diff --git a/03-Architecture-Hardware/2026-09-02_Drogheda_v6-Copper-Plan_Placement-EMC-Guide.html b/03-Architecture-Hardware/2026-09-02_Drogheda_v6-Copper-Plan_Placement-EMC-Guide.html index a1e937c..04311c9 100644 --- a/03-Architecture-Hardware/2026-09-02_Drogheda_v6-Copper-Plan_Placement-EMC-Guide.html +++ b/03-Architecture-Hardware/2026-09-02_Drogheda_v6-Copper-Plan_Placement-EMC-Guide.html @@ -63,7 +63,7 @@ a{color:var(--plane)}
Placement companion for the 140 × 100 re-layout — every capacitor's owner, what clusters together, and the EMC order of work. Cap ownership below is computed from the board netlist, not from memory.
-ba70f62), and the sync re-nets P18/R126/C157 to a clean /NTC2. Tick “delete footprints with no symbol” in that dialog.b007c7c): P-refs now follow function order — P1 24V · P2 5V bench · P3 battery (was P4) · P4 fan (was P6) · P5 cutoff (was P11) · P6 reset (was P10) · P7 NTC probe 1 (was P12) · P8 NTC probe 2 (was P18) · P9 panel LED (was P8) · P10 RGB (was P14) · P11 RS485 (was P15) · P12 RS232 (was P16). ⚠ v5 field docs say "P12 = NTC" — in v6 that name is the RS232 port; update harness docs. The NTC2 net fix is applied and synced.L2/D2 (under U19's new outline), L6/DB2/DB3/Q2/Dbk1 near U25, C40, R40/R41 at Y3. Drag those few aside first and the board is clean./SW_BAT ≥ 2 mm polygon, /BAT_PLUS ≥ 1.5 mm — the blackout path, a hard v6 requirement/SW_BAT ≥ 2 mm polygon, /BAT_PLUS ≥ 1.5 mm — the blackout path, a hard v6 requirementU11/U12, Y1, C90–C103): one block, U11 close to J10 (magnetics are inside the HR911105A), crystal + 18 pF at the pins, the 3V3_ETH locals (C92–C94, C98, C102, C103) around U11. Keep the RJ45 pair region free of other routes.U15): C85–C88 are charge-pump flying caps — they carry the pump current, so they sit hard against U15; C84 100 nF at its supply pin. P16 at the edge.U15): C85–C88 are charge-pump flying caps — they carry the pump current, so they sit hard against U15; C84 100 nF at its supply pin. P12 (RS232 jack) at the edge.U10, Y2, C82/C83): crystal caps at the pins, block near the MCU.U2, Cbst1, Ccomp1, C23): a third switcher — treat like §4's loop, and park it in the noisy quarter near the power entry, away from GNSS.U26, C158/C159 at VDD/VDDIO, C160 bulk): ≤ 10 mm from a mounting hole, on stiff board — it should feel the chassis, not board flex.Cu3 Cu4 C80 C81 C89 C105+…): every 100 nF on 3V3 pairs with one IC's power pin — when you move an IC, its 100 nF moves with it. C118 22 µF is the 3V3 bulk at the regulator.R42+C24, R126+C157) at the MCU; P12/P18 jacks at the harness edge.R42+C24 → P7, R126+C157 → P8) at the MCU; P7/P8 jacks at the harness edge.EinarBoard HBOX v6 · Helgen · updated 03-Sep-2026 to the clustered layout (commits ba70f62 · c7d2552).
EinarBoard HBOX v6 · Helgen · updated 03-Sep-2026: clustered layout + connector renumber (c7d2552 · 43a967b · b007c7c).