2 layers343.7 × 135.1 mm
LzIron RP2040
Keyboard-PCB-Replica-Project/lzIron_RP2040
이 기판은 MX 버전이며, ISO 엔터 및 Alps를 지원하지 않습니다!
237 parts1
2 layers31.3 × 67 mm
RPBoard²
euvalennn/rpboard-squared9Simple RP2350-based devboard
- Size
- 31.3 × 67 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 63
- Nets
- 65
- Pads
- 288
- Tracks, vias
- 962, 133
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Jul 2025
- Updated
- 14 Jun 2026
Overview
RPBoard² is an open-source printed circuit board by euvalennn, from the euvalennn/rpboard-squared repository on GitHub. It is a 2-layer board of 31.3 × 67 mm with 63 parts on 65 nets, routed with 962 tracks and 133 vias.
It is built around the W25Q128JVSIQ, TP4056-42-ESOP8 and 1N5819WS, with the ABM8-272-T3, AO3401A and SK6812MINI-HS among its other parts. Its parts include 23 capacitors, 13 resistors, 8 connectors, 4 ICs and 3 diodes. It belongs with the microcontroller boards boards and the RP2350 boards of this library.
Main components
6
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
TP4056-42-ESOP8
ESOP-8-40℃~+85℃ 1 1A 2uA 4.2V 4V~8V Charging IC Lithium Battery Support ESOP-8 Battery Management ROHSTOPPOWERBattery Management
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
SK6812MINI-HS
SMD-4P,3.7x3.5mm-40℃~+85℃ 0.6mA 1.95mm 100ns 100ns 120° 160mcd~320mcd 1kHz 2000V 200mcd~385mcd 3.5mm 3.7V~5.5V 3.7mm 465nm~475nm 500ns 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit、Built-in one-way transmission function Semi-transparent lens SMD-4P,3.7x3.5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
README
README.mdRPBoard²
RPBoard² is a simple RP2350-based board with multiple convenient features built-in. It's my first "actual" PCB project (I only did a hackpad before)
Motivation
I wanted to build a devboard to learn more about actual PCB design and electronics, instead of using pre-made boards. I considered it as a personal challenge and ended up learning a lot on the two weeks it took me to make it :D
Features:
- RP2350A MCU
- JST Debug header
- Built-in lithium battery support
- microSD card reader
- On-board RGB LED on GPIO25 (neopixel)
- QWIIC / Stemma QT I2C connector
- USB-C connector
- 16MB flash memory
Built project:
| Front | Back |
|---|---|
 |  |
PCB and schematic:
Schematic:
PCB:
| PCB editor | 3D viewer |
|---|---|
 |  |
Both the PCB and the schematic were designed using KiCad. The PCB is a 2-layer board with a ground pour on both layers.
BOM:
| Name | Description | Quantity | LCSC Part # | Total price |
|---|---|---|---|---|
| CL05A106MP5NUNC | 10V 10uF X5R ±20% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS | 4 | C315248 | $0.1640 |
| CGA0402X7R104K160GT | 16V 100nF X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS | 13 | C6119799 | $0.0342 |
| CL05A475MP5NRNC | 10V 4.7uF X5R ±20% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS | 4 | C23733 | $0.0384 |
| CC0402JRNPO9BN150 | 50V 15pF NP0 ±5% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS | 2 | C106997 | $0.0220 |
| XL-1608SURC-06 | 20mA 225mcd Water Clear op View Mount 620nm~630nm Red 120° 50mW 2.3V 0603 LED Indication - Discrete ROHS | 1 | C965799 | $0.0620 |
| SK6812MINI-HS | SMD,3.5x3.7mm RGB LEDs(Built-in IC) ROHS | 1 | C2922787 | $0.4665 |
| 1N5819WS | 40V 600mV@1A 1A SOD-323 Schottky Diodes ROHS | 1 | C191023 | $0.0192 |
| TYPE-C-31-M-12 | 5A 1 16P Female Type-C SMD USB Connectors ROHS | 1 | C165948 | $0.3394 |
| BM03B-SRSS-TB(LF)(SN) | 1x3P 3P SH Tin 3 -25℃~+85℃ 1A 1 1mm Copper Alloy Surface Mount,Vertical SMD,P=1mm Wire To Board Connector ROHS | 1 | C160389 | $1.1070 |
| S2B-PH-SM4-TB(LF)(SN) | 1x2P 2P PH Tin 2 -25℃~+85℃ 2A 1 2mm Copper Alloy Surface Mount, Right Angle SMD,P=2mm,Surface Mount,Right Angle Wire To Board Connector ROHS | 1 | C295747 | $0.9295 |
| TF-01A | 1.85mm Connector and Ejector MicroSD Card (TF Card) Push-Push SMD SD Card / Memory Card Connector ROHS | 1 | C91145 | $0.3372 |
| BM04B-SRSS-TB(LF)(SN) | 1x4P 4P SH Tin 4 -25℃~+85℃ 1A 1 1mm Copper Alloy Surface Mount,Vertical SMD,P=1mm Wire To Board Connector ROHS | 1 | C160390 | $0.9105 |
| AOTA-B201610S3R3-101-T | 0806 Power Inductors ROHS | 1 | C42411119 | $1.3680 |
| AO3401A | 30V 4.2A 120mΩ@2.5V 1.4W 1.3V@250uA 1 P-Channel SOT-23 MOSFETs ROHS | 1 | C347476 | $0.2990 |
| 0402WGF5101TCE | 62.5mW Thick Film Resistor 50V ±100ppm/℃ ±1% 5.1kΩ 0402 Chip Resistor - Surface Mount ROHS | 3 | C25905 | $0.0030 |
| 0402WGF1002TCE | 62.5mW Thick Film Resistor 50V ±100ppm/℃ ±1% 10kΩ 0402 Chip Resistor - Surface Mount ROHS | 3 | C25744 | $0.0030 |
| 0402WGF330JTCE | 62.5mW Thick Film Resistor 50V ±100ppm/℃ ±1% 33Ω 0402 Chip Resistor - Surface Mount ROHS | 1 | C25105 | $0.0010 |
| RC0402FR-0727RL | 62.5mW Thick Film Resistor 50V ±100ppm/℃ ±1% 27Ω 0402 Chip Resistor - Surface Mount ROHS | 2 | C138021 | $0.0120 |
| FRC0402J102 TS | 62.5mW Thick Film Resistor 50V ±100ppm/℃ ±5% 1kΩ 0402 Chip Resistor - Surface Mount ROHS | 4 | C2906899 | $0.0080 |
| TS-1088-AR02016 | Without Bracket 50mA 4mm 100,000 Cycles 12V 1.6N 3mm 2mm Round Button Surface Mount,Vertical SPST SMD Tactile Switches ROHS | 2 | C720477 | $0.1692 |
| RP2350A | QFN-60-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHS | 1 | C42411118 | $2.1330 |
| NCP1117ST33T3G | 62dB@(120Hz) 1A Fixed 3.3V Positive 20V SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS | 1 | C26537 | $0.5098 |
| W25Q128JVSIQ | 128Mbit SPI 133MHz SOIC-8-208mil NOR FLASH ROHS | 1 | C97521 | $1.9590 |
| TP4056-42-ESOP8 | 4V~8V Lithium-ion/Polymer 1 1A ESOP-8 Battery Management ROHS | 1 | C16581 | $0.3438 |
| ABM8-272-T3 | SMD3225-4P Crystals ROHS | 1 | C20625731 | $2.1000 |
| PCB Price | JLCPCB | 5 | N/A | $2.00 |
| Economic PCBA setup fee | JLCPCB | N/A | N/A | $8.00 |
| PCBA stencil | JLCPCB | N/A | N/A | $1.50 |
| Extended components fee | JLCPCB | N/A | N/A | $51.00 |
| SMT assembly | JLCPCB | N/A | N/A | $1.13 |
| Special components fee | JLCPCB | N/A | N/A | $0.06 |
| Nitrogen reflow soldering | JLCPCB | N/A | N/A | $0.82 |
| Shipping to Argentina (cheapest) | DHL Express (FedEx appears to be cheaper on cart page but adds an additional remote area surcharge at checkout, DHL ends up being the cheapest option) | N/A | N/A | $33.33 |
| Subtotal | N/A | N/A | N/A | $111.18 |
| Total after $80 JLCPCB coupon | N/A | N/A | N/A | $31.18 |
Although DHL shipping is expensive, it's the cheapest option for Argentina. FedEx has a cheaper price in the cart page, but after checking out it adds a $50+ remote area surcharge.
Special thanks:
Thanks to Hack Club and the highway organizing team for all their efforts to make this possible. I would have never thought I'd be capable of something like this, yet highway gave me the motivation I needed to actually learn and design, and the funding to make it real.
Parts
63| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100n | Capacitor_SMD:C_0402_1005Metric | C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C17, C18, C23 |
| 4 | 10u | Capacitor_SMD:C_0402_1005Metric | C1, C2, C21, C22 |
| 4 | 1k | Resistor_SMD:R_0402_1005Metric | R6, R7, R8, R9 |
| 4 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C3, C4, C5, C16 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R11, R12, R13 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C19, C20 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | Conn_01x17 | Connector_PinHeader_2.54mm:PinHeader_1x17_P2.54mm_Vertical | J6, J9 |
| 2 | SW_Push | TS-1088-ARXXX:TS-1088-ARXXX | SW1, SW2 |
| 1 | 1N5819WS | Diode_SMD:D_SOD-323 | D3 |
| 1 | 3.3u | RP2350A:L_pol_2016 | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 5.1k | Resistor_SMD:R_0402_1005Metric | R10 |
| 1 | ABM8-272-T3 | ABM8-272-T3:XTAL_ABM8-272-T3 | Y1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J3 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J8 |
| 1 | JST I2C | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J5 |
| 1 | JST SWD | Connector_JST:JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical | J2 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LOGO | Silkscreen:orpheus-pf | G*** |
| 1 | LOGO | Silkscreen:heidi-highway-car | G*** |
| 1 | LOGO | Silkscreen:hack-club-2025 | G*** |
| 1 | Micro_SD_Card | TF-01A:TF-01A | J4 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | RP2350_60QFN | Package_DFN_QFN:QFN-60-1EP_7x7mm_P0.4mm_EP3.4x3.4mm | U1 |
| 1 | SK6812MINI-HS | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D2 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U4 |
| 1 | USB_C_Receptacle_USB2.0_16P | TYPE-C-31-M-12:TYPE-C-31-M-12 | J1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
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Questions
How big is the RPBoard² PCB?
It measures 31.3 × 67 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RPBoard² use?
63 parts, built around the W25Q128JVSIQ, TP4056-42-ESOP8, 1N5819WS and ABM8-272-T3. 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 RPBoard² KiCad files?
From the euvalennn/rpboard-squared repository on GitHub, at the commit this page was made from: the board is pcb/RPBoard².kicad_pcb and its schematic pcb/RPBoard².kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RPBoard² design in my own project?
Its repository states no licence, so its author keeps all rights: ask euvalennn before reusing the design.