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A small daughter board carrying the three FujiNet status LEDs (WiFi, Bluetooth, SIO) for the FN32ROV-XEBook-KiCad main board, which mounts the FujiNet FN32ROV WiFi/SIO adapter permanently inside an XEBook laptop build.
On the main board, the LEDs and buttons were moved off-PCB onto JST pigtails so they can
be panel-mounted separately (see that project's CLAUDE.md, "External LED board
interface (J_LED1)"). This board is that panel-mounted LED daughter board.
JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical), mounted on the back of the board and
hand-soldered. An earlier revision used an SMD connector specifically to avoid THT
pads plating through to the light-pipe side, but assembling both sides of the board
turned out to be too costly for JLCPCB assembly — hand-soldering a THT part is cheaper.
Since a THT part's copper unavoidably lands on both faces, J1 is instead offset well
clear of the LED row in Y (the board's height was grown from 10mm to 14mm specifically
to make room for this), so its pads don't land under a light pipe. Mates via a JST PH
pigtail to J_LED1 on the main board, pin-for-pin (1=3V3, 2=LED_WIFI, 3=LED_BT,
4=LED_SIO).Current-limiting resistors are not on this board — they live on the main board (R13/R14/R15) since this board only ever sees the LED forward voltage drop.
MountingHole_2.2mm_M2), 4mm in from each end, at y = 7mm
(the board's vertical center) — 4mm below the LED row.Work in progress — schematic captured and footprints/nets placed on the PCB (ERC clean, DRC clean, schematic/PCB parity clean). Not yet routed — the user routes copper by hand in the KiCad GUI. Not yet fabricated.
Built with KiCad 9. kicad-cli sch erc / kicad-cli pcb drc --schematic-parity are used
to verify the design as it's built.
CERN Open Hardware Licence Version 2 - Strongly Reciprocal (CERN-OHL-S-2.0), matching the main board.
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