2 layers261.5 × 131.6 mm
Quacken zero
Nuclear-Squid/Quacken
Libre, ergonomic, polymorphic: a single PCB for many possible layouts.
87 parts38GPL-3.0
2 layers262 × 113.9 mm
Quacken
Nuclear-Squid/Quacken38Libre, ergonomic, polymorphic: a single PCB for many possible layouts.
- Size
- 262 × 113.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 108
- Nets
- 95
- Pads
- 565
- Tracks, vias
- 1,281, 202
- Pours
- 395
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Jun 2025
- Updated
- 4 Jun 2026
Overview
Quacken is an open-source printed circuit board by Nuclear-Squid, from the Nuclear-Squid/Quacken repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 262 × 113.9 mm with 108 parts on 95 nets, routed with 1,281 tracks and 202 vias.
It is built around the RP2040, PCAL6524HEAZ and W25Q16JVUXIQ, with the SRV05-4 and TS-1088R-02026 among its other parts. Its parts include 42 switches, 19 capacitors, 13 resistors, 6 ICs 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)
PCAL6524HEAZ
HUQFN-32-EP(5x5)-40℃~+85℃ 1MHz 24 25mA 2uA 4 800mV~3.6V、1.65V~5.5V I2C、SMBus Interrupt Output Push-Pull、Open-drain Reset function、Cascade and address expansion、Input anti-jitter、Built-in LED driver、IO level configurable HUQFN-32-EP(5x5) I/O Expanders ROHSNXP SemiconductorsI/O Expanders
W25Q16JVUXIQ
USON-8-EP(2x3)-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI USON-8-EP(2x3) NOR FLASH ROHSWinbond ElecNOR FLASH
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
TS-1088R-02026
SMD,4x3mm100,000 cycles 12V 2.6N 2.93mm 2mm 3.9mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHSXUNPUTactile Switches
README
README.mdQuacken
Libre, ergonomic, polymorphic: a single PCB for many possible layouts.
3×6, 3×5, hummingbird, and everything in between.
Roadmap
-
Quacken Zero: unibody
- first batch with a Pro Micro slot, to experiment geometry and design choices
- next batches with an onboard nRF52840 (Bluetooth LE) and the updated geometry
-
Quacken Flex: unibody by default, splittable by choice
- onboard RP2040 (left) and I/O expander (right)
- splittable in two (I²C communication over a TRRS cable)
- splittable outer columns
- hotswap sockets
- optional Circle Trackpad
- optional rotary encoders
-
Marie-Quackenette: split and wireless variant of the Quacken Flex.
Parts
108| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | ~ | keyboard:Choc_Switch | SW3, SW10, SW11, SW12, SW13, SW14, SW15, SW18, SW19, SW20, SW21, SW22, SW27, SW28, SW29, SW30 +14 |
| 12 | 100n | Capacitor_SMD:C_0402_1005Metric | C3, C4, C7, C9, C10, C12, C13, C14, C16, C18, C19, C20 |
| 12 | ~ | keyboard:Choc_Switch_Median | SW1, SW2, SW5, SW6, SW16, SW17, SW23, SW24, SW25, SW26, SW38, SW39 |
| 10 | MountingHole | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopOnly | H3, H4, H5, H6, H7, H8, H9, H10, H11, H12 |
| 5 | 1u | Capacitor_SMD:C_0402_1005Metric | C5, C6, C8, C15, C17 |
| 4 | 2.2k | Resistor_SMD:R_0402_1005Metric | R2, R7, R8, R11 |
| 4 | RotaryEncoder_Switch | keyboard:rotary_encoder | ROT1, ROT2, ROT3, ROT4 |
| 2 | clipboard:66bca75f-7d73-44ee-ad14-b083a89b6a44 | , | |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R1, R5 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R9, R10 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R12, R13 |
| 2 | AudioJack4 | keyboard:TRRS-PJ-320A-dual | TRRS1, TRRS2 |
| 2 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U5, U6 |
| 1 | clipboard:7a87b8cf-9aff-4f5e-af7c-10d41d278be2 | ||
| 1 | clipboard:6155f7aa-606b-4f9a-9a74-7124771ae546 | ||
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 12MHz 10pF | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | CIRQUE_Left | keyboard:Cirque | J1 |
| 1 | CIRQUE_Right | keyboard:Cirque | J2 |
| 1 | PCAL6524HEAZ | keyboard:PCAL6524HEHZ | U3 |
| 1 | Qwiic | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J4 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | TS-1088R-02026 | Button_Switch_SMD:SW_SPST_TS-1088-xR020 | SMDSW1 |
| 1 | TentingPuckLeft | keyboard:TentingPuck | H1 |
| 1 | TentingPuckRight | keyboard:TentingPuck | H2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J3 |
| 1 | W25Q16JVUX | Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | U1 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23-3 | U4 |
More from Nuclear-Squid/Quacken
1Similar boards
- 2 layers139.5 × 92 mm
- 6 layers147.3 × 95.9 mm
Zoutwachter measurement
Multiflexmeter/PZLD-Zoutwachter
Automated groundwater conductivity readout based CN0359
335 parts - 6 layers143.4 × 126.2 mm
Esl gsu
tiancilliers/esl-gsu
Satellite interfacing kit in development by the ESL (Electronic Systems Lab)
741 parts - 2 layers271.3 × 120 mm
- 4 layers277.2 × 107.5 mm
Katia
ikajdan/katia
A split keyboard with 6 by 3 column staggered keys and 3 thumb keys, based on the Crkbrd design
230 parts33CERN-OHL-P-2.0 - 2 layers278.7 × 107.5 mm
- 2 layers
Inett 60 PCB
TeddyDo915K/Nett-Sixty-PCB
This is a work in progress to create a replacement PCB for one of my favorites keyboard that I own.
158 parts1MIT - 2 layers277.2 × 107.5 mm
Questions
How big is the Quacken PCB?
It measures 262 × 113.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Quacken use?
108 parts, built around the RP2040, PCAL6524HEAZ, W25Q16JVUXIQ and SRV05-4. 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 Quacken KiCad files?
From the Nuclear-Squid/Quacken repository on GitHub, at the commit this page was made from: the board is flex/quacken.kicad_pcb and its schematic flex/quacken.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Quacken design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).