From 39d1060334fa4e3f68e6ecc09af5a724f2b28ff1 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Fri, 6 Feb 2026 17:51:50 +0100
Subject: [PATCH] n28 enclosure: decreased height by 1mm, increased ridge depth
 and height

---
 avr/devices/n28/enclosure.scad | 35 +++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/avr/devices/n28/enclosure.scad b/avr/devices/n28/enclosure.scad
index a45eeed..303af6e 100644
--- a/avr/devices/n28/enclosure.scad
+++ b/avr/devices/n28/enclosure.scad
@@ -2,7 +2,7 @@ $fn = 50;
 
 width = 23;
 length = 119;
-height = 21;
+height = 20;
 
 corner_radius = 2;
 wall_thickness = 1.5;
@@ -16,12 +16,13 @@ lid_tolerance = .3;
 
 hook_height = 1;
 hook_tolerance = 0.75;
+hook_slit_height = 2.5;
 
 airslit_height = 1.75;
 
-ridge_height = 16;
+ridge_height = 16.5;
 ridge_width = 1;
-
+ridge_depth = 2.5;
 
 
 
@@ -129,24 +130,24 @@ union() {
 
     // ridges to hold the pcb
     translate([(width/2)-wall_thickness, 0, ridge_height/2+(height-ridge_height)])
-      cube([ridge_width, ridge_width, ridge_height], center=true);
+      cube([ridge_depth, ridge_width, ridge_height], center=true);
 
     translate([-((width/2)-wall_thickness), 
                length/8,
                ridge_height/2+(height-ridge_height)])
-      cube([ridge_width, ridge_width, ridge_height], center=true);
+      cube([ridge_depth, ridge_width, ridge_height], center=true);
 
     translate([-((width/2)-wall_thickness), 
                -length/8,
                ridge_height/2+(height-ridge_height)])
-      cube([ridge_width, ridge_width, ridge_height], center=true);
+      cube([ridge_depth, ridge_width, ridge_height], center=true);
 
 
 }
 
 
 /* lid */
-translate([0, 0, 50]) { /* match at Z=17.5, otherwise 50*/
+translate([0, 0, 50]) { /* match at Z=16.5, otherwise 50*/
   difference() {
     union() {
         difference() {
@@ -171,26 +172,26 @@ translate([0, 0, 50]) { /* match at Z=17.5, otherwise 50*/
             // slits for hooks (upward facing side)
             translate([-((width/2)+wall_thickness/2),
                        length/8,
-                       lid_height-((hook_height+hook_tolerance)/2)])
-                cube([4, 9, hook_height+hook_tolerance], center=true);
+                       lid_height-((hook_slit_height)/2)])
+                cube([4, 9, hook_slit_height], center=true);
             translate([-((width/2)+wall_thickness/2),
                        -length/8,
-                       lid_height-((hook_height+hook_tolerance)/2)])
-                cube([4, 9, hook_height+hook_tolerance], center=true);
+                       lid_height-((hook_slit_height)/2)])
+                cube([4, 9, hook_slit_height], center=true);
 
             // slits for hooks (downward facing side)
             translate([(width/2)+(wall_thickness/2),
                        0,
-                       lid_height-((hook_height+hook_tolerance)/2)])
-                cube([4, 9, hook_height+hook_tolerance], center=true);
+                       lid_height-((hook_slit_height)/2)])
+                cube([4, 9, hook_slit_height], center=true);
             translate([(width/2)+(wall_thickness/2),
                        length/4,
-                       lid_height-((hook_height+hook_tolerance)/2)])
-                cube([4, 9, hook_height+hook_tolerance], center=true);
+                       lid_height-((hook_slit_height)/2)])
+                cube([4, 9, hook_slit_height], center=true);
             translate([(width/2)+(wall_thickness/2),
                        -(length/4),
-                       lid_height-((hook_height+hook_tolerance)/2)])
-                cube([4, 9, hook_height+hook_tolerance], center=true);
+                       lid_height-((hook_slit_height)/2)])
+                cube([4, 9, hook_slit_height], center=true);
 
         }