PCB adapter design: JLCPCB Samtec CLM-110-02-H-D (C3320770) to 2.54mm 1×10 header (Raspberry Pi SPI breakout)

Description:

I need a simple 2-layer PCB adapter designed and delivered as manufacturing files for JLCPCB.

Goal

Create a PCB that breaks out a 20-pin (2×10) 1.00mm pitch module connector to a 2.54mm 1×10 header for Dupont wires (Raspberry Pi wiring).
One side of the board is the Samtec connector, the opposite side is the 2.54mm header.

Board

2-layer FR-4

Board outline: 25 mm × 50 mm (around this value)

Place connectors on opposite short edges

Add clear silkscreen pin labels and a Pin-1 marker

Required Connector Parts (NO substitutions)

J1 (module connector):

Samtec CLM-110-02-H-D

JLCPCB Part # = C3320770 (must be used in BOM)

J2 (wire header):

1×10, 2.54mm male header (for Dupont wires)

Must be a specific part suitable for JLCPCB ordering (include Manufacturer + MPN in BOM)

Pin Mapping (must match exactly)

J2 pinout (silkscreen these labels):

3V3

GND

SCLK

MOSI

MISO

CS

DRDY

RST

EXT

NC (no connection)

J1 pin functions (must be wired exactly as listed):

J1-1 = SCLK

J1-2 = MISO

J1-3 = GND

J1-4 = GND

J1-5 = MOSI

J1-6 = CS

J1-7 = NC

J1-8 = GND

J1-9 = NC

J1-10 = 3V3

J1-11 = 3V3

J1-12 = 3V3

J1-13 = DRDY

J1-14 = EXT

J1-15 = GND

J1-16 = RST

J1-17..20 = NC (do not connect)

Required Passives (must be included)

R1–R4: 33Ω, 0603 series resistors on SCLK/MOSI/MISO/CS

R5: 10kΩ, 0603 pull-up from RST to 3V3

C1: 100nF, 0603 decoupling (3V3–GND)

C2: 10µF, 0805 decoupling (3V3–GND)

C1 and C2 must be placed close to J1 3V3/GND pins with short traces.

Required Net Connections

3V3: J2-1 ↔ J1-10/11/12 + C1/C2

GND: J2-2 ↔ J1-3/4/8/15 + C1/C2

SCLK: J2-3 → R1 → J1-1

MOSI: J2-4 → R2 → J1-5

MISO: J1-2 → R3 → J2-5

CS: J2-6 → R4 → J1-6

DRDY: J2-7 ↔ J1-13

RST: J2-8 ↔ J1-16 (R5 pull-up to 3V3)

EXT: J2-9 ↔ J1-14

J2-10 = NC (no copper)

DRC / Quality Requirements

All nets routed (Airwires = 0)

No DRC errors

J1 Pin-1 marker must match electrical pin 1 (SCLK)

Deliverables (JLCPCB-ready)

Gerber + Drill (ZIP)

BOM (CSV) including Designator, Value, Package, Manufacturer, MPN, and JLCPCB Part # for J1 = C3320770

Pick & Place / CPL (centroid)

Source project files (KiCad preferred, or Altium/Eagle)


Project budget - around 50-90 USD