Low profile
ryoo14·rhyn47·low-profile/pcb/low-profile/low-profile.kicad_pcb
About the Low profile PCB
Low profile is an open source RP2040/RP2350 PCB design by ryoo14, published on GitHub. It is a 2-layer board measuring 228.8 × 76.2 mm, with 123 components from 20 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVUXIQ, XC6206P332MR and SMF05CT1G. By type, the board carries 48 switches, 47 diodes, 14 capacitors, 7 resistors, 4 ICs and 1 crystal.
It belongs with the keyboards designs in this gallery.
From the project
mechanical keyboard I designed.

Main components on the Low profile
Low profile bill of materials (BOM)
123 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | W25Q16JVUXIQ | W25Q16JVUXIQ_WIN | U2 |
| 1 | XC6206P332MR | SOT-23-3 | U4 |
| 1 | SMF05CT1G | SOT-363-6_2P2X1P35_ONS | U5 |
| 1 | 12MHZ 12MHz | Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | Y2 |
| 1 | USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2 |
| 1 | C70076 fuse | Fuse_1206_3216Metric | F2 |
| 46 | SW_PUSH | Choc_v2_Hotswap_1u | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +38 |
| 1 | SW_PUSH | Choc_v2_Hotswap_2u | SW42 |
| 1 | C318884 boot | SW_Push_1P1T_XKB_TS-1187A | SW48 |
| 47 | D | Diode_TH_SMD | D1, D2, D3, D4, D5, D6, D7, D8 +39 |
| 2 | 10UF 10uF | C_0402_1005Metric | C1, C2 |
| 2 | 2.2UF 2.2uF | C_0402_1005Metric | C3, C4 |
| 9 | 100N 100n | C_0402_1005Metric | C5, C6, C7, C8, C9, C10, C11, C12 +1 |
| 1 | 100NF 100nF | C_0402_1005Metric | C17 |
| 2 | 27 | R_0402_1005Metric | R1, R2 |
| 1 | 1k | R_0402_1005Metric | R3 |
| 1 | 1KΩ | R_0402_1005Metric | R8 |
| 2 | 5.1K 5.1k | R_0402_1005Metric | R9, R10 |
| 1 | 10kΩ | R_0402_1005Metric | R11 |
Low profile design files
The KiCad project lives in the ryoo14/rhyn47 repository on GitHub; these links point at the commit this page was built from.
Low profile: common questions
What microcontroller does the Low profile use?
The Low profile is built around the RP2040, from the RP2040/RP2350 family.
How big is the Low profile PCB?
The Low profile measures 228.8 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Low profile?
123 components, from 20 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Low profile design files?
From the ryoo14/rhyn47 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Low profile design in my own project?
The repository has no license, so all rights stay with ryoo14. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Low profile without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.
More boards in rhyn47
RP2040/RP2350
Low profile with trackball
ryoo14
228.8 × 76.2 mm137 parts2LNo license3RP2040/RP2350
PCB RP2040-OnBoard
ryoo14
228.8 × 76.2 mm123 parts2LNo license3RP2040/RP2350
RHYn-OC47
ryoo14
228.8 × 76.2 mm95 parts2LNo license3Switch plate with trackball
ryoo14
237.5 × 76.5 mm47 parts2LNo license3Switch plate
ryoo14
237.5 × 76.5 mm47 parts2LNo license3
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