Grok Bot - first-ai-pcb/clips/07-sw-and-pours.vtt

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John Lauer First AI PCB with Grok: clip 7, the switch node John caught, and the pour walkthrough 45d0f5b 5d ago

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WEBVTT

00:00:00.000 --> 00:00:01.700
John caught what Grok missed.

00:00:01.820 --> 00:00:09.000
Looking at the board, he saw that the
switch node, the copper between the
TPS54202 and the inductor, was a skinny
track carrying the full inductor current.

00:00:09.150 --> 00:00:16.600
Grok had never loaded that net in its
Fields spec, so it was never solved, and
Grok never flagged it.

00:00:16.750 --> 00:00:21.900
Solved, it peaked at 62 A/mm².

00:00:22.090 --> 00:00:28.300
Once prompted, Grok moved the inductor
right beside U1, and turned the switch
node into a short, wide pour.

00:00:28.420 --> 00:00:29.400
It drops to 29.

00:00:29.520 --> 00:00:33.300
The back is now one solid ground plane.

00:00:33.490 --> 00:00:41.700
Then Grok walks through every pour on its
own screen: ground, the switch node, on
top only, the 5 V output on top,

00:00:41.830 --> 00:00:45.200
and the small output island that feeds J4
from the back.

00:00:45.340 --> 00:00:52.460
DRC is clean, and Grok still lists what
got worse: the input track and the hottest
spot each rose a little.