder_width/2, holder_depth/2, holder_height])
+		cylinder(h = neck_height, r = neck_diameter/2);
+		
+		// Bar, that PCB does not fall 
+		translate([holder_width/2 - bar_width/2, -bar_depth, height_diff_1/2 - bar_height])
+		cube([bar_width, bar_depth, bar_height]);
+		
+		// Text
+		translate([holder_width/2 +5, holder_depth, 0.2*holder_height])
+		rotate([90,0,180])
+		linear_extrude(height = 3, center = true, convexity = 10, twist = 0)
+		text("R", size = 10, valign = "center");
+		translate([holder_width, 1, (1/4)*height_diff_1 + 6])
+		rotate([90, 0,90])
+		linear_extrude(height = 2, center = true, convexity = 10, twist = 0)
+		text("M3", size = 3, valign = "center");
+		translate([holder_width, holder_depth/2, holder_height/2])
+		rotate([90, -90, 90])
+		linear_extrude(height = 2, center = true, convexity = 10, twist = 0)
+		text("Maximilian Stiefel 2017", size = 3, valign = "center");
+
+	}
+
+	union()
+	{
+		// Cube for notch
+		//translate([holder_width/2 - notch_width/2, -notch_depth +2, height_diff_1/2])
+		//cube([notch_width, notch_depth, notch_height], center = false);
+
+		// Triangular notch
+		translate([-c/2 + holder_width/2, -0.01, height_diff_1/2])
+		linear_extrude(height = notch_height, center = false)
+		polygon(points=[[0,0],[c/2,y], [c,0]], paths = [[0,1,2]]);	
+		
+		// Slots for crossbars
+		translate([width_diff_1/2, -1, (1/4)*height_diff_1 - crossbar_height/2])
+		cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+		translate([width_diff_1/2, -1, (3/4)*height_diff_1 + notch_height - crossbar_height/2])
+		cube([crossbar_width, holder_depth + 2, crossbar_height], center = false);
+
+		// Drill holes for screws
+		translate([holder_width/2 + 1, holder_depth/2, (1/4)*height_diff_1])
+		rotate([0, 90, 0])
+		cylinder(h = 9, r = hole_diameter/2);
+		translate([holder_width/2 + 1, holder_depth/2,(3/4)*height_diff_1 + notch_height])
+		rotate([0, 90, 0])
+		cylinder(h = 9, r = hole_diameter/2);
+
+		// Holes for the air system
+		// translate([holder_width/2, holder_depth + 1, 0])
+		// rotate([90, 0, 0])
+		// cylinder(h = holder_depth + 2, r = air_system/2);	
+	}
+}

pcb_holder_lid.scad

@@ -0,0 +1,69 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Lid for cuvette with pcb holder slots and a possibility to put a heater.
+//
+// Author:              Maximilian Stiefel
+// Last modification:   17.06.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// Includes
+/////////////////////////////////////////////////////////////////////////////////
+include <roundy.scad>
+use <roundy.scad>
+include <dimensions.scad>
+use <dimensions.scad>
+
+/////////////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////////////
+color(myColor)
+difference()
+{
+	union()
+	{
+		// Basic lid
+		translate([0, 0, lid_height/2])
+		roundy(lid_width, lid_depth, lid_height, true);
+		//cube([lid_width, lid_depth, lid_height], center = true);
+		translate([heater_pos, 0, lid_height - 1])
+		cylinder(h = heater_offset + 1, r = heater_diameter/2 + lid_thickness);
+		
+		// Uppsala University Logo
+		translate([0, 5, lid_height])
+		linear_extrude(height = 1)
+		scale(0.08)
+		import("uppsla_university.dxf");
+		
+		// Text
+		translate([-lid_width/2 + 5, -lid_depth/2 + 2, lid_height/2])
+		rotate([90, 0, 0])
+		linear_extrude(height = 6, center = true, convexity = 10, twist = 0)
+		union()
+		{
+		translate([0, 4, 0])
+		text("Embedded Etcher", size = 6, valign = "center");
+		translate([0, -4, 0])
+		text("Revision 1.0", size = 6, valign = "center");
+		}
+	}
+	union()
+	{
+		// Depening to put it over the cuvette
+		translate([0, 0, lid_height/2 - lid_thickness])
+		cube([cuvette_width, cuvette_depth, lid_height], center = true);
+		
+		// Hole for heater
+		translate([heater_pos, 0, -1])
+		cylinder(h = heater_offset + lid_height + 2, r = heater_diameter/2);
+		// Slot for the PCB holder arms
+		translate([slot_pos, -slot_depth/2, 0])
+		cube([slot_width, slot_depth, slot_height], center = false);
+		
+		// Service holes
+		translate([-lid_width/2 + lid_thickness + 5, -lid_depth/2 + lid_thickness + 3, (1/2)*lid_height])
+		cube([service_hole_width, service_hole_depth, service_hole_height]);
+		translate([lid_width/2 - lid_thickness - service_hole_width -5, -lid_depth/2 + lid_thickness + 3, (1/2)*lid_height])
+		cube([service_hole_width, service_hole_depth, service_hole_height]);
+
+	}
+}

roundy.scad

@@ -0,0 +1,37 @@
+/////////////////////////////////////////////////////////////////////////////////
+// Module for a open box with rounded edges.
+//
+// Author: 		Maximilian Stiefel
+// Last modification: 	26.04.2017
+/////////////////////////////////////////////////////////////////////////////////
+
+module roundy(width, depth, height, center)
+{
+/////////////////////////////////////////////////////////////////////////
+// Vars
+/////////////////////////////////////////////////////////////////////////
+edge_rounding = 8;
+transx = -width/2;
+transy = -depth/2;
+transz = -height/2;
+
+/////////////////////////////////////////////////////////////////////////
+// Action
+/////////////////////////////////////////////////////////////////////////
+// Hull 4 cylinders	
+translate([transx, transy, transz])
+hull(){
+	// x=0, y=0
+	translate([edge_rounding, edge_rounding, 0])
+	cylinder(r = edge_rounding, h = height);
+	// x=width, y=0
+	translate([width - edge_rounding, edge_rounding, 0])
+	cylinder(r = edge_rounding, h = height);
+	// x=0, y=depth
+	translate([edge_rounding, depth - edge_rounding,0])
+	cylinder(r = edge_rounding, h = height);
+	//x=width, y=length
+	translate([width - edge_rounding, depth - edge_rounding,0])
+	cylinder(r = edge_rounding, h = height);
+}
+}

test.step

@@ -0,0 +1,37 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
+FILE_NAME('/home/maximilian/UppSense/cad/etching_machine/v2.0/test.step'
+  ,'2017-06-17T18:55:45',('Author'),(''),
+  'Open CASCADE STEP processor 6.8','FreeCAD','Unknown');
+FILE_SCHEMA(('AUTOMOTIVE_DESIGN_CC2 { 1 2 10303 214 -1 1 5 4 }'));
+ENDSEC;
+DATA;
+#1 = APPLICATION_PROTOCOL_DEFINITION('committee draft',
+  'automotive_design',1997,#2);
+#2 = APPLICATION_CONTEXT(
+  'core data for automotive mechanical design processes');
+#3 = SHAPE_DEFINITION_REPRESENTATION(#4,#10);
+#4 = PRODUCT_DEFINITION_SHAPE('','',#5);
+#5 = PRODUCT_DEFINITION('design','',#6,#9);
+#6 = PRODUCT_DEFINITION_FORMATION('','',#7);
+#7 = PRODUCT('ASSEMBLY','ASSEMBLY','',(#8));
+#8 = MECHANICAL_CONTEXT('',#2,'mechanical');
+#9 = PRODUCT_DEFINITION_CONTEXT('part definition',#2,'design');
+#10 = SHAPE_REPRESENTATION('',(#11),#15);
+#11 = AXIS2_PLACEMENT_3D('',#12,#13,#14);
+#12 = CARTESIAN_POINT('',(0.,0.,0.));
+#13 = DIRECTION('',(0.,0.,1.));
+#14 = DIRECTION('',(1.,0.,-0.));
+#15 = ( GEOMETRIC_REPRESENTATION_CONTEXT(3) 
+GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#19)) GLOBAL_UNIT_ASSIGNED_CONTEXT(
+(#16,#17,#18)) REPRESENTATION_CONTEXT('Context #1',
+  '3D Context with UNIT and UNCERTAINTY') );
+#16 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) );
+#17 = ( NAMED_UNIT(*) PLANE_ANGLE_UNIT() SI_UNIT($,.RADIAN.) );
+#18 = ( NAMED_UNIT(*) SI_UNIT($,.STERADIAN.) SOLID_ANGLE_UNIT() );
+#19 = UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(1.E-07),#16,
+  'distance_accuracy_value','confusion accuracy');
+#20 = PRODUCT_TYPE('part',$,(#7));
+ENDSEC;
+END-ISO-10303-21;