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headlamp: better defaults for 20mm strap

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finn 2024-10-15 18:20:56 -07:00
parent 9c02c3a192
commit eb507fde40
1 changed files with 18 additions and 15 deletions
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33
outdoor/headlampv2.scad
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@ -1,8 +1,11 @@
// Headlamp bracket to mount lamp to nylon strap v1 // Headlamp bracket to mount lamp to nylon strap v2
// mostly tested with 21mm light and 20mm strap
// requires tweaking of plateScale when changing strap width // requires tweaking of plateScale when changing strap width
// v2 TODO: // v2 TODO:
// autoscale plate geometry with strapwidth, light cant // autoscale plate geometry with strapwidth, light cant
// headcurve is janky // headcurve is janky
//
// PRINT: +1 base, +1 perimeter, 50% infill, random seam
// downward light angle // downward light angle
lCant = 20; lCant = 20;
@ -10,25 +13,25 @@ lCant = 20;
clipRot = -30; clipRot = -30;
// clip length: // clip length:
clipLength = 29; clipLength = 29;
// light diameter, testing at 0.25 below measured for tightness? // light diameter, testing at 0.1 over measured
lDiam = 20.75; lDiam = 21.1;
// clip tightness, use 0.8 (tight) to 0.99 (no retention) // clip tightness, use 0.8 (tight) to 0.99 (no retention)
clippiness = 0.85; clippiness = 0.875;
// plate thick // plate thick
plateThick = 7; plateThick = 8.5;
// plate scale - how many times cliplength, affected by strap and cant // plate scale - how many times cliplength, affected by strap and cant
// 2.7 seems right for 25mm strap, 1.9 for 20mm strap // 2.7 seems right for 25mm strap, 1.9 for 20mm strap
plateScale = 1.5; plateScale = 1.45;
// strap width // strap width, rec 0.5mm under
strapWide = 21; strapWide = 19.5;
// strap thickness try 3mm // strap thickness try 2mm
strapThick = 2.1; strapThick = 1.9;
// head curve, puts slight curve in head side // head curve, puts slight curve in head side
hcRad = 400; hcRad = 250;
hcDepth = 4.8; hcDepth = 5.5;
minkRad = 2; minkRad = 2;
$fn = 20; $fn = 20;
@ -84,17 +87,17 @@ translate([0, 0, -22]){
cube([99, 99, 44], center = true); cube([99, 99, 44], center = true);
} }
// cut off back of plate channel for strap // cut off back of plate channel for strap
translate([-43.5 - minkRad, strapWide / 2 + 8, 0]){ translate([-44 - minkRad, strapWide / 2 + 8, 0]){
cube([88, strapWide, 222], center = true); cube([88, strapWide, 222], center = true);
} }
// add top slot // add top slot
translate([-2, strapWide / 2 + 8, (plateScale + 1) / 1.95 * clipLength * cos(lCant)]){ translate([-2, strapWide / 2 + 8, (plateScale + 1) / 1.825 * clipLength * cos(lCant)]){
rotate([0, 45, 0]){ rotate([0, 45, 0]){
cube([16, strapWide, strapThick], center = true); cube([16, strapWide, strapThick], center = true);
} }
} }
// add bottom slot // add bottom slot
translate([-2, strapWide / 2 + 8, strapWide / 2]){ translate([-2, strapWide / 2 + 8, strapWide / 4]){
rotate([0, -45, 0]){ rotate([0, -45, 0]){
cube([16, strapWide, strapThick], center = true); cube([16, strapWide, strapThick], center = true);
} }