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Fixes the GC/USB power led handover

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This commit is contained in:
Dennis Brentjes
2026-09-02 21:34:17 +02:00
parent ddb33b6a2c
commit c0c123e88b
5 changed files with 64 additions and 45 deletions
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hardware/re-bba-rb/TODO.md
+16 -18
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@@ -143,24 +143,22 @@ Cosmetic/mechanical items for the in-progress V2 rework (EEPROM→93LC56B,
reverse-mount LEDs, J3 slot already done). These are PCB-layout tasks, not
schematic changes.
- [ ] **1. Add the project name in silkscreen.** Put a "re-bba-rb" (or chosen
project name/version) label on the board silkscreen so the assembled board
is identifiable. Pick a copper-free spot; watch the JLC 1.0 mm min text
height / 0.15 mm min line-width floor (same rule that just caught the LED
refdes). Consider adding a small rev tag (e.g. "v2") next to it.
- [ ] **2. Extend the board out to the ethernet socket so it sits flush with the
GC.** Lengthen the board outline (Edge.Cuts) toward the RJ45/magjack (J2)
end so the finished board reaches flush with the GameCube's shell instead
of stopping short. Mechanical-only (move the board edge + any ground pour
to suit); keep the SP1/J3 edge geometry fixed. Verify the new outline
against the GC slot depth before ordering.
- [ ] **3. Add back-side silkscreen legends for the LEDs.** Label what each LED
means on **B.SilkS** (the back is the viewing side — reverse-mount LEDs
emit through the board, top faces into the GC slot). Map from the current
build: LEDG/D6 = heartbeat, LEDR/D7 = EXI activity, RGB D11 = rx / D12 =
tx / D13 = ready, D8/D9 = USB/GC power handover indicators. Confirm the
final per-LED meaning against `synth.py` + BRINGUP.md before lettering, and
mind the same silk text-height/width floor as item 1.
- [x] **1. Add the project name in silkscreen — DONE 2026-08-28** (commit
"Added Silkscreen labels"). "ReBBArb V2" (2 mm) on B.SilkS, mid-board.
Free-floating over some copper (silk_over_copper warning, JLC clips it) —
reposition to taste if wanted.
- [ ] ~~**2. Extend the board to the ethernet socket for a flush GC fit.**~~
**DROPPED 2026-08-28** — Dennis decided against extending the outline;
board ships at its current length.
- [x] **3. Back-side silkscreen LED legends — DONE 2026-08-28** (same commit).
On B.SilkS (mirrored): RX (D11) / TX (D12) / RDY (D13) / HB (D6, heartbeat)
/ EXI (D7) as vertical labels above the LED-window row; USB (D9) / GC (D8)
above the two power LEDs. Semantics confirmed against `synth.py`.
D8/D9 = GC/USB assignment **confirmed** (TPS2116 ST low when VIN1 not used,
VIN1 = GC priority) and the handover indicator **circuit fixed** 2026-08-28
(R5 10k→5.1k, R39/R40 10k→33k — see BRINGUP #2 / REVIEW.md), so the labels
are correct and the indicator is now clean one-hot. "ReBBArb V2" name
position confirmed fine by Dennis.
## Critical — ALL RESOLVED (schematic + PCB, verified 2026-07-18)