2 layers26.4 × 62 mm
4 layers145 × 57 mm
X1-expander
jwise/x1-expander50Expander board for Bambu Lab X1 Carbon
- Size
- 145 × 57 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 150
- Nets
- 131
- Pads
- 595
- Tracks, vias
- 1,444, 442
- Pours
- 21
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 May 2024
- Updated
- 24 Jan 2026
Overview
X1-expander is an open-source printed circuit board by jwise, from the jwise/x1-expander repository on GitHub. It is a 4-layer board of 145 × 57 mm with 150 parts on 131 nets, routed with 1,444 tracks and 442 vias.
It is built around the RP2040, SY8205FCC and LAN9514-JZX, with the AT93C66B-SSHM-T, HC-JN254-2-08-W and KT-0603R among its other parts. Its parts include 63 capacitors, 33 resistors, 13 diodes, 7 ICs and 2 inductors. It belongs with the RP2040 boards of this library.
Main components
12
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
SY8205FCC
SOIC-8-EP-40℃~+85℃@(TA) 1 200uA 4.5V~30V 500kHz 5A Adjustable Buck Buck Built-in Yes SOIC-8-EP DC-DC Converters ROHS矽力杰silergyDC-DC Converters
LAN9514-JZX
QFN-64-EP(9x9)0℃~+70℃ 1.8V、3.3V 480Mbps Hub USB 2.0 QFN-64-EP(9x9) USB HUB Controllers ROHSMicrochip TechnologyUSB Converters
AT93C66B-SSHM-T
SOIC-8-40℃~+85℃ 1,000,000 cycles 1.7V~5.5V 100 Years 2MHz 4Kbit 5ms Built-in write enable latch (WEL) SPI SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM
HC-JN254-2-08-W
弯插,P=2.54mm-40℃~+105℃ 2 2.54mm 2.54mm 2x8P 3A 8 Brass Gold IDC Header Right Angle Push-Pull,P=2.54mm IDC Connectors ROHSHCTLIDC Connectors
KT-0603R
0603-40℃~+85℃ 1.6mm x 0.8mm square LED 1.8V~2.4V 120° 20mA 300mcd 40mW 615nm~630nm 645nm Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSHubei KENTO ElecLED Indication - Discrete
USB-226-BRW
插件-20℃~+70℃ 1 1.5A 19.4mm 30V 4P Female Type-A USB 2.0 Vertical, Flag White 插件 USB Connectors ROHSXUNPUUSB Connectors
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
BSMD1206-110-30V
1206-40℃~+85℃ 1.1A 1W 2.2A 270mΩ 300ms 30V 40A 40mΩ 1206 Resettable Fuses ROHSBHFUSEResettable Fuses
DZ254W-11-04-65
弯插,P=2.54mm1 1x4P 2.54mm 2.54mm 3A 4P 6mm Black Brass Gold Pin Header Right Angle 弯插,P=2.54mm Pin Headers ROHSDEALONPin Headers
HC-1.25-12PWT
SMD,P=1.25mm,卧贴-40℃~+105℃ 1 1.25mm 12 125V 12P 1A 1x12P 20.05mm 3.57mm 5.25mm Auxiliary Solder Pin Brass LCP PicoBlade(MX 1.25) Surface Mount, Right Angle Tin UL94V-0 SMD,P=1.25mm,Surface Mount，Right Angle Wire To Board Connector ROHSHCTLWire To Board Connector
S4B-PH-KL(LF)(SN)
弯插,P=2mm-25℃~+85℃ 1 100V 1x4P 2A 2mm 4 4.8mm 4P 7.6mm 9.9mm Copper alloy Gray K Pin PA66 PH Right Angle Tin UL94V-0 弯插,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector
README
README.mdX1Plus Expander
This repository contains hardware development files for the X1Plus Expander, available-ish for purchase at Crowd Supply. Printer-side software to interface with these boards lives in the X1Plus repository.
If you have just purchased an Expander, you probably want to read the getting started guide!
Each part has its own directory in this repository. Part numbers always begin with "X1P", are followed by three digits to identify the part, and have a three-character revision number: a letter to identify form/fit/function-incompatible revisions, and two digits to identify FFF-compatible revisions. Put together, a part and revision number looks like "X1P-002-C02", to identify the an X1Plus Expansion Board mainboard, the third FFF-incompatible revision, and the second FFF-compatible revision of the X1P-002-C family.
This repository contains the following parts. (Descriptions below may not be representative of marketing names.)
- X1P-001: wiring harness to connect X1P-002 to the printer
- X1P-002: X1Plus Expander mainboard
- X1P-003: manufacturing test harness for X1P-002
- X1P-004: LED strip 3.3V->5V level shifter plugin
- X1P-005: Andon board plugin
- X1P-006: 2.5mm camera shutter release plugin
- X1P-100 is a part number reserved for a bundle assembly of X1P-001, X1P-002, and X1P-800.
- X1P-800: plastics for X1P-002
Ideally, each known version of each of these parts has its own git tag and GitHub release with manufacturing data. (Ideally.)
Also in this repository:
Parts
150| Qty | Value | Footprint | References |
|---|---|---|---|
| 31 | 100nF X7R | Capacitor_SMD:C_0402_1005Metric | C12, C13, C14, C15, C16, C17, C18, C21, C22, C23, C24, C25, C26, C27, C28, C33 +15 |
| 10 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C5, C29, C31, C32, C54, C61, C62, C63 |
| 10 | SRV05-4.TCT_C2687126 | x1-expander:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 |
| 5 | 100k | Resistor_SMD:R_0402_1005Metric | R1, R2, R22, R23, R39 |
| 4 | 0 | Resistor_SMD:R_0603_1608Metric | R21, R26, R27, R30 |
| 4 | 22uF 6.3V | Capacitor_SMD:C_0603_1608Metric | C52, C57, C58, C60 |
| 4 | GCM32EC71H106KA03L | Capacitor_SMD:C_1210_3225Metric | C42, C43, C44, C51 |
| 4 | HC-JN254-2-08-W | x1-expander:HDR-TH_16P-P2.54-H-F-R2-C8-W9.0 | ACBUS1, ADBUS1, BCBUS1, BDBUS1 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R10, R12, R34 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R15, R16, R24 |
| 3 | 22uF 6.3V X7R | Capacitor_SMD:C_1210_3225Metric | C8, C47, C50 |
| 3 | 330 | Resistor_SMD:R_0603_1608Metric | R8, R9, R13 |
| 3 | KT-0603R | x1-expander:LED0603-RD | LED1, LED2, LED3 |
| 2 | 100µF | Capacitor_SMD:C_1210_3225Metric | C45, C46 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C20, C30 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R6, R36 |
| 2 | 27.4 | Resistor_SMD:R_0402_1005Metric | R14, R17 |
| 2 | 27pF C0G | Capacitor_SMD:C_0402_1005Metric | C9, C10 |
| 2 | 2A/0.05DCR | Inductor_SMD:L_0603_1608Metric | FB1, FB2 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R19, R20 |
| 2 | AP22615AWU-7 | x1-expander:SOT-26_L3.0-W1.6-P0.95-LS2.8-BL | U3, U7 |
| 2 | SY8205FCC | x1-expander:SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL-EP2.0 | U4, U6 |
| 2 | USB-226-BRW | x1-expander:USB-A-TH_USB-226-BRW | USB1, USB2 |
| 1 | 10 1/16W 1% | Resistor_SMD:R_0402_1005Metric | R25 |
| 1 | 10µF 35V | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 12.4k 1% | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 12k 1% | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 13.7k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 22.1k | Resistor_SMD:R_0402_1005Metric | R35 |
| 1 | 220pF NP0 | Capacitor_SMD:C_0402_1005Metric | C59 |
| 1 | 22nF X7R | Capacitor_SMD:C_0603_1608Metric | C19 |
| 1 | 25MHz | x1-expander:OSC-SMD_4P-L3.2-W2.5-BL | X1 |
| 1 | 3.3uH 2.8A | Inductor_SMD:L_Sunlord_MWSA0402S | L2 |
| 1 | 3.74k | Resistor_SMD:R_0402_1005Metric | R38 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 470pF NP0 | Capacitor_SMD:C_0402_1005Metric | C49 |
| 1 | 4x 49.9 | x1-expander:RES-ARRAY-SMD_0402-8P-L2.0-W1.0-BL | RN1 |
| 1 | 5.6k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 6.8k | Resistor_SMD:R_0402_1005Metric | R37 |
| 1 | 6.8uH 6A | x1-expander:IND-SMD_L7.2-W6.6_GPSR07X0 | L1 |
| 1 | 820 | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AT93C66B-SSHM-T | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | BSMD1206-110-30V | x1-expander:F1206 | F1 |
| 1 | DZ254W-11-04-65 | x1-expander:HDR-TH_4P-P2.54-H-M-W10.3 | UART1 |
| 1 | HC-1.25-12PWT | x1-expander:CONN-SMD_12P-P1.25_HCTL_HC-1.25-12PWT | AP_HARNESS1 |
| 1 | HC913550A-M899-A | easyeda2kicad:RJ45-TH_HC913550A-M899-A | LAN1 |
| 1 | LAN9514 | x1-expander:QFN64G-0.5-9X9MM | U1 |
| 1 | LOGO | x1-expander:accelerated-hat | G*** |
| 1 | LOGO | x1-expander:emarhavil | G*** |
| 1 | LOGO | x1-expander:x1plus | G*** |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | S4B-PH-KL(LF)(SN) | x1-expander:CONN-TH_S4B-PH-KL-LF-SN | I2C1 |
| 1 | TC2050-IDC-NL | Connector:Tag-Connect_TC2050-IDC-NL_2x05_P1.27mm_Vertical_with_bottom_clip | J1 |
The 146 most common of 150 parts.
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Questions
How big is the X1-expander PCB?
It measures 145 × 57 mm and has 4 copper layers, 1.6 mm thick.
What parts does the X1-expander use?
150 parts, built around the RP2040, SY8205FCC, LAN9514-JZX and AT93C66B-SSHM-T. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the X1-expander KiCad files?
From the jwise/x1-expander repository on GitHub, at the commit this page was made from: the board is x1p-002/x1-expander.kicad_pcb and its schematic x1p-002/2_LAN.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the X1-expander design in my own project?
Its repository states no licence, so its author keeps all rights: ask jwise before reusing the design.