2 layers51 × 22.7 mm
Rp2040-literal bare minimum
brunostjohn/CarveraPCBGuide
how to make PCBs with a carvera air & some thoughts + prayers
28 parts19
2 layers12 × 40 mm
VoidKey
sanoojes/VoidKeyA Security key with RP2350A
- Size
- 12 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 55
- Pads
- 160
- Tracks, vias
- 318, 37
- Pours
- 86
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Jan 2026
- Updated
- 4 Jan 2026
Overview
VoidKey is an open-source printed circuit board by sanoojes, from the sanoojes/VoidKey repository on GitHub. It is a 2-layer board of 12 × 40 mm with 36 parts on 55 nets, routed with 318 tracks and 37 vias.
It is built around the W25Q16JVZPIQ and MCP1700T-3302E/TT(MS). Its parts include 19 capacitors, 7 resistors, 3 ICs, 2 connectors and 2 switches. It belongs with the RP2350 boards of this library.
Main components
2
W25Q16JVZPIQ
WSON-8-EP(5x6)-40℃~+85℃ 100,000 cycles 10ms 10uA 120ms@(32KB) 133MHz 16Mbit 2.7V~3.6V 20 Years 400us Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection、Power lock protection SPI WSON-8-EP(5x6) NOR FLASH ROHSWinbond ElecNOR FLASH
MCP1700T-3302E/TT(MS)
SOT-23-40℃~+85℃@(Ta) 1 120uVrms 180mV@(300mA) 2uA 3.3V 300mA 5.5V 80dB@(100Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-23 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdVoidKey
A Security key with RP2350A
PCB
Images will be attached soon
Firmware
A fork of the pico-fido for this project pico-fido-voidkey
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8, C10, C12, C17, C18 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R4, R5, R7 |
| 3 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C11, C19, C20 |
| 2 | 10u | Capacitor_SMD:C_0402_1005Metric | C13, C14 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 3.3u | lib:L_pol_2016 | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | Conn_USB_A_Plain | PCM_fab:Conn_USB_A_Plain | P1 |
| 1 | DEBUG | PCM_fab:PinHeader_01x03_P2.54mm_Vertical_THT_D1mm | J1 |
| 1 | MCP1700T-3302E-TT | PCM_Package_TO_SOT_SMD_AKL:SOT-23 | U4 |
| 1 | RP2350_60QFN | lib:RP2350-QFN-60-1EP_7x7_P0.4mm_EP3.4x3.4mm_ThermalVias | U1 |
| 1 | W25Q16JVZPIQ | Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | U3 |
| 1 | WS2812_2020 | PCM_marbastlib-various:LED_WS2812_2020 | LED1 |
Questions
How big is the VoidKey PCB?
It measures 12 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the VoidKey use?
36 parts, built around the W25Q16JVZPIQ and MCP1700T-3302E/TT(MS). 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 VoidKey KiCad files?
From the sanoojes/VoidKey repository on GitHub, at the commit this page was made from: the board is kicad/VoidKey.kicad_pcb and its schematic kicad/VoidKey.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the VoidKey design in my own project?
Its repository states no licence, so its author keeps all rights: ask sanoojes before reusing the design.
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