I’ll diagnose whether the blank pages come from the PDF renderer or malformed layout geometry, then generate a fallback PDF from a verified visible board rendering. I will not modify the PCB.
Thought for 3 mins 29 sec
17 hrs
Referenced guidance.
1/3 Inspect board geometry and native PDF export failure
Inspect board geometry and native PDF export failure
Generate a fallback PDF containing the visible PCB layout
Open and verify the fallback PDF before delivery
Thought for 26 sec — Exploring PDF generation options
Thought for 11 sec
Awaiting 1 background task
Received notification from "Blank PCB PDF Fix" that it finished — picking the work back up.
The fallback-export executor has completed. I’m retrieving its artifact and verification report now, then I’ll independently confirm the PDF contains visible board content before sending it.
The native exporter produced 11 blank pages despite valid PCB geometry. I generated a one-page fallback from the board outline, top copper, and top silkscreen layers and verified that it contains visible layout content.
The installed Raytac MDBT50Q-1MV2 is the chip/ceramic-antenna variant. The complete 61-pin module pinout has no RF/ANT output pin, so the requested Johanson 2450AT18A100E and external matching network are incompatible and were intentionally not added.
Raytac MDBT50Q-1MV2 Version L requires the module antenna end to face a host-PCB edge. Keep a minimum 10.5 mm × 3.8 mm antenna region free of copper, ground pours, traces, vias, batteries, shields, and other metal on every PCB layer. Raytac further recommends making the no-ground region as wide as possible. The user-proposed 3 mm keepout is smaller than Raytac's dimensioned 3.8 mm depth and is not sufficient.
For the existing 3.3 V supply (below 3.6 V), Raytac's Reg0-disabled reference configuration ties VDD, VDDH, and DCCH to 3V3. All module ground pins 1, 2, 15, 33, and 55 are connected to GND. C17 (100 nF) and C18 (10 uF) provide local module decoupling/bulk capacitance. VBUS and USB data are unused.
GPIO map implemented
Table
U2 pin
Net / destination
P0.02/AIN0
VBAT_SENSE, midpoint of R13/R14 10k/10k divider from U1 STO (SUPERCAP) to GND
P0.03/AIN1
Existing ADE_IRQ0_N to U7 #IRQ0
P0.13
ADXL355_INT1 to U6 INT1
P0.16
SENSOR_EN to Q1 gate, with R18 100k pull-up to 3V3
P0.19
Existing SPI_SCK to U7 and U6
P0.20
Existing SPI_MOSI to U7 and U6
P0.22
Existing SPI_MISO to U7 and U6
P0.24
ADXL355_CS to U6 CS
P0.26
I2C_SDA to U3/U4/U5, with sole bus pull-up R15 4.7k to 3V3
P0.27
I2C_SCL to U3/U4/U5, with sole bus pull-up R16 4.7k to 3V3
P0.28/AIN4
Existing ADE_SPI_CS_N to U7 #SS
P0.30/AIN6
SPARE_ADC, intentionally available as a labeled one-pin net
P0.31/AIN7
LED_GREEN_DRIVE through R17 330 ohm to LED1 anode; LED1 cathode to GND, so GPIO-high lights LED
TC2030-MCP-NL mapping
J3 is an exact TC2030-MCP-NL target footprint created from the official drawing: six 0.787 mm contact pads on a 1.27 mm grid, three 0.991 mm non-plated alignment holes, and no solder paste on contact pads. The official MCP cable signals were adapted to nRF52840 SWD as follows:
Table
J3 contact
Official MCP signal
Board connection
1
MCLR/VPP
RESET_N / U2 P0.18-nRESET
2
VDD
3V3 target reference
3
GND
GND
4
PGD/ICSPDAT
SWDIO
5
PGC/ICSPCLK
SWDCLK
6
LVP/NC
Intentionally no-connect
The TC2030 footprint requires no tracks/vias in its shaded keepout, at least 0.508 mm clearance from contact pads, and no solder-paste apertures over the contacts.
Components added
J3 — TC2030-MCP-NL
R13, R14 — 10k, 0603, VBAT divider
R15, R16 — 4.7k, 0402, sole I2C pull-ups
R17 — 330 ohm, 0402, LED current limiting
R18 — 100k, 0402, Q1 gate default-off pull-up
C17 — 100 nF, 0402, U2 local decoupling
C18 — 10 uF, 0805, U2 local bulk capacitance
Validation and known findings
Connectivity inspection confirms every requested GPIO reaches the intended destination above, every U2 GND is on GND, and VDD/VDDH/DCCH are on 3V3. The scope-specific ERC has two intentional residual findings:
U2 VBUS missing power — VBUS is intentionally unused in Raytac's non-USB, sub-3.6 V reference configuration and is marked no-connect; the library symbol declares it as a power input, so ERC still reports it.
SPARE_ADC single-pin net — intentional per requirement; no existing connector or test point was present, so only the net label was added.
New support symbols were auto-placed by the available schematic mutation tool, but a dedicated schematic-arrangement mutation was unavailable in this session; final visual regrouping near U2 remains a schematic-legibility follow-up. New parts also remain unplaced on the PCB because this task was schematic-only.