changed eye sensors drive voltage to 3.3V

I was blindingly placing diodes right after LDOs' output which caused voltage drop and not powering ESP32.

3DModels/distance_measuring_sensor_unit_mount.scad

@@ -0,0 +1,28 @@
+// unit: mm
+base1 = [45, 5, 20];
+base2 = [
+    base1[0],
+    20,
+    5
+];
+DMU_hole_separation = 37;
+screw_diameter = 3.2;
+screw_margin = 0.05;
+
+union() {
+    difference() {
+        cube(base2);
+        translate([base2[0]/2,base2[1] * 0.7,base2[2]/2]) 
+            cylinder(h = base2[2], d = screw_diameter + screw_margin, center = true, $fn = 360);
+    }
+    translate([0,0,base2[2]]) difference() {
+        cube(base1);
+        translate(base1/2) {
+            rotate([90,0,0]) translate([-1 * DMU_hole_separation/2,0,0])
+                cylinder(h = base1[1], d = screw_diameter + screw_margin, center = true, $fn = 360);
+            rotate([90,0,0]) translate([DMU_hole_separation/2,0,0])
+                cylinder(h = base1[1], d = screw_diameter + screw_margin, center = true, $fn = 360);
+        }
+    }
+}
+

README.md

@@ -1,3 +1,3 @@
 # line-trace-robot
 
-Line trace robot project from NIT
+Line trace robot project from NIT class.

ltr/fp-lib-table

@@ -1,4 +1,5 @@
 (fp_lib_table
   (version 7)
   (lib (name "Library")(type "KiCad")(uri "${KIPRJMOD}/Library.pretty")(options "")(descr ""))
+  (lib (name "printings")(type "KiCad")(uri "${KIPRJMOD}/printings.pretty")(options "")(descr ""))
 )

ltr/ltr.kicad_pro

@@ -454,6 +454,7 @@
       "single_global_label": "ignore",
       "unannotated": "error",
       "unconnected_wire_endpoint": "warning",
+      "undefined_netclass": "error",
       "unit_value_mismatch": "error",
       "unresolved_variable": "error",
       "wire_dangling": "error"
@@ -500,7 +501,7 @@
       "gencad": "",
       "idf": "",
       "netlist": "",
-      "plot": "output/",
+      "plot": "./",
       "pos_files": "",
       "specctra_dsn": "",
       "step": "",
@@ -611,7 +612,7 @@
     },
     "net_format_name": "",
     "page_layout_descr_file": "",
-    "plot_directory": "",
+    "plot_directory": "/home/kenryus/",
     "space_save_all_events": true,
     "spice_current_sheet_as_root": false,
     "spice_external_command": "spice \"%I\"",

ltr/output/ltr-B_Mask.gbr

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ltr/output/ltr-F_Paste.gbr

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ltr/output/ltr-NPTH.drl

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ltr/output/ltr-PTH.drl

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+X11.19Y-45.65
-X96.76Y-68.565
+X36.0Y-36.46
-X103.92Y-60.535
+X36.0Y-39.0
-X106.46Y-60.535
+X36.0Y-41.54
-X116.62Y-82.825
+X52.96Y-45.6
-X118.76Y-63.87
+X55.5Y-45.6
-X118.76Y-66.41
-X118.76Y-68.95
-X119.16Y-82.825
-X125.845Y-60.535
-X128.385Y-60.535
 T4
-X92.48Y-57.195
+X6.23Y-20.755
-X95.02Y-57.195
+X8.77Y-20.755
-X114.52Y-57.185
+X9.735Y-13.205
-X117.06Y-57.185
+X12.275Y-13.205
+T5
+X2.575Y-3.525
+X2.575Y-6.065
+X2.575Y-8.605
+X3.0Y-45.6
+X3.0Y-48.14
+X23.75Y-36.435
+X23.75Y-38.975
+X44.6Y-14.04
+X44.6Y-16.58
+X44.6Y-19.12
+X44.6Y-21.66
+X61.0Y-45.55
+X61.0Y-48.09
+X61.425Y-3.525
+X61.425Y-6.065
+X61.425Y-8.605
+X61.45Y-15.975
+X61.45Y-18.515
+X61.45Y-21.055
+T6
+X23.025Y-24.225
+X23.025Y-26.765
+X23.1Y-45.45
+X23.1Y-47.99
+X28.39Y-39.0
+X30.93Y-39.0
+X51.95Y-15.65
+X51.95Y-22.15
+X56.45Y-15.65
+X56.45Y-22.15
+T7
+X8.66Y-50.7
+X11.2Y-50.7
+X52.95Y-50.85
+X55.49Y-50.85
 M30

ltr/output/ltr-job.gbrjob

@@ -3,9 +3,9 @@
     "GenerationSoftware": {
       "Vendor": "KiCad",
       "Application": "Pcbnew",
-      "Version": "9.0.2"
+      "Version": "9.0.4"
     },
-    "CreationDate": "2025-07-30T16:59:03+09:00"
+    "CreationDate": "2025-09-17T16:18:14+09:00"
   },
   "GeneralSpecs": {
     "ProjectId": {
@@ -14,8 +14,8 @@
       "Revision": "rev?"
     },
     "Size": {
-      "X": 60.05,
+      "X": 64.05,
-      "Y": 40.05
+      "Y": 56.05
     },
     "LayerNumber": 2,
     "BoardThickness": 1.6,
@@ -27,7 +27,7 @@
       "PadToPad": 0.2,
       "PadToTrack": 0.2,
       "TrackToTrack": 0.2,
-      "MinLineWidth": 1.0,
+      "MinLineWidth": 0.2,
       "TrackToRegion": 0.5,
       "RegionToRegion": 0.5
     }