Serendipity rp2040
dededecline·Serendipity·PCB/Solder/Kicad/Serendipity-rp2040.kicad_pcb
About the Serendipity rp2040 PCB
Serendipity rp2040 is an open source RP2040/RP2350 PCB design by dededecline, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 287.3 × 97.8 mm, with 95 components from 17 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVS, XC6206PXXXMR and PRTR5V0U2X. By type, the board carries 63 diodes, 17 capacitors, 7 resistors, 4 ICs, 2 switches and 1 crystal.
It belongs with the keyboards designs in this gallery.
From the project
Serendipity keyboard designed by @ojthetiny and me.
Photos by group buy participants can be found here!
More info can be found on the Geekhack interest check.
All files required for manufacturing are present in this repository.
All relevant information about the board should be in the Geekhack interest check.

Main components on the Serendipity rp2040
Serendipity rp2040 bill of materials (BOM)
95 components, 17 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2040 | RP2040-QFN-56 | U1 |
| 1 | W25Q128JVS | SOIC-8_5.23x5.23mm_P1.27mm | U2 |
| 1 | XC6206PXXXMR XC6206PxxxMR | SOT-23 | U3 |
| 1 | PRTR5V0U2X | SOT143B | U4 |
| 1 | 12MHZ 12MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | SM04B | Molex_Pico-EZmate_78171-0004_1x04-1MP_P1.20mm_Vertical | J1 |
| 1 | C318884 Boot | SW_SPST_TL3342 | SW1 |
| 1 | C318884 Reset | SW_SPST_TL3342 | SW2 |
| 63 | C64898 D_Small | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +55 |
| 2 | 22PF 22pF | C_0402_1005Metric | C1, C2 |
| 10 | C1525 .1u | C_0402_1005Metric | C3, C5, C6, C9, C10, C11, C12, C13 +2 |
| 4 | 1u | C_0402_1005Metric | C4, C8, C16, C17 |
| 1 | 10U 10u | C_0402_1005Metric | C7 |
| 3 | 1k | R_0402_1005Metric | R1, R4, R5 |
| 2 | 27 | R_0402_1005Metric | R2, R3 |
| 1 | 220 | R_0402_1005Metric | R8 |
| 1 | 220 R_0402_1005Metric | R_0402_1005Metric | R9 |
Serendipity rp2040 design files
The KiCad project lives in the dededecline/Serendipity repository on GitHub; these links point at the commit this page was built from.
Serendipity rp2040: common questions
What microcontroller does the Serendipity rp2040 use?
The Serendipity rp2040 is built around the RP2040, from the RP2040/RP2350 family.
How big is the Serendipity rp2040 PCB?
The Serendipity rp2040 measures 287.3 × 97.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Serendipity rp2040?
95 components, from 17 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 Serendipity rp2040 design files?
From the dededecline/Serendipity 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 Serendipity rp2040 design in my own project?
Yes, under the terms of its GPL-3.0 license, which dededecline chose for the repository.
Can I test firmware for the Serendipity rp2040 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.
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