From c160ed4aa6f9e40d038351caa1b76b14bbc43ed8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Leopoldo=20Rodr=C3=ADguez?= <leo@helgen.tech>
Date: Fri, 25 Sep 2026 19:53:56 +0000
Subject: [PATCH] v6 T16 script + bump kicad (mounting holes 130 x 90)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YJ4eAB6zjQT49RVwpgfKdt
---
 03-Architecture-Hardware/kicad              |  2 +-
 scripts/2026-09-25_v6_T16_mounting_holes.py | 79 +++++++++++++++++++++
 2 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 scripts/2026-09-25_v6_T16_mounting_holes.py

diff --git a/03-Architecture-Hardware/kicad b/03-Architecture-Hardware/kicad
index fdffd44..61652cc 160000
--- a/03-Architecture-Hardware/kicad
+++ b/03-Architecture-Hardware/kicad
@@ -1 +1 @@
-Subproject commit fdffd441d48a60d02cfbae93ecaae2246808e663
+Subproject commit 61652ccc3f92403e89a01f0ba88660caeaed6be3
diff --git a/scripts/2026-09-25_v6_T16_mounting_holes.py b/scripts/2026-09-25_v6_T16_mounting_holes.py
new file mode 100644
index 0000000..37d2ef8
--- /dev/null
+++ b/scripts/2026-09-25_v6_T16_mounting_holes.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+"""v6 T16 — square up the 4 mounting holes and give them unique references.
+
+Found 25-Sep: the board (140 x 100 mm, Edge.Cuts x 60.19–200.19, y 40.32–140.32) had
+  MH5 (65.2, 45.3)   MH6 (65.2, 135.3)   <- west pair, same position since v4/v5 (proven)
+  MH6 (195.5, 45.0)  MH6 (195.5, 135.5)  <- east pair off by 0.3 / 0.2 / 0.5 mm
+so the pattern was 130.3 x 90.0 on the west and 90.5 on the east, and three holes shared "MH6".
+
+Fix: keep the proven west pair and mirror it -> a clean 130.0 x 90.0 mm rectangle, every hole
+~5.0 mm from its two edges, centred on the board:
+  MH5 (65.2, 45.3)   MH6 (65.2, 135.3)   MH7 (195.2, 45.3)   MH8 (195.2, 135.3)
+
+Only the footprint (at …) line and the Reference value change; the holes keep their UUIDs.
+
+    python3 T16.py hbox-watchdog-v6.kicad_pcb            # dry run
+    python3 T16.py hbox-watchdog-v6.kicad_pcb --apply    # writes .T16bak
+"""
+import re, sys, shutil
+
+TARGET = [  # (current ref, current x, y) -> (new ref, x, y)
+    (('MH5', 65.2, 45.3),   ('MH5', 65.2, 45.3)),
+    (('MH6', 65.2, 135.3),  ('MH6', 65.2, 135.3)),
+    (('MH6', 195.5, 45.0),  ('MH7', 195.2, 45.3)),
+    (('MH6', 195.5, 135.5), ('MH8', 195.2, 135.3)),
+]
+
+def span(s, i):
+    d = 0; instr = False; j = i
+    while True:
+        c = s[j]
+        if c == '"' and s[j-1] != '\\': instr = not instr
+        elif not instr:
+            if c == '(': d += 1
+            elif c == ')':
+                d -= 1
+                if d == 0: return j + 1
+        j += 1
+
+def holes(s):
+    out = []
+    for m in re.finditer(r'\n\t\(footprint "MountingHole:[^"]*"', s):
+        a = m.start() + 1; e = span(s, a); b = s[a:e]
+        at = re.search(r'\n\t\t\(at (-?[\d.]+) (-?[\d.]+)([^)]*)\)', b)
+        ref = re.search(r'\(property "Reference" "([^"]*)"', b).group(1)
+        out.append(dict(a=a, e=e, ref=ref, x=float(at.group(1)), y=float(at.group(2)), rot=at.group(3)))
+    return out
+
+def main():
+    path = sys.argv[1]; apply = '--apply' in sys.argv
+    s0 = open(path).read(); s = s0; ch = []
+    hs = holes(s0)
+    assert len(hs) == 4, f'expected 4 mounting holes, found {len(hs)}'
+    edits = []
+    for (r0, x0, y0), (r1, x1, y1) in TARGET:
+        h = [h for h in hs if abs(h['x'] - x1) < 1e-3 and abs(h['y'] - y1) < 1e-3 and h['ref'] == r1]
+        if h: continue  # already in place
+        h = [h for h in hs if abs(h['x'] - x0) < 1e-3 and abs(h['y'] - y0) < 1e-3 and h['ref'] == r0]
+        if len(h) != 1: raise SystemExit(f'cannot identify hole {r0} at ({x0},{y0})')
+        edits.append((h[0], r1, x1, y1))
+    for h, r1, x1, y1 in sorted(edits, key=lambda t: -t[0]['a']):
+        b = s[h['a']:h['e']]
+        b = re.sub(r'\n\t\t\(at (-?[\d.]+) (-?[\d.]+)([^)]*)\)', f'\n\t\t(at {x1:g} {y1:g}{h["rot"]})', b, count=1)
+        b = b.replace(f'(property "Reference" "{h["ref"]}"', f'(property "Reference" "{r1}"', 1)
+        s = s[:h['a']] + b + s[h['e']:]
+        ch.append(f'{h["ref"]} ({h["x"]:g},{h["y"]:g}) -> {r1} ({x1:g},{y1:g})')
+    hs1 = holes(s)
+    refs = [h['ref'] for h in hs1]
+    assert sorted(refs) == ['MH5', 'MH6', 'MH7', 'MH8'], refs
+    xs = sorted({h['x'] for h in hs1}); ys = sorted({h['y'] for h in hs1})
+    assert len(xs) == 2 and len(ys) == 2, 'holes not on a rectangle'
+    print('\n'.join(ch) or 'nothing to do (already applied)')
+    print(f'pattern {xs[1]-xs[0]:.2f} x {ys[1]-ys[0]:.2f} mm')
+    if ch and apply:
+        shutil.copy2(path, path + '.T16bak'); open(path, 'w').write(s); print('APPLIED (backup .T16bak)')
+    elif ch:
+        print('DRY RUN — re-run with --apply')
+
+if __name__ == '__main__':
+    main()