Network cabinet fan controller

@@ -35,7 +35,7 @@ The original cabinet mechanical sources were not changed. Earlier two-layer and  ## Design limits and open checks -- Provisional regulated input 11.4–12.6 V; combined fan load 2 A continuous and logic load 0.6 A at 3.3 V. Confirm the exact Noctua suffix: industrialPPC variants differ.+- Provisional regulated input 11.4–12.6 V; combined fan load 2 A continuous and logic load 0.6 A at 3.3 V. Selected fans: two ARCTIC P14 Max units, listed at 12 V and 0.35 A each (0.70 A combined running current). The existing 1 A per-fan design allowance is retained; startup/stall current remains a bench check. - The 4 A fuse requires starting-current/I²t and available-fault-current qualification. The TVS clamps transients; it does not make an incorrect supply voltage safe for a fan. - Copper routing is complete. Native KiCad DRC reports zero violations and zero unconnected items; schematic ERC reports zero violations, and all 28 named nets match the intended circuit. Current/thermal screens use explicit load currents. Physical thermal and transient qualification remains required. - Power-stage simulation is a prescribed-duty periodic ripple screen. It does not model AP63203 compensation, startup, current limiting or load-step response.@@ -50,7 +50,7 @@ The finer 0.1 mm thermal screen for the final copper candidate found regional ri  ## Package contents -Open `fan-controller.kicad_pro` in KiCad 10. Version 0.1.1 is the native KiCad 10 save; the earlier 0.1.0 archive retains the KiCad 9 file. The project carries its symbols, footprints and models. `manufacturing/` contains the native checked files and JLC-formatted BOM/CPL. `docs/fan-controller-development.pdf` is the three-page review document. `docs/field-issues-review.md` records unresolved advisory findings. `firmware/` contains the ESPHome configuration and control-policy source; supply your own private credentials.+Open `fan-controller.kicad_pro` in KiCad 10. Version 0.1.2 documents the confirmed ARCTIC P14 Max fan model; the PCB is the unchanged native KiCad 10 save from 0.1.1; the earlier 0.1.0 archive retains the KiCad 9 file. The project carries its symbols, footprints and models. `manufacturing/` contains the native checked files and JLC-formatted BOM/CPL. `docs/fan-controller-development.pdf` is the three-page review document. `docs/field-issues-review.md` records unresolved advisory findings. `firmware/` contains the ESPHome configuration and control-policy source; supply your own private credentials.  ## Review drawings @@ -71,3 +71,5 @@ This 42-second silent review shows the assembled model, nominal enclosure fit, c ::adom-video{src="/matt/fan-controller/render/videos/review.video.json"}  [Download the review video](/matt/fan-controller/render/videos/fan-controller-review.mp4) · [Download the complete development package](/matt/fan-controller/render/downloads/fan-controller-development.zip)++Fan reference: [ARCTIC P14 Max specification, page 2](https://www.arctic.de/media/8a/18/01/1710507321/Spec_Sheet_P14_Max_EN.pdf). Listed speed is 400–2800 RPM, with stop below 3% PWM. The proposed 35% minimum control command stays above that threshold. The firmware’s two-pulses-per-revolution scaling remains an assumption to verify against an optical tachometer; this specification does not state pulse count.

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@@ -0,0 +1,27 @@+{+  "model": "ARCTIC P14 Max",+  "quantity": 2,+  "source": "https://www.arctic.de/media/8a/18/01/1710507321/Spec_Sheet_P14_Max_EN.pdf",+  "verified_specifications": {+    "voltage_V": 12,+    "listed_current_A_each": 0.35,+    "listed_current_A_pair": 0.7,+    "speed_RPM": [+      400,+      2800+    ],+    "stop_below_PWM_percent": 3,+    "connector": "4-pin PWM: 1 GND, 2 +12V, 3 tach, 4 PWM",+    "operating_ambient_C": [+      0,+      40+    ]+  },+  "assessment": "Listed running load fits the unchanged 1 A/channel design allowance. No PCB, BOM, Gerber or firmware logic change.",+  "remaining": [+    "Startup/stall current and fuse coordination",+    "Actual plugged-in connector height and cable clearance",+    "Tach pulses per revolution (firmware assumes two)",+    "Reset/unpowered PWM behavior and physical thermal/fault qualification"+  ]+}

⋯ 1 unchanged line ⋯

@@ -3,7 +3,7 @@   "type": "component",   "title": "Network cabinet fan-controller",   "brief": "Development PCB for two network-cabinet fans: local temperature control, independent PWM and RPM monitoring, and a nominal fit in the existing round enclosure.",-  "version": "0.1.1",+  "version": "0.1.2",   "visibility": "private",   "kind": "board",   "source": "kicad",

@@ -4,20 +4,25 @@   "type": "component",   "title": "Network cabinet fan-controller",   "brief": "Development PCB for two network-cabinet fans: local temperature control, independent PWM and RPM monitoring, and a nominal fit in the existing round enclosure.",-  "version": "0.1.1",+  "version": "0.1.2",   "visibility": "private",   "kind": "board",   "source": "kicad",   "hero": {     "type": "billboard",     "headline": "Network cabinet fan-controller",-    "subhead": "Rev A development \u2022 dual PWM \u2022 temperature and RPM monitoring"+    "subhead": "Rev A development • dual PWM • temperature and RPM monitoring"   },   "author": {     "name": "matt",     "email": "[email protected]"   },-  "tags": [],+  "tags": [+    "pcb",+    "fan-controller",+    "kicad",+    "network-cabinet"+  ],   "license": "proprietary",   "sample_prompts": [],   "discovery_triggers": [],@@ -44,5 +49,13 @@     "readme",     "viewers",     "files"-  ]-}+  ],+  "description": "Development PCB for two network-cabinet fans: local temperature control, independent PWM and RPM monitoring, and a nominal fit in the existing round enclosure.",+  "files": [+    "README.md",+    "docs/",+    "models/",+    "downloads/"+  ],+  "dependencies": {}+}\ No newline at end of file