2 layers85 × 120 mm
2 layers229.5 × 81.2 mm
- Size
- 229.5 × 81.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 180
- Nets
- 149
- Pads
- 782
- Tracks, vias
- 1,251, 168
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Sep 2025
- Updated
- 23 Sep 2025
Overview
Lb47 is an open-source printed circuit board by wappon, from the wappon/mykeyboards repository on GitHub. It is a 2-layer board of 229.5 × 81.2 mm with 180 parts on 149 nets, routed with 1,251 tracks and 168 vias.
It is built around the RP2040, W25Q32JVSSIQ and LP2985-33DBV. Its parts include 95 diodes, 49 switches, 17 capacitors, 8 resistors and 3 ICs. It belongs with the RP2040 boards of this library.
Main components
3
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q32JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 133MHz 1uA 2.7V~3.6V 20 Years 32Mbit 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
LP2985-33DBV
SOT-23-5-40℃~+125℃@(Tj) 1 150mA 16V 3.3V 30uVrms 45dB@(1kHz) 575mV@(150mA) 850uA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control、Noise bypass terminal Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdwappon
e-mail:hetiantamo@gmail.com
Parts
180| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | D | Diode_SMD:D_SOD-523 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 47 | SW_Push | isw-kbd-lib-mod:CherryMX_Hotswap_1u | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +31 |
| 47 | YS-SK6812MINI-E | kbd-lib-mod:YS-SK6812MINI-E | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +31 |
| 10 | 0.1μF | Capacitor_SMD:C_0402_1005Metric | C4, C10, C11, C12, C13, C14, C15, C16, C17, C18 |
| 3 | 1μF | Capacitor_SMD:C_0402_1005Metric | C5, C8, C9 |
| 2 | 10kΩ | Resistor_SMD:R_0402_1005Metric | R5, R8 |
| 2 | 22Ω | Resistor_SMD:R_0402_1005Metric | R6, R7 |
| 2 | 27pF | Capacitor_SMD:C_0402_1005Metric | C6, C7 |
| 2 | 5.1kΩ | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | SW_Push | myparts_rp2040:TSA017A2530B_C2888436 | SW48, SW49 |
| 1 | 10μF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 1kΩ | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 4.7μF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 470Ω | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | LP2985-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q32JVSSIQ | Package_SON:WSON-8-1EP_8x6mm_P1.27mm_EP3.4x4.3mm | U2 |
The 174 most common of 180 parts.
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Questions
How big is the Lb47 PCB?
It measures 229.5 × 81.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Lb47 use?
180 parts, built around the RP2040, W25Q32JVSSIQ and LP2985-33DBV. 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 Lb47 KiCad files?
From the wappon/mykeyboards repository on GitHub, at the commit this page was made from: the board is lb47/kicad/lb47.kicad_pcb and its schematic lb47/kicad/lb47.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lb47 design in my own project?
Its repository states no licence, so its author keeps all rights: ask wappon before reusing the design.