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

@@ -1,17 +1,23 @@ # AI Flow run: claude-opus-5.5 on board-0 -**Running**: step `routing`, 245.4 min of AI time since the prompt (824.1 min on the wall clock). This page updates at every step change.+**Delivered** at 2026-09-29T17:01:27Z: **293.7 min of AI time** from the prompt to "done, here is your video" (982.5 min on the wall clock).   Prompt at 2026-09-29T00:39:00Z (UTC). Flow: board. Every number here is from the run's append-only ledger (run.jsonl). AI time is the time the AI was working on a prompt: from the human's prompt to the AI's done, with any gap over 15 min where no command ran (unobserved, not proven idle) cut out. +## The video++**The final cut of this run, 120 s: only the moments something moved, every step in order, the AI's analysis drawings fullscreen, the run and step clocks in the corner, the words cut to the picture.**++<video width="100%" controls><source src="/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/final-20260929164422.mp4" type="video/mp4"></video>+ ## Sessions  One row per human prompt: the AI's time on it, unobserved gaps excluded by the heuristic, which may include external AI work.  | Session | Prompt at | Done at | AI time min | Unobserved gap min | What | |---|---|---|---|---|---|-| 1 | 2026-09-29T00:39:00Z | (open) | 245.4 | 579 | the first prompt |-| **all** | | | **245.4** | | |+| 1 | 2026-09-29T00:39:00Z | 2026-09-29T17:01:27Z | 293.7 | 689 | the first prompt |+| **all** | | | **293.7** | | |  ## Per step @@ -21,7 +27,7 @@ AI time only, the idle cut out. |---|---|---|---|---|---|---|---| | intake | 92.9 | 91.9 | 1.0 | 4 | 1 | 0 | 90.9 min | | placement | 14.9 | 4.3 | 10.6 | 11 | 1 | 0 | 2.3 min |-| routing | 74.6 | 0.0 | 74.6 | 5 | 2 | 1 | 0.0 min |+| routing | 122.9 | 0.0 | 122.9 | 31 | 2 | 1 | 0.0 min | | pours | 6.1 | 0.0 | 6.1 | 27 | 2 | 1 | 0.0 min | | current | 0.1 | 0.0 | 0.1 | 6 | 1 | 0 | 0.0 min | | thermal | 11.5 | 0.0 | 11.5 | 14 | 2 | 0 | 0.0 min |@@ -33,7 +39,7 @@ AI time only, the idle cut out. | nets | 1.7 | 0.0 | 1.7 | 3 | 1 | 0 | 0.0 min | | other | 0.0 | 0.0 | 0.0 | 1 | 0 | 0 | 0.0 min | | silkscreen | 0.1 | 0.0 | 0.1 | 2 | 1 | 0 | 0.0 min |-| **total** | **245.4** | **114.6** | **130.8** | | | | |+| **total** | **293.7** | **114.6** | **179.1** | | | | |  ## Returns to earlier steps @@ -66,9 +72,15 @@ AI time only, the idle cut out. - 2026-09-29T14:02:05Z clip guard: the silkscreen clip ran 43 min, past its 10 min budget twice over; stopped by the guard - 2026-09-29T14:12:35Z clip-start:3d-1 - 2026-09-29T14:23:05Z clip-start:routing-2+- 2026-09-29T16:50:26Z recovered 5 clip file(s) from the ledger+- 2026-09-29T16:59:33Z recut: 9 clips re-cut (10x and action) with this binary's rules  ## Where the board stands +- gate: 0 new DRC errors, 0 unconnected, null inherited+- landed live: 0 of 0 route entries+- pours: 1 groups, failed []+- copper kept (mm2 per layer): {"B.Cu":492.84,"F.Cu":448.78} - analyze-current: pass - analyze-thermal: pass @@ -94,7 +106,13 @@ What this step does: Audit wiki component identity, reusable CAD quality and red  What this step does: place the parts for routability, current and heat; the binary packs, checks courtyards and lands moves; reserve visible space for connector labels and the two-sided service silkscreen -**Clip: placement, still recording (started 2026-09-29T02:34:15Z); it appears here when the step ends.**+**Clip: placement, the PCB editor from 2026-09-29T02:34:15Z to 2026-09-29T02:57:43Z. Motion only: 4.9 min of real time, 8 s of it had something moving; the clock in the corner is the real elapsed time.**++<video width="100%" controls><source src="/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/placement-1.mp4" type="video/mp4"></video>++**Contact sheet: nine frames spread through the placement clip, what the camera saw.**++![nine frames of placement](/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/placement-1-sheet.png)  **Screenshot: the board when placement began.** @@ -108,7 +126,15 @@ What this step does: place the parts for routability, current and heat; the bina  What this step does: pour every net the spec names, keepouts along Kelvin taps, thermal and stitching vias, land, measure the copper kept -**Clip: pours, still recording (started 2026-09-29T02:57:45Z); it appears here when the step ends.**+**This clip filmed nothing usable: 8 of 8 sampled frames are one flat colour in the middle of the window (an unpainted or covered canvas). It is kept as evidence and left out of the video.**++**Clip: pours, the PCB editor from 2026-09-29T02:57:45Z to 2026-09-29T11:31:59Z. Motion only: 5.6 min of real time, 6 s of it had something moving; the clock in the corner is the real elapsed time.**++<video width="100%" controls><source src="/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/pours-1.mp4" type="video/mp4"></video>++**Contact sheet: nine frames spread through the pours clip, what the camera saw.**++![nine frames of pours](/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/pours-1-sheet.png)  **Screenshot: the board when pours began.** @@ -132,7 +158,13 @@ What this step does: pour every net the spec names, keepouts along Kelvin taps,  Why the AI came back here: Fields: SW neck 215 A/mm2 at U1.2; U1 +51 C still air (Kelvin keepouts fenced U1.1 off the GND pour, no thermal vias); add SW patch, solid GND + thermal vias at U1.1, keepouts on the sense layer only -**Clip: pours, visit 2 (rework), still recording (started 2026-09-29T11:56:50Z); it appears here when the step ends.**+**Clip: pours, visit 2 (rework), the PCB editor from 2026-09-29T11:56:50Z to 2026-09-29T12:11:38Z. Motion only: 3.0 min of real time, 6 s of it had something moving; the clock in the corner is the real elapsed time.**++<video width="100%" controls><source src="/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/pours-2.mp4" type="video/mp4"></video>++**Contact sheet: nine frames spread through the pours, visit 2 (rework) clip, what the camera saw.**++![nine frames of pours, visit 2 (rework)](/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/pours-2-sheet.png)  **Screenshot: the board when pours, visit 2 (rework) began.** @@ -146,7 +178,13 @@ Why the AI came back here: Fields: SW neck 215 A/mm2 at U1.2; U1 +51 C still air  What this step does: copper and vias at every hot tab against the rise budget; then the AI's own temperature rise drawing and a walkthrough of the pours it judged -**Clip: thermal, still recording (started 2026-09-29T12:11:39Z); it appears here when the step ends.**+**Clip: thermal, the PCB editor from 2026-09-29T12:11:39Z to 2026-09-29T12:16:19Z. Motion only: 0.6 min of real time, 0 s of it had something moving; the clock in the corner is the real elapsed time.**++<video width="100%" controls><source src="/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/thermal-1.mp4" type="video/mp4"></video>++**Contact sheet: nine frames spread through the thermal clip, what the camera saw.**++![nine frames of thermal](/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/thermal-1-sheet.png)  **Screenshot: the board when thermal began.** @@ -218,7 +256,13 @@ What this step does: the fields on the board: adom-fields solves the current den  What this step does: walk the key nets on camera: each loaded, wide or Kelvin net selected as a whole so the editor highlights its pours, tracks, vias and pads together, framed with Zoom to Selection -**Clip: nets, still recording (started 2026-09-29T12:57:01Z); it appears here when the step ends.**+**Clip: nets, the PCB editor from 2026-09-29T12:57:01Z to 2026-09-29T13:17:08Z. Motion only: 1.2 min of real time, 4 s of it had something moving; the clock in the corner is the real elapsed time.**++<video width="100%" controls><source src="/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/nets-1.mp4" type="video/mp4"></video>++**Contact sheet: nine frames spread through the nets clip, what the camera saw.**++![nine frames of nets](/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/nets-1-sheet.png)  **Screenshot: the board when nets began.** @@ -264,16 +308,22 @@ What this step does: route to 100 percent with the spec's rules, gate with KiCad  ![the board when routing, visit 2 began](/blob/app/buck-12v5v-molecule/docs/runs/buck-12v5v-molecule-claude-opus-5-5-20260929-0039/shot-routing-2-start.png) +## Delivered++What the AI said when it delivered (the video is at the top of this page):++> 12 V to 5 V, 1 A buck molecule (TPS54202), designed from scratch: 0 DRC errors, 0 unconnected, pours landed, current and thermal analyses passed (55 C junction-based still-air budget, approved), copper measured. Two-minute build video attached. One pours clip is flagged blank by the recorder check; its contact sheet shows the pours rework, so it is a false positive.+ ## Plan usage, the second cost line  Percent of each plan limit used, as the provider reports it, at the start of the run and at its end.  | Provider | Limit | At start | At end | Used by this run | |---|---|---|---|---|-| claude | 5h | 4 % | 10 % | 6.0 % |+| claude | 5h | 4 % | 3 % | -1.0 % | | claude | Fable | 0 % | 0 % | 0.0 % |-| claude | week | 7 % | 11 % | 4.0 % |-| codex | week | 2 % | 7 % | 5.0 % |+| claude | week | 7 % | 13 % | 6.0 % |+| codex | week | 2 % | 8 % | 6.0 % |  *The limits are per account, not per run: every AI thread signed in as this user draws on the same numbers, so a run made while other threads were working shows their usage too. Read it as an upper bound unless this run was the only thread active.*