Grok Bot

{
 "video": "/adom/grok-bridge/render/first-ai-pcb/clips/07-sw-and-pours.mp4",
 "title": "Clip 7: the switch node John caught",
 "poster": "/adom/grok-bridge/render/first-ai-pcb/clips/07-sw-and-pours.jpg",
 "chapters": [
  {
   "t": 0,
   "title": "John's catch"
  },
  {
   "t": 16.7,
   "title": "62 A/mm\u00b2"
  },
  {
   "t": 22.1,
   "title": "The fix"
  },
  {
   "t": 33.5,
   "title": "The pours"
  },
  {
   "t": 45.3,
   "title": "What got worse"
  }
 ],
 "captions": "WEBVTT\n\n00:00:00.000 --> 00:00:01.700\nJohn caught what Grok missed.\n\n00:00:01.820 --> 00:00:09.000\nLooking at the board, he saw that the\nswitch node, the copper between the\nTPS54202 and the inductor, was a skinny\ntrack carrying the full inductor current.\n\n00:00:09.150 --> 00:00:16.600\nGrok had never loaded that net in its\nFields spec, so it was never solved, and\nGrok never flagged it.\n\n00:00:16.750 --> 00:00:21.900\nSolved, it peaked at 62 A/mm\u00b2.\n\n00:00:22.090 --> 00:00:28.300\nOnce prompted, Grok moved the inductor\nright beside U1, and turned the switch\nnode into a short, wide pour.\n\n00:00:28.420 --> 00:00:29.400\nIt drops to 29.\n\n00:00:29.520 --> 00:00:33.300\nThe back is now one solid ground plane.\n\n00:00:33.490 --> 00:00:41.700\nThen Grok walks through every pour on its\nown screen: ground, the switch node, on\ntop only, the 5 V output on top,\n\n00:00:41.830 --> 00:00:45.200\nand the small output island that feeds J4\nfrom the back.\n\n00:00:45.340 --> 00:00:52.460\nDRC is clean, and Grok still lists what\ngot worse: the input track and the hottest\nspot each rose a little.\n"
}