2 layers158 × 104 mm
Slab pcb left
headblockhead/slab-pcb
The circuitboard and schematics for the Slab Keyboard system.
128 parts1CERN-OHL-S-2.0
2 layers175.6 × 104 mm
Interchange pcb right
headblockhead/slab-pcb1The circuitboard and schematics for the Slab Keyboard system.
- Size
- 175.6 × 104 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 178
- Nets
- 94
- Pads
- 685
- Tracks, vias
- 1,725, 203
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 25 May 2024
- Updated
- 22 Jun 2026
Overview
Interchange pcb right is an open-source printed circuit board by headblockhead, from the headblockhead/slab-pcb repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 175.6 × 104 mm with 178 parts on 94 nets, routed with 1,725 tracks and 203 vias.
It is built around the SN74AHCT125PWRE4, PCA9555PW and 1N4448W. Its parts include 36 capacitors, 32 diodes, 11 resistors, 6 ICs and 5 connectors. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
3
SN74AHCT125PWRE4
TSSOP-14-40℃~+85℃ 1 20uA 4 4.5V~5.5V 74AHCT 8.5ns@5V,50pF 8mA 8mA Tri-State Unidirectional TSSOP-14 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
PCA9555PW
TSSOP-24-40℃~+85℃ 1.1uA 16 2.3V~5.5V 3mA 400kHz 8 I2C、SMBus Interrupt Output Reset function、Cascade and address expansion TSSOP-24 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
1N4448W
SOD-1231 Independent 1.25V@150mA 2.5uA 2A 4ns 500mA 500mW 75V SOD-123 Switching Diodes ROHSGuangdong HottechSwitching Diodes
README
README.mdSlab PCB
The full PCB, schematics, and gerber downloads for the Slab keyboard project.
Downloads are in the releases section.
Layers
- The layer
User.3stores non-polygon versions of the silkscreen text elements that can be edited. - The layer
User.6stores a printable outline of keyswitch locations, so a keymap can be drawn on paper to test the layout.
Building
This project uses Nix for CI/CD only, to generate gerber files using KiCAD's CLI.
Sponsorship
The PCB prototypes for this version of the Slab keyboard project were kindly provided by PCBX for free!
Parts
178| Qty | Value | Footprint | References |
|---|---|---|---|
| 36 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +20 |
| 30 | MX_SK6812MINI-E | CustomFootprints:LED_MX_6028R-ROT_Custom | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +14 |
| 30 | MX_SW_HS | CustomFootprints:SW_choc_mx_combined | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +14 |
| 16 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14, TP15, TP16 |
| 11 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11 |
| 8 | VAL** | CustomFootprints:mouse-bite-2mm-slot | mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot |
| 6 | 2.2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R7, R8, R9, R10 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R6 |
| 2 | PCA9555PW | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U2, U3 |
| 2 | TRRS | Connector_Audio:Jack_3.5mm_KoreanHropartsElec_PJ-320D-4A_Horizontal | J3, J4 |
| 1 | 1N4448W | Diode_SMD:D_SOD-123 | D1 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 1 | 6.2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 1 | ADS1110A0IDBVR | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U4 |
| 1 | Buzzer | CustomFootprints:buzzer | BZ1 |
| 1 | Conn_01x04 | CustomFootprints:MagneticSlot_Right | J1 |
| 1 | Conn_01x04 | CustomFootprints:MagneticSlot_Left | J2 |
| 1 | MX_SK6812MINI-E | CustomFootprints:LED_6028R_Custom | LED31 |
| 1 | OSHW-Logo2_9.8x8mm_SilkScreen | Symbol:OSHW-Logo2_9.8x8mm_SilkScreen | OSHW |
| 1 | Q_NPN_BEC | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q3 |
| 1 | Q_PMOS_GSD | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q2 |
| 1 | RotaryEncoder | CustomFootprints:RotaryEncoder_Alps_EC12E_Vertical_H20mm_Custom | SW1 |
| 1 | SN74AHCT125PWR | CustomFootprints:SN74AHCT125PWR | U5 |
| 1 | SSD1306 | CustomFootprints:SSD1306_128x32 | J5 |
| 1 | Seeeduino Xiao rp2040 | CustomFootprints:Xiao_rp2040_AC_Reflow_Custom | U1 |
| 1 | Slider | CustomFootprints:SW_RS45111A900F_ALPS | RV1 |
| 1 | TCA4307DGKR | CustomFootprints:SOIC8_DGK_TEX | U6 |
| 1 | WEEE-Logo_5.6x8mm_SilkScreen | Symbol:WEEE-Logo_5.6x8mm_SilkScreen | WEEE |
The 162 most common of 178 parts.
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Questions
How big is the Interchange pcb right PCB?
It measures 175.6 × 104 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Interchange pcb right use?
178 parts, built around the SN74AHCT125PWRE4, PCA9555PW and 1N4448W. 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 Interchange pcb right KiCad files?
From the headblockhead/slab-pcb repository on GitHub, at the commit this page was made from: the board is interchange-pcb-right/interchange-pcb-right.kicad_pcb and its schematic interchange-connector-test/interchange-connector-test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Interchange pcb right design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).