2 layers42 × 67 mm
2 layers22.4 × 53.7 mm
Devboard
onlyth3best/devboarda project for Fallout
- Size
- 22.4 × 53.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 55
- Pads
- 191
- Tracks, vias
- 406, 54
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 May 2026
- Updated
- 25 Jun 2026
Overview
Devboard is an open-source printed circuit board by onlyth3best, from the onlyth3best/devboard repository on GitHub. It is a 2-layer board of 22.4 × 53.7 mm with 33 parts on 55 nets, routed with 406 tracks and 54 vias.
It is built around the RP2040 and W25Q128JVSIQ. Its parts include 17 capacitors, 7 resistors, 4 connectors, 3 ICs and 1 switch. It belongs with the microcontroller boards boards and the RP2040 boards of this library.
Main components
2
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
README
README.mddevboard
a project for Fallout, made with help from stasis.hackclub.com/starter-projects/devboard
/kicad has relevant KiCad files, /3dmodels has the .STEP files, /prod has gerber files~
"A development board is a specially designed printed circuit board (PCB) that integrates a microcontroller or microprocessor along with essential components such as input/output pins, power supply interfaces, USB connectors, LEDs, and often onboard sensors." (source)
Setup guide:
- the only setup needed in this sense, if I understand correctly, is using the files in this repo to upload to JLCPCB or something similar in order to receive a physical version…
Motivation:
- Since I started hardware very very recently, I wanted to try my hand at something that was a little more challenging than a regular pcb but still within the realm of KiCad work. Additionally, I find routing very fun to do, hence why I had a lot of fun with this project in certain parts.
BOM:
| Reference | Qty | Value | approx price in USD | links I found, not sure if they're all 100% correct though :heavysob: |
|---|---|---|---|---|
| C1, C10 | 2 | C_0402_1005Metric | 0.02 | links |
| C2, C3, C4, C5, C6, C7, C8, C9, C11, C12 | 10 | C_0402_1005Metric | 0.10 | links |
| C13, C14 | 2 | C_0402_1005Metric | 0.02 | links |
| C15, C16 | 2 | C_0402_1005Metric | 0.02 | links |
| J1 | 1 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | 0.10–0.25 | links |
| J2, J3 | 2 | PinHeader_1x20_P2.54mm_Vertical | 0.20–0.80 | links |
| J4 | 1 | R_0402_1005Metric | 0.01 | links |
| R1, R2 | 2 | R_0402_1005Metric | 0.02 | links |
| R3, R4 | 2 | R_0402_1005Metric | 0.02 | links |
| R5, R7 | 2 | R_0402_1005Metric | 0.02 | links |
| R6 | 1 | R_0402_1005Metric | 0.01 | links |
| SW1 | 1 | SW_Push_SPST_NO_Alps_SKRK | 0.10–0.50 | links |
| U1 | 1 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | 1.00–2.00 | links |
| U3 | 1 | SOIC-8_5.3x5.3mm_P1.27mm | 0.30–0.80 | links |
| U4 | 1 | TO-92_Inline | 0.05–0.30 | links |
| Y1 | 1 | Crystal_SMD_3225-4Pin_3.2x2.5mm | 0.05–0.20 | links |
| total BOM price ~ 2.95, with JLCPCB cost it's around 5.95 USD |
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C6, C7, C8, C9, C11, C12, C17 |
| 2 | 1K | Resistor_SMD:R_0402_1005Metric | R5, R7 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C10 |
| 2 | 33pF | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | Conn_01x20_Pin | Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_Vertical | J2, J3 |
| 2 | R | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C14 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 10uF | Capacitor_SMD:C_0402_1005Metric | C13 |
| 1 | 12 MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | MCP1700x-330xxTO | Package_TO_SOT_THT:TO-92_Inline | U4 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
Questions
How big is the Devboard PCB?
It measures 22.4 × 53.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Devboard use?
33 parts, built around the RP2040 and W25Q128JVSIQ. 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 Devboard KiCad files?
From the onlyth3best/devboard repository on GitHub, at the commit this page was made from: the board is kicad/devboard.kicad_pcb and its schematic kicad/devboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Devboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask onlyth3best before reusing the design.
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