2 layers65 × 30 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
36 parts1kGPL-3.0
2 layers19.5 × 22.6 mm
RP2350-Micro Devboard
0x62b/RP2354-Micro-Devboard2A small RP2354 based devboard
- Size
- 19.5 × 22.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 55
- Pads
- 168
- Tracks, vias
- 335, 22
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Apr 2026
- Updated
- 26 Apr 2026
Overview
RP2350-Micro Devboard is an open-source printed circuit board by 0x62b, from the 0x62b/RP2354-Micro-Devboard repository on GitHub. It is a 2-layer board of 19.5 × 22.6 mm with 36 parts on 55 nets, routed with 335 tracks and 22 vias.
Its parts include 17 capacitors, 6 resistors, 3 connectors, 2 ICs and 2 switches. It belongs with the microcontroller boards boards and the RP2350 boards of this library.
README
README.mdRP2354-Micro-Devboard
A devboard based on the RP2354 in a small form factor. It is roughly the size of a Seeed Xiao RP2350, and it was going to be pin compatible, before I realised what a messy routing job that was going to be, so I switched the layout for something more logical.
This is probably just going to be used for some small boards that need an RP2350 but that I don't want to directly build the MCU into, without having to go acquire a Xiao, supermini, or something like that.
*many of the files are named as RP2350 because that is what I was using before
The board is compatible with any firmware written for the Pi Pico/RP2350, as long as they don't use the omitted GPIO pins anyway...
Note! The BOM.csv in project root is the LCSC exported BOM with links, while the BOM list in production/ is the original
KiCad exported BOM
Features
- Based on RP2354A with 2MB onboard flash (small flash is a compromise for small size)
- 2 layer PCB (this killed my sanity)
- 10 GPIO outputs
- USB Micro B power/data connection
- a really REALLY messy PCB routing job (it passed DRC tho so I guess thats something...)
Zine page (yes the render is outdated)
Finished schematic (I'm using the 2350A footprint because they're pin compatible)
Finished PCB
PCB render
JLCPCB order
Extra cost comes from lead-free HASL
LCSC order
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8, C10 |
| 4 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C9, C15, C16, C17 |
| 3 | 1kΩ | Resistor_SMD:R_0402_1005Metric | R1, R2, R5 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C13, C14 |
| 2 | 27Ω | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | Conn_01x07 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J2, J3 |
| 2 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP2, TP5 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 1V1 | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | 3.3uH | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 33Ω | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | MCP1700x-330xxTT | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | RP2350_60QFN | RP2350_60QFN_minimal:RP2350-QFN-60-1EP_7x7_P0.4mm_EP3.4x3.4mm_ThermalVias | U2 |
| 1 | USB_B_Micro | RP2350_60QFN_minimal:USB_Micro-B_Amphenol_10103594-0001LF_Horizontal_modified | J4 |
| 1 | VBUS | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
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Questions
How big is the RP2350-Micro Devboard PCB?
It measures 19.5 × 22.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RP2350-Micro Devboard use?
36 parts. 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 RP2350-Micro Devboard KiCad files?
From the 0x62b/RP2354-Micro-Devboard repository on GitHub, at the commit this page was made from: the board is pcb/RP2350-Micro-Devboard.kicad_pcb and its schematic pcb/RP2350-Micro-Devboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RP2350-Micro Devboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask 0x62b before reusing the design.