X-Git-Url: http://challenge-bot.com/repos/?a=blobdiff_plain;f=3d-printables%2Fsonar-table-top-holder.scad;h=bc7a96ba0baa8bd752657d7c93053c58f78890db;hb=3d90aff00bdea5d4a525d006d5390f9c5a25c635;hp=56d58f9c7af31d61ccc14866d0caf3540dd106ab;hpb=3d01ee802f2e98b25188fd8066044b527e5b09b3;p=challenge-bot diff --git a/3d-printables/sonar-table-top-holder.scad b/3d-printables/sonar-table-top-holder.scad index 56d58f9..bc7a96b 100644 --- a/3d-printables/sonar-table-top-holder.scad +++ b/3d-printables/sonar-table-top-holder.scad @@ -14,78 +14,6 @@ $fn = 60; -// 3/16 inch in mm deck_depth = 4.7625; -// 1/4 inch in mm = 6.35 -// subtract a little to be a squeeze fit -deck_depth = 4.7625 - 0.4; -// sonar sensor measurements taken with calipers: -// 10.82 in between, 42.33 outside, 15.82 diameter -// measured diameter of 15.82 with calipers, -// but when printed ends up being too small, so add some -sonar_diameter = 15.82 + 0.4; -sonar_radius = sonar_diameter / 2; -sonar_height = 13.8; -between_sonar_centers = sonar_diameter + 10.82; -// the sonar cylinders are placed on the pcb at slightly different positions -// from one sensor to the next, so this allows for that variance. -between_sonar_centers_variance = 2; -// keep at least this much plastic surrounding the sonar cylinder on all sides -buffer = 3; -sonar_holder_length = buffer + between_sonar_centers + sonar_diameter + buffer; -sonar_holder_width = buffer + sonar_diameter + buffer; -// sonar_holder_depth is deck_depth minus a little bit to make arm fit -// into deck holder -sonar_holder_depth = deck_depth - 0.7875; +include -deck_holder_length = sonar_holder_depth * 2 + deck_depth + 15; - -module sonars(){ - translate([between_sonar_centers / 2, 0, 0]){ - cylinder(r = sonar_radius, h = sonar_height);} - // for the variance with which the physical sonar cylinders are placed - translate([between_sonar_centers / 2 - between_sonar_centers_variance, 0, 0]){ - cylinder(r = sonar_radius, h = sonar_height); - translate([0, -sonar_radius, 0]){ - cube([between_sonar_centers_variance, sonar_diameter, sonar_height]);}} - translate([-between_sonar_centers / 2, 0, 0]){ - cylinder(r = sonar_radius, h = sonar_height);}} - -module sonar_holder(){ - elbow_length = deck_depth - 0.5; - difference(){ - cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]); - translate([sonar_holder_length / 2, sonar_holder_width / 2, -0.05]){ - sonars();}} - translate([sonar_holder_length, 0, 0]){ - cube([elbow_length, deck_depth, sonar_holder_depth]); - translate([elbow_length, 0, 0]){ - linear_extrude(height = sonar_holder_depth){ - polygon([[ 0, 0], - [sonar_holder_depth, 0], - [sonar_holder_depth, sonar_holder_width / 2], - [ 0, - sonar_holder_width / 2 + sonar_holder_depth]]);} - translate([0, (sonar_holder_width + sonar_holder_depth) / 2, 0]){ - cube([sonar_holder_depth / 2, - (sonar_holder_width - sonar_holder_depth) / 2 + 0.8, - sonar_holder_depth]);} - translate([-1.7, sonar_holder_width + 0.8, 0]){ - linear_extrude(height = sonar_holder_depth){ - polygon([[ 0, 0], - [sonar_holder_depth / 2 + 1.7, 4], - [sonar_holder_depth / 2 + 1.7, 0]]);}}}}} - -module deck_holder(){ - deck_holder_width = sonar_holder_width - deck_depth; - linear_extrude(height = deck_holder_width){ - difference(){ - square([deck_holder_length, sonar_holder_depth * 2 + deck_depth]); - translate([sonar_holder_depth, sonar_holder_depth]){ - square(deck_depth);} - translate([sonar_holder_depth * 2 + deck_depth, sonar_holder_depth]){ - square([deck_holder_length - (sonar_holder_depth * 2 + deck_depth), - deck_depth]);}}}} - -deck_holder(); -translate([0, sonar_holder_depth * 2 + deck_depth + 2, 0]){ - sonar_holder();} +sonar_holder();