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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
1
00:00:00,000 --> 00:00:01,700
John caught what Grok missed.

2
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.

3
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.

4
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Solved, it peaked at 62 A/mm².

5
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.

6
00:00:28,420 --> 00:00:29,400
It drops to 29.

7
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The back is now one solid ground plane.

8
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Then Grok walks through every pour on its
own screen: ground, the switch node, on
top only, the 5 V output on top,

9
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and the small output island that feeds J4
from the back.

10
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DRC is clean, and Grok still lists what
got worse: the input track and the hottest
spot each rose a little.