X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=fairphone-case.scad;h=b781957575f5c684fd266d355dbcc854857e9e6c;hb=8f760c16548a66f4921aeaf726acfbb9e17a3d4c;hp=c0df34586c8f547aa319c0e852f1871676bb8ab3;hpb=5fa25a075832aeca10193e2f92b42d6bb3cfaaef;p=reprap-play.git
diff --git a/fairphone-case.scad b/fairphone-case.scad
index c0df345..b781957 100644
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -1,5 +1,122 @@
// -*- C -*-
+// Hard case for Fairphone 2
+//
+// Copyright 2018 Ian Jackson. There is NO WARRANTY.
+// See below for full licensing and disclaimer.
+//
+// Instructions
+//
+// 1. You will want to git clone this repository.
+//
+// 2. Decide about the notification LED aperture. See the variable
+// led_window_style, below. The default here is "ad-hoc
+// multi-colour", which can produces a translucent (clear-ish)
+// window set into the lid, even on a single-nozzle printer.
+// See "Ad-hoc multi-colour", below.
+//
+// 3. use "make" to generate the necessary files:
+//
+// make -j8 fairphone-case.auto.scads `for f in \
+// HingePrint \
+// LidWindowPrint \
+// LidPrint \
+// OneKeeperPrint \
+// Case \
+// ; do echo fairphone-case,$f.auto.stl; done`
+//
+// 4. Print them. Case and OneKeeperPrint should probably be
+// the same colour.
+//
+// For Lid and LidWindowPrint, if you are doing ad-hoc
+// multi-colour:
+// i. Set up for clear filament
+// ii. Print LidWindowPrint. Wait for it to finish.
+// It won't take long. As soon as it finishes, tell
+// your printer to warm up (so that in fact it does
+// not cool down).
+// iii. Leaving the output so far on the printbed, reload
+// your printer with the main lid colour.
+// iv. Print LidPrint. You can let this go unattended.
+//
+// 5. Assemble the hinge. You will need 4x M2 12mm machine screws
+// and 8x M2 full nuts.
+//
+// Make sure you get the hinge the right way round. If you're not
+// sure, run
+// openscad fairphone-case,DemoHinge.auto.scad
+// to see an assembly diagram.
+//
+// The nuts recess into the hinge. You will want very fine
+// pliers. As you screw each screw in, add the second nut when
+// the screw thread emerges from the first - this will be a
+// locknut. Screw each screw to an appropriate tightness for the
+// hinge stiffness. You want the lid-side hinge to be stiffer as
+// that makes closing the case work better.
+//
+// When you have the stiffness right, tighten the locknuts onto
+// each first nut.
+//
+// 6. In use:
+//
+// - To put the phone in, drop its RH side into the RH side of
+// the case. Then feed the keeper through the small hole.
+// Feed it right through.
+//
+// - The optional prop can be used to prop the phone up (in
+// portrait orientation only right now). See
+// openscad fairphone-case,DemoPropAngles.auto.scad
+//
+// Ad-hoc multi-colour
+//
+// This file is set up to let you make a translucent window using a
+// single-extruder printer, using a "two print run" technique. This
+// works well with our Lulzbot TAZ 5 and Aleph Objects' version of
+// Cura. If you are using a different printer, you may need to
+// adjust the parameters or try a different technique. In particular,
+// initial_layer_thick
+// set so that the window is one layer thick
+// initial_layer_width
+// set so that the slicer draws a rectangle around the whole
+// object, rather than putting a "skirt" or anything inside
+//
+// If you have a dual-extruder printer, you can set led_window_style
+// to 2 and do a single print of LidPrint and LidWindowPrint.
+//
+// Alternatively you can set it to 1 (just a hole) or 0 (no hole).
+//
+// Thanks to Clare Boothby for the ad-hoc multi-colour technique (and
+// the parameters for our Lulzbot TAZ 5 and Aleph Objects's Cura).
+//
+// Other phones
+//
+// It might well be possible to adapt this file for other phones.
+// If you do, let me know how you get on.
+//
+//
+// AUTHORSHIP, COPYRIGHT, LICENCE, AND LACK OF WARRANTY
+//
+// Copyright (C)2018 Ian Jackson.
+//
+// This program for generating a 3D model is free software: you can
+// redistribute it and/or modify it under the terms of the GNU
+// General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public
+// License along with this program. If not, see
+// .
+//
+// In particular DO NOT BLAME ME IF THIS CASE DOES NOT ADEQUATELY
+// PROTECT YOUR PHONE ! It is your responsibility to decide whether
+// this case will meet your needs.
+
include
phone = [ 75.0, 145.0 ];
@@ -21,10 +138,11 @@ led_window_style = 3;
// 3: like 2 but one-layer window for ad-hoc multi-colour
initial_layer_thick = 0.400; // ^ needed for mode 3 only
-initial_layer_width = 0.125; // ^ needed for mode 3 only
+initial_layer_width = 0.750; // ^ needed for mode 3 only
multicolour_gap = 0.15; // each side
phone_cnr_rad = 6.0;
+phone_rim_depth = 0.80; // includes allowance for a screen protector
button_cutout_depth = 9;
@@ -39,9 +157,9 @@ camera_pos_br = [ 22.300, 37.600 ]; // tl/br as seen from back
jack_pos = [ 13.83, 8.485 ];
jack_dia = 10.64 + .5; // some jack I had lying around
-led_pos = [ 12.50, 8.00 ];
-led_aperture = 5;
-led_windowledge = 0.75; // each side
+led_pos = [ 13.98, 10.00 ];
+led_aperture = 9;
+led_window_ledge = 0.75; // each side
noisecancelmic_pos = [ 19.54, 7.37 ]; // from rhs
noisecancelmic_dia = 4.00;
@@ -57,10 +175,12 @@ microusb_below = 0.0;
microusb_width = 16.12 + 1.25;
case_th_bottom = 2.5;
-case_th_lid = 2.5;
+case_th_lid = 3.0;
case_th_side = 2;
case_th_lip = 1.2;
+lid_screen_gap_extra = .66;
+
case_struts_count = 6;
case_struts_solid_below = 1.00;
case_struts_solid_above = 0.75;
@@ -196,7 +316,20 @@ kppa = [ kppb[0], kppf[1] ];
lpp10 = [ epp5[0] + lid_gap_x, kppc[1] + lid_gap_z ];
lpp11 = [ lpp10[0], epp5[1] + lid_gap_z ];
-lp_r12 = case_th_lid - (lpp11[1] - lpp10[1]);
+lpp14 = lpp10 + [1,0] * keeper_inner_width;
+// exact x posn not very important; must extend past end of keeper
+
+lpp15 = [ lpp14[0],
+ epp0[1] - phone_rim_depth + 1/2.5 * case_th_lid
+ + lid_screen_gap_extra ];
+// ^ beam theory says to maximise force before contact,
+// the gap below the `beam' (the lid) must be 1/3
+// the thickness (ie the lid thickness) if the beam
+// is solid, or 1/2 if it has a top and bottom only.
+// ours is mostly solid.
+
+lp_r12 = max(case_th_lid - (lpp11[1] - lpp15[1]),
+ case_th_lip);
lpp12 = [ epp4[0] + lp_r12, lpp11[1] ];
lpp13 = [ lpp12[0], lpp12[1] + lp_r12 ];
@@ -221,7 +354,7 @@ bppW = lpp10;
// notification led aperture
nla_r0 = led_aperture/2;
-nla_r1 = nla_r0 + led_windowledge;
+nla_r1 = nla_r0 + led_window_ledge;
nla_r2 = nla_r1 + multicolour_gap;
nla_t =
led_window_style >= 3 ? initial_layer_thick :
@@ -333,16 +466,16 @@ $prp_r10 = prl_r10;
module AdhocMultiprintFrame(phase, z0, zs) {
// from z0 to z0 + zs*layer
- extra = phase * 0.65 + 5;
+ extra = phase * (initial_layer_width + multicolour_gap) + 5;
xextra = extra + -epp4[0];
xrange = [ 0, phone_width ] + [-1,+1] * xextra;
yextra = extra + -epp4[0];
- yrange = [ -phone_height + -hppB[0] + hp_r2, 0 ] + [-1,+1] * yextra;
+ yrange = [ -phone_height + +hppB[0] - hp_r2, 0 ] + [-1,+1] * yextra;
p0 = [ xrange[0], yrange[0] ];
p1 = [ xrange[1], yrange[1] ];
echo(p0, p1);
translate([0,0, z0])
- mirror([0,0, zs<0])
+ mirror([0,0, zs<0 ? 1 : 0])
linear_extrude(height= initial_layer_thick)
difference(){
rectfromto(p0 - [1,1] * initial_layer_width,
@@ -377,7 +510,9 @@ module LidEdgeProfile(){
lpp12,
lpp13,
lpp13 + [10, 0],
- lpp10 + [10, 0]
+ lpp15 + [10, 0],
+ lpp15,
+ lpp14,
]);
intersection(){
circleat(lpp12, r=lp_r12);
@@ -386,10 +521,20 @@ module LidEdgeProfile(){
}
}
+module LidEdgeFoldClearanceProfile(){
+ polygon([ lpp10,
+ lpp11,
+ lpp11 + [-20, 0],
+ lpp11 + [-20, 20],
+ lpp11 + [+20, 20],
+ lpp10 + [+20, 0] ]);
+}
+
module ButtonCoverProfile(){
intersection(){
polygon(concat([ bppM, bppP, bppO, bppJ ],
- (enable_support ? [ bppU, bppV, bppW ] : []),
+ (enable_support && !$button_suppress_over_keeper
+ ? [ bppU, bppV, bppW ] : []),
[ bppL, bppK ]));
hull(){
EdgeProfile();
@@ -535,12 +680,13 @@ module CaseAperture(pos, dia, $fn) {
h = 60);
}
-module SideButton(y, y_ref_sign, l){
+module SideButton(y, y_ref_sign, l, suppress_over_keeper=0){
// y_ref_sign:
// +1 measured from top of actual phone to top of button
// -1 measured from bottom of actual phone to bottom of button
// 0 y is centre of button in coordinate system
$button_l= l;
+ $button_suppress_over_keeper= suppress_over_keeper;
eff_y = y_ref_sign > 0 ? -bumper [1] -y -l/2 :
y_ref_sign < 0 ? (-phone -bumper)[1] +y +l/2 :
y;
@@ -555,9 +701,9 @@ module LidButtonishLeg(y, y_ref_sign, l=buttonishleg_default_l_is_fudge) {
}
module Buttons(){
- Flip_rhs(1) SideButton(15.580, +1, 8.9) children(); // power
- Flip_rhs(1) SideButton(48.700, -1, 8.920) children(); // camera
- Flip_rhs(0) SideButton(30.800, +1, 21.96) children(); // volume
+ Flip_rhs(1) SideButton(15.580, +1, 8.9 ) children(); // power
+ Flip_rhs(1) SideButton(48.700, -1, 8.920 ) children(); // camera
+ Flip_rhs(0) SideButton(30.800, +1, 21.96, 1) children(); // volume
Flip_rhs( ) LidButtonishLeg(14, -1) children();
// Flip_rhs(0) LidButtonishLeg(20, +1, 20) children();
}
@@ -861,7 +1007,7 @@ module Case(){ ////toplevel
translate([phone_width/2, -400, kppe[1]])
mirror([1-abs($rhsflip - keeper_side),0,0])
cube([400, 800, 50]);
- if (enable_support)
+ if (enable_support && !$button_suppress_over_keeper)
rotate([-90,90,0])
translate([-400, -400, kppd[1]])
mirror([0,0,1])
@@ -912,11 +1058,34 @@ module Case(){ ////toplevel
}
}
+module LidAdhocMultiprintFrame(phase){
+ if (led_window_style >= 3) {
+ AdhocMultiprintFrame(phase, lpp13[1], -1);
+ }
+}
+
+module LidAroundEdges(){
+ AroundEdges(lpp10[1], lpp13[1] - lpp10[1], 0)
+ children();
+}
+
module Lid(){ ////toplevel
+ skew_centre = [0, lpp11[0], lpp11[1]];
difference(){
union(){
- AroundEdges(lpp10[1], lpp13[1] - lpp10[1], 0)
- LidEdgeProfile();
+ intersection(){
+ LidAroundEdges()
+ LidEdgeProfile();
+
+ translate(skew_centre)
+ multmatrix([[ 1, 0, 0, 0 ],
+ [ 0, 1, -2, 0 ],
+ [ 0, 0, 1, 0 ],
+ [ 0, 0, 0, 1 ]])
+ translate(-skew_centre)
+ LidAroundEdges()
+ LidEdgeFoldClearanceProfile();
+ }
// button covers
Buttons(){
@@ -965,9 +1134,7 @@ module Lid(){ ////toplevel
}
- if (led_window_style >= 3) {
- AdhocMultiprintFrame(1, lpp13[1], -1);
- }
+ LidAdhocMultiprintFrame(1);
}
module HingeLever(){ ////toplevel
@@ -993,6 +1160,33 @@ module HingeLever(){ ////toplevel
}
}
+module LidWindow(){ ////toplevel
+ translate([led_pos[0], -led_pos[1], lpp13[1]])
+ mirror([0,0,1])
+ cylinder(r= nla_r1, h=nla_t);
+ LidAdhocMultiprintFrame(0);
+}
+
+module LidWindowPrint(){ ////toplevel
+ rotate([0,180,0])
+ LidWindow();
+}
+
+module DemoLidWindowSelect(){
+ translate([led_pos[0], led_pos[1], -100]) {
+ translate([0, -30, 0]) cube([400, 400, 200]);
+ }
+}
+
+module DemoLidWindow(){ ////toplevel
+ %Lid();
+ LidWindow();
+ translate([0,40,0]){
+ color("blue") intersection(){ Lid(); DemoLidWindowSelect(); }
+ color("red") intersection(){ LidWindow(); DemoLidWindowSelect(); }
+ }
+}
+
module HingeLeverPrint(){ ////toplevel
rotate([-90,0,0])
translate([-phone_width/2, phone_height, 0])
@@ -1113,6 +1307,8 @@ module TestSelectFrame(){
module TestSelectLidFrame(){
TestSelectFrame();
+ translate([led_pos[0], -led_pos[1], -50])
+ cylinder(r= nla_r2+3, h=100);
}
module TestFrameCase(){ ////toplevel
@@ -1126,12 +1322,33 @@ module TestFrameCase(){ ////toplevel
}
}
+module TestSelectTopApertures(){
+ translate([-100, -35, -100])
+ cube([400, 100, 200]);
+ LidAdhocMultiprintFrame(0);
+ LidAdhocMultiprintFrame(1);
+}
+
module TestTopApertures(){ ////toplevel
intersection(){
Case();
TestSelectFrame();
- translate([-100, -35, -100])
- cube([400, 100, 200]);
+ TestSelectTopApertures();
+ }
+}
+
+module TestLidTopAperturesPrint(){ ////toplevel
+ rotate([0,180,0]) intersection(){
+ Lid();
+ TestSelectLidFrame();
+ TestSelectTopApertures();
+ }
+}
+
+module TestLidWindowTopAperturesPrint(){ ////toplevel
+ rotate([0,180,0]) intersection(){
+ LidWindow();
+ TestSelectTopApertures();
}
}
@@ -1206,6 +1423,54 @@ module DemoPropAngles(){ ////toplevel
DemoPropAngle(prop_angles[i]);
}
+module DemoHingeAngle(ang1,ang2){
+ hL = [0, -(phone_height - hppT[0]), hppT[1]];
+ hC = [0, -(phone_height - hppB[0]), hppB[1]];
+
+ translate(hL)
+ rotate([ang2,0,0])
+ translate(-hL)
+ translate(hC)
+ rotate([ang1,0,0])
+ translate(-hC) {
+ color("red") Lid();
+ }
+
+ color("blue") intersection(){
+ Case();
+ union(){
+ translate([bppJ[0], -400, -200])
+ mirror([1,0,0])
+ cube([400, 800, 400]);
+ translate([10, -400, -200])
+ cube([10, 800, 400]);
+ }
+ }
+}
+
+module DemoHingeAngles(){ ////toplevel
+ angles = [ 0, 4, 8, 12 ];
+ echo("angles",angles);
+ for (i=[0 : len(angles)-1]) {
+ translate(i * [0, 0, 30]) {
+ DemoHingeAngle(0,angles[i]);
+ translate([0, 200, 0])
+ DemoHingeAngle(angles[i],0);
+ }
+ }
+}
+
+module DemoSelectAdhocLeftRight(right=0) {
+ translate([phone_width/2, -400, -100]) // , -15, -100 to cross-section
+ mirror([1-right, 0,0])
+ cube([400, 800, 200]);
+}
+
+module DemoLeft(){ ////toplevel
+ color("red") intersection(){ Case(); DemoSelectAdhocLeftRight(); }
+ color("blue") intersection(){ Lid(); DemoSelectAdhocLeftRight(); }
+}
+
module DemoFrame(){ ////toplevel
color("red") TestFrameCase();
color("blue") intersection(){ Lid(); TestSelectLidFrame(); }