2 layers291.8 × 134.6 mm
2 layers115.8 × 82.5 mm
Spica is a 38-keys keyboard inspired by the Gemini Keyboard layout by zk-phi(@zk-phi). It was named by Sumiso(@kutsuhimo3).
- Size
- 115.8 × 82.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 72
- Nets
- 77
- Pads
- 479
- Tracks, vias
- 1,858, 175
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Dec 2023
- Updated
- 20 Dec 2023
Overview
Spica is an open-source printed circuit board by illness072, from the illness072/Spica-PCB repository on GitHub. It is a 2-layer board of 115.8 × 82.5 mm with 72 parts on 77 nets, routed with 1,858 tracks and 175 vias.
It is built around the RP2040, W25Q128JVSIQ and TLV75733PDBV, with the SK6812MINI-E and 1N4148W among its other parts. Its parts include 20 inductors, 19 switches, 15 capacitors, 7 resistors and 4 connectors. It belongs with the RP2040 boards of this library.
Main components
5
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
TLV75733PDBV
SOT-23-5-40℃~+125℃@(Tj) 1 1A 3.3V 40uA 46dB@(100kHz) 5.5V 650mV@(1A) 71.5uVrms Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Soft Start SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
README
README.mdSpica PCB
PCB Data for Spica Keyboard
Spica is a 38-keys keyboard inspired by the Gemini Keyboard layout by zk-phi(@zk-phi). It was named by Sumiso(@kutsuhimo3).
-
Gemini Keyboard by @zk-phi
-
Case Data
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | SK6812MINI-E | spica:SK6812MINI-E_Rev | L1, L2, L3, L4, L5, L10, L11, L12, L13, L14, L15, L16, L17, L18, L19, L20 +4 |
| 17 | SW_Push | spica:MX_1.00u-reversible | SW1, SW2, SW3, SW4, SW5, SW7, SW8, SW10, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19 +1 |
| 10 | 100n | spica:C_0402_1005Metric | C4, C5, C7, C8, C9, C10, C11, C12, C13, C14 |
| 3 | 2.2u | spica:C_0402_1005Metric | C3, C6, C15 |
| 2 | 1k | spica:R_0402_1005Metric | R1, R3 |
| 2 | 1u | spica:C_0402_1005Metric | C1, C2 |
| 2 | 27 | spica:R_0402_1005Metric | R4, R5 |
| 2 | 5.1k | spica:R_0402_1005Metric | R6, R7 |
| 2 | Conn_01x04_Female | spica:PinSocket_1x04_P2.54mm_Vertical | J2, J3 |
| 1 | 10k | spica:R_0402_1005Metric | R2 |
| 1 | 12MHz | spica:Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | Y1 |
| 1 | 1N4148W | spica:D_SOD-123 | D1 |
| 1 | AudioJack4 | spica:MJ-4PP-9_cross | J4 |
| 1 | RP2040 | spica:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | SW_BOOT | spica:SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | BSW1 |
| 1 | SW_Push | spica:MX_1.50u-reversible | SW11 |
| 1 | SW_Push | spica:MX_1.25u-reversible | SW6 |
| 1 | SW_RESET | spica:SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | RSW1 |
| 1 | TLV75733PDBV | spica:SOT-23-5 | U1 |
| 1 | USB_C_Receptacle | spica:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q128JVS | spica:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U3 |
Questions
How big is the Spica PCB?
It measures 115.8 × 82.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Spica use?
72 parts, built around the RP2040, W25Q128JVSIQ, TLV75733PDBV and SK6812MINI-E. 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 Spica KiCad files?
From the illness072/Spica-PCB repository on GitHub, at the commit this page was made from: the board is spica.kicad_pcb and its schematic spica.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Spica design in my own project?
Its repository states no licence, so its author keeps all rights: ask illness072 before reusing the design.
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