12 V to 5 V / 1 A Buck Molecule (TPS54202)

@@ -36,15 +36,19 @@ Three and a half minutes, start to finish: the prompt in Adom Hydrogen, the circ  ## Molecule interface -The molecule has its own page with the KiCad project, STEP and anchored GLB: [john/buck-12v5v-1a-molecule](https://wiki.adom.inc/john/buck-12v5v-1a-molecule).--| contact | net | | contact | net |-|---|---|---|---|---|-| J1 | VIN | | J4 | VOUT |-| J2 | GND | | J5 | GND |-| J3 | EN (pull low to switch off) | | J6 | VMON = VOUT / 2 |--Probe pads: TP1 SW, TP2 FB, TP3 VOUT, TP4 GND. The four corner machine pins are GND.+28 x 20 mm, 2 layers. Positions are in mm from MP1. The molecule's GLB, STEP, footprint and symbol JSON are in `molecule/`; the KiCad 10 project is in `kicad/`.++| contact | position | net | notes |+|---|---|---|---|+| J1 | (0, 12) | VIN | 9 to 16 V, 12 V nominal; UVLO starts at 8.58 V, stops at 6.87 V |+| J2 | (0, 8) | GND | input return |+| J3 | (0, 4) | EN | open drain low turns it off; released, the UVLO divider decides |+| J4 | (24, 12) | VOUT | 4.98 V, 1 A |+| J5 | (24, 8) | GND | output and signal ground |+| J6 | (24, 4) | VMON | VOUT / 2 (2.49 V) for a 3.3 V ADC, 5 k source |+| MP1 to MP4 | (0, 0), (24, 0), (0, 16), (24, 16) | GND | medium machine pins |++Probe pads: TP1 SW (15.6, 4.9), TP2 FB (9.4, 5.6), TP3 VOUT (21.6, 4.9), TP4 GND (15.6, 2.8).  ## Feature guides 

@@ -61,7 +61,7 @@ Probe the ripple with the shortest ground you can. A long ground lead picks up t  ## What is not confirmed yet -- **Both molecules are in the Hydrogen library.** The buck is `john/buck-12v5v-1a-molecule` v1, imported from its wiki page (the page's anchored GLB, footprint and sources). No LrgMed scaffold existed as a molecule, so `john/Scaffold LrgMed 64x64` v1 was made from the wiki's scaffold model, re-anchored at its front-left large pin. Open `scaffold/buck-probe-layout.json` in the Hydrogen 3D Editor to let it snap the stacking height (the file uses 8.4 mm per level, taken from the reference drone layout) and route the wires. (From an Adom container, point `adom-molecule` at `ADOM_HYDROGEN_URL=https://hydrogen.adom.inc`; the container's local proxy does not serve the molecule routes.)+- **Both molecules are in the Hydrogen library.** The buck is `john/buck-12v5v-molecule` v1, imported from its wiki page (the page's anchored GLB, footprint and sources). No LrgMed scaffold existed as a molecule, so `john/Scaffold LrgMed 64x64` v1 was made from the wiki's scaffold model, re-anchored at its front-left large pin. Open `scaffold/buck-probe-layout.json` in the Hydrogen 3D Editor to let it snap the stacking height (the file uses 8.4 mm per level, taken from the reference drone layout) and route the wires. (From an Adom container, point `adom-molecule` at `ADOM_HYDROGEN_URL=https://hydrogen.adom.inc`; the container's local proxy does not serve the molecule routes.) - **The control panel's position in the preview is approximate.** The editor places the panel itself; the wires name panel contacts, not coordinates. - **Nothing has been built.** The probe plan is what the first powered board will be checked against. 

@@ -24,7 +24,16 @@     "name": "John Lauer",     "email": "[email protected]"   },-  "tags": [],+  "tags": [+    "molecule",+    "power",+    "buck",+    "dc-dc",+    "tps54202",+    "5v",+    "kicad",+    "adom-aiflow"+  ],   "license": "proprietary",   "sample_prompts": [],   "discovery_triggers": [],@@ -33,11 +42,11 @@   "created_at": "2026-09-29T02:10:31.838Z",   "updated_at": "2026-09-29T02:10:31.838Z",   "component": {-    "mpn": "BUCK-12V5V-MOLECULE",-    "manufacturer": "",-    "package": "",+    "mpn": "Buck 12V to 5V 1A Molecule",+    "manufacturer": "Adom",+    "package": "molecule 28 x 20 mm, medium pins",     "pin_count": null,-    "category": "",+    "category": "power",     "subcategory": "",     "body_size": null,     "parts": {@@ -45,5 +54,23 @@       "step": "molecule/buck-12v5v-molecule.step"     },     "distributor_links": {}+  },+  "dependencies": {+    "adom/machinecontactmedium": "*",+    "adom/cr0402-fx-1002glf": "*",+    "adom/machinepinmediumshort": "*",+    "adom/tps54202ddcr": "*",+    "adom/in-s63btg": "*",+    "adom/0603b104j500ct": "*",+    "adom/cr0402-fx-5601glf": "*",+    "adom/cr0402-fx-1004glf": "*",+    "adom/cr0402-fx-6802glf": "*",+    "john/amplh5030s-150mt": "*",+    "john/cc1206kkx7r8bb106": "*",+    "adom/cr0402-fx-2201glf": "*",+    "adom/cr0402-fx-1503glf": "*",+    "adom/cl21a226mpqnnne": "*",+    "adom/0402n680j500ct": "*",+    "john/eee-fk1v470p": "*"   }-}+}\ No newline at end of file

@@ -42,7 +42,7 @@    }   },   "Buck 12V-5V 1A": {-   "sku": "john/buck-12v5v-1a-molecule/v5",+   "sku": "john/buck-12v5v-molecule/v5",    "name": "Buck 12V-5V 1A",    "position": {     "x": 260,