4 layers99.1 × 88.9 mm
2 layers80 × 80.5 mm
F1c200s proj
JoachimBose/nabby-linuxAn Allwinner F1C100s / F1C200s buildroot external tree for (among others) the hardware challenge for VUCTF-2026
- Size
- 80 × 80.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 98
- Pads
- 260
- Tracks, vias
- 582, 55
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 Feb 2026
- Updated
- 18 Jun 2026
Overview
F1c200s proj is an open-source printed circuit board by JoachimBose, from the JoachimBose/nabby-linux repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 80 × 80.5 mm with 68 parts on 98 nets, routed with 582 tracks and 55 vias.
It is built around the F1C200S, WIZ850IO and AMS1117, with the TLV70225DBVR(MS), USB-TYPE-C-020 and X322524MOB4SI among its other parts. Its parts include 23 capacitors, 15 resistors, 7 ICs, 2 diodes and 1 switch.
Main components
6
F1C200S
QFN-88-EP(10x10)QFN-88-EP(10x10) Microcontrollers (MCU/MPU/SOC) ROHSAllwinner TechMicrocontrollers (MCU/MPU/SOC)
WIZ850IO
插件,25x23mm10Mbps、100Mbps 132mA 2.97V~3.63V Short-Circuit Protection、Data encryption、Built-in signature detection、Thermal Protection、Overvoltage Protection Plugin,25x23mm Ethernet Modules ROHSWIZNETEthernet Modules
AMS1117
1.0 A Low-Dropout Fixed RegulatorAdvanced Monolithic SystemsUncategorised
TLV70225DBVR(MS)
SOT-23-5-40℃~+125℃@(Tj) 1 2.5V 230mV@(300mA) 2uA 300mA 5.5V 75dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USB-TYPE-C-020
SMD-25℃~+85℃ 1 10000 times 16P 3A 5V 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSDEALONUSB Connectors
X322524MOB4SI
SMD3225-4P-40℃~+85℃ 12pF 24MHz 50Ω Crystal Oscillator ±10ppm ±20ppm SMD3225-4P Crystals ROHSYXCCrystals
README
README.mdNabby linux
This contains the buildroot, uboot & linux configurations for a hobby project. To get started, clone a new buildroot repository outside this one. Then, from within the buildroot repository, execute:
BR2_EXTERNAL=../nabby-linux make nabby-linux_defconfigThis will import all the files from this repository. If you are new to buildroot, consider taking a look around this repository to see what you just imported.
after you compiled your buildroot, you should get a flash.bin image as described in the genimage.cfg. To flash it, put the chip in FEL-mode.
This is done by shorting chipselect of the spiflash to 3.3 volts and powering on the device, after powerup remove the short. Now you can use:
sunxi-fel -p spiflash-write 0 flash.binto flash the board while its in FEL mode.
VUCTF-2026 board
The VUCTF26 board has support for the w5500 dev boards like the w850io or the cheaper USR-ES1. There exist also the Spookystats vulnerable website and the portalctl privilege escalation challenge which can be compiled as a buildroot package. Any questions are welcome towards joa0405 on discord!
Acknowledgements
When we built the nabby board, we forked the repository from: BasicCode and we are very thankful for their contribution & GPL-2.0 license. In BasicCodes repository, they acknowledged help from the following authors:
This project is based heavily on the work of others; I would like to acknowledge these project in particular:
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100nF | PCM_JLCPCB:C_0805 | C3, C4, C5, C6, C7, C8, C9, C10, C11, C13, C14, C17, C20, C23 |
| 5 | 1uF | PCM_JLCPCB:C_0805 | C12, C15, C16, C18, C21 |
| 4 | 0Ω | PCM_JLCPCB:R_0805 | R7, R8, R9, R10 |
| 4 | 18pF | PCM_JLCPCB:C_0603 | C1, C2, C19, C22 |
| 4 | MountingHole | MountingHole:MountingHole_3.5mm | H1, H2, H3, H4 |
| 3 | 10kΩ | PCM_JLCPCB:R_0805 | R2, R11, R13 |
| 2 | 100Ω | PCM_JLCPCB:R_0805 | R14, R15 |
| 2 | 1kΩ | PCM_JLCPCB:R_0805 | R5, R12 |
| 2 | 2.2kΩ | PCM_JLCPCB:R_0805 | R1, R6 |
| 2 | 5.1kΩ | PCM_JLCPCB:R_0805 | R3, R4 |
| 2 | AMS1117 | PCM_JLCPCB:SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR | U4, U5 |
| 2 | Red | PCM_JLCPCB:D_0603 | D1, D2 |
| 1 | +1v1 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP2 |
| 1 | +2v5 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP3 |
| 1 | +3v3 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP1 |
| 1 | CS | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP4 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | DNP_J1 |
| 1 | GND | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP6 |
| 1 | LOGO | Logos:studsec | G*** |
| 1 | LOGO | Logos:Radboud_inst_pwning | G*** |
| 1 | LRADC0 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP12 |
| 1 | PD3 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP10 |
| 1 | PD4 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP11 |
| 1 | PD5 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP13 |
| 1 | PD6 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP14 |
| 1 | TLV70225DBVR | allwinners:TI-LDO-2v5 | U7 |
| 1 | TLV71311PDBVR | allwinners:TI-LDO-1v1 | U6 |
| 1 | Tactile Button, 160gf | PCM_JLCPCB:SW_TS-1088-AR02016 | S1_RST1 |
| 1 | USB-TYPE-C-020 | allwinners:USB-SMD_USB-TYPE-C-020 | USB1 |
| 1 | WIZ850io | allwinners:wiz850io-footprint | U3 |
| 1 | X322524MOB4SI | PCM_JLCPCB:OSC-SMD_4P-L3.2-W2.5-BL | X1 |
| 1 | eth_+3v3 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP5 |
| 1 | f1c200s | allwinners:QFN-88_L10.0-W10.0-P0.40-BL-EP6.75_f1c200s | U1 |
| 1 | ~ | allwinners:FLASH-8pin | U2 |
Questions
How big is the F1c200s proj PCB?
It measures 80 × 80.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the F1c200s proj use?
68 parts, built around the F1C200S, WIZ850IO, AMS1117 and TLV70225DBVR(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 F1c200s proj KiCad files?
From the JoachimBose/nabby-linux repository on GitHub, at the commit this page was made from: the board is board/vuctf-revA/kicad_files/f1c200s_proj/f1c200s_proj.kicad_pcb and its schematic board/vuctf-revA/kicad_files/f1c200s_proj/f1c200s_proj.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the F1c200s proj design in my own project?
Its repository publishes it under the GPL-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).
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