2 layers100 × 100 mm
2 layers
Paperkb
imaspacecat/paperkb- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 168
- Nets
- 123
- Pads
- 509
- Tracks, vias
- 214, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Oct 2026
- Updated
- 15 Oct 2026
Overview
Paperkb is an open-source printed circuit board by imaspacecat, from the imaspacecat/paperkb repository on GitHub. It is a 2-layer board with 168 parts on 123 nets, routed with 214 tracks and 0 vias.
It is built around the RP2040, W25Q128JVSIQ and AP2112K-3.3, with the AO3400A among its other parts. Its parts include 66 switches, 64 diodes, 17 capacitors, 13 resistors and 3 ICs. It belongs with the RP2040 boards of this library.
Main components
4
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
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
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.md65% lp kb with display
Parts
168| Qty | Value | Footprint | References |
|---|---|---|---|
| 64 | D | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +48 |
| 64 | KS33_SW_solder | PCM_marbastlib-xp-gateron_lp:SW_KS33_1u | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +48 |
| 11 | 100nF | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C17 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R4, R10, R11 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C15, C16 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | 30pF | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW65, SW66 |
| 1 | 10 | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | Conn_01x12 | FallCTF:FPC-SMD_AFC01-S12FCA-00 | J2 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
Questions
What parts does the Paperkb use?
168 parts, built around the RP2040, W25Q128JVSIQ, AP2112K-3.3 and AO3400A. 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 Paperkb KiCad files?
From the imaspacecat/paperkb repository on GitHub, at the commit this page was made from: the board is paperkb.kicad_pcb and its schematic paperkb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Paperkb design in my own project?
Its repository states no licence, so its author keeps all rights: ask imaspacecat before reusing the design.
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