board
OCuLink Riser for the Supermicro AIOM Slot
Public Unreviewedby John Lauer
Passive OCP NIC 3.0 SFF card that breaks a Supermicro AIOM slot's PCIe x16 into four OCuLink 4i ports (4 x4, Gen4): 6-layer, 85 ohm, length-matched, DRC-clean KiCad project with Gerbers, BOM and CPL.
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clips/README.md+12@@ -12,6 +12,7 @@ The whole build, filmed off the screen while Claude worked in Adom Hydrogen, cut | [6. The board opens in KiCad](#6-the-board-opens-in-kicad) | 3:59 to 4:45 | Last routing fixes, the real board in KiCad, parts staged for placement | | [7. Placement and the routing gate](#7-placement-and-the-routing-gate) | 4:46 to 5:33 | 47 parts landed live one at a time, the routing gate, tracks landing | | [8. Routing lands live](#8-routing-lands-live) | 5:33 to 6:19 | 169 traces landed one at a time in KiCad, all accepted |+| [9. Pours, outline and the current check](#9-pours-outline-and-the-current-check) | 6:20 to 7:06 | Routing done, pours landed and measured, the field-solved current check | ## 1. The request and the research @@ -106,3 +107,14 @@ The whole build, filmed off the screen while Claude worked in Adom Hydrogen, cut - The low-speed nets fill in on the left of the board: scan chain, resets, power-good and the LED. The high-speed lanes were already in place. - Each trace is checked against the design rules before it lands. - 169 traces land, every one accepted, in about 70 minutes of real time.++## 9. Pours, outline and the current check++<video controls preload="metadata" width="1080" poster="clips/clip-09-poster.jpg" src="clips/clip-09.mp4"></video>++[Download clip 9](clips/clip-09.mp4) (2 min 53 s, 16x, narrated)++- The last traces land; every net is connected on the real board. The design calculations (impedance, skew, timing) go into the run as evidence.+- Heatsink vias: none needed, nothing on this passive card dissipates real power. The pours land and the filled copper is measured on all six layers.+- The outline corners were already rounded by the generator.+- The current check needs a real field solve of the board's copper, so adom-fields runs on the saved board. Early answers are refused (a stale report, current injected at every pad) until the spec carries the real +12 V path from the edge fingers to the loads.
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