Dev board
About the Dev board
Dev board is an open source RP2040/RP2350 PCB design by sammaclennan, published on GitHub. It is a 4-layer board measuring 310 × 125 mm, with 197 components from 100 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the TPS62237DRYR and AT25SF128A-SHB-T. By type, the board carries 84 switches, 84 diodes, 14 capacitors, 7 resistors, 3 ICs and 3 connectors.
It belongs with the dev boards & breakouts and keyboards designs in this gallery.
From the project
An 84-key mechanical keyboard
Main components on the Dev board
Dev board bill of materials (BOM)
197 components, 100 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | TPS62237DRYR | TPS62237DRYR | U2 |
| 1 | AT25SF128A-SHB-T | SOIC127P798X216-8N | U3 |
| 1 | ECS-2033-120-BN | ECS2033120BN | Y1 |
| 1 | USB4110-GF-A | USB4110GFA | J1 |
| 1 | USB_BOOT | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | TC2030-CTX | TC2030MCPNL10 | P1 |
| 1 | ESC | SW_Cherry_MX_1.00u_PCB | SW1 |
| 1 | F1 | SW_Cherry_MX_1.00u_PCB | SW2 |
| 1 | F2 | SW_Cherry_MX_1.00u_PCB | SW3 |
| 1 | F3 | SW_Cherry_MX_1.00u_PCB | SW4 |
| 1 | F4 | SW_Cherry_MX_1.00u_PCB | SW5 |
| 1 | F5 | SW_Cherry_MX_1.00u_PCB | SW6 |
| 1 | F6 | SW_Cherry_MX_1.00u_PCB | SW7 |
| 1 | F7 | SW_Cherry_MX_1.00u_PCB | SW8 |
| 1 | F8 | SW_Cherry_MX_1.00u_PCB | SW9 |
| 1 | F9 | SW_Cherry_MX_1.00u_PCB | SW10 |
| 1 | F10 | SW_Cherry_MX_1.00u_PCB | SW11 |
| 1 | F11 | SW_Cherry_MX_1.00u_PCB | SW12 |
| 1 | F12 | SW_Cherry_MX_1.00u_PCB | SW13 |
Show 80 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PRTSC | SW_Cherry_MX_1.00u_PCB | SW14 |
| 1 | PAUSE | SW_Cherry_MX_1.00u_PCB | SW15 |
| 1 | DEL | SW_Cherry_MX_1.00u_PCB | SW16 |
| 1 | GRAVE | SW_Cherry_MX_1.00u_PCB | SW17 |
| 1 | 1 | SW_Cherry_MX_1.00u_PCB | SW18 |
| 1 | 2 | SW_Cherry_MX_1.00u_PCB | SW19 |
| 1 | 3 | SW_Cherry_MX_1.00u_PCB | SW20 |
| 1 | 4 | SW_Cherry_MX_1.00u_PCB | SW21 |
| 1 | 5 | SW_Cherry_MX_1.00u_PCB | SW22 |
| 1 | 6 | SW_Cherry_MX_1.00u_PCB | SW23 |
| 1 | 7 | SW_Cherry_MX_1.00u_PCB | SW24 |
| 1 | 8 | SW_Cherry_MX_1.00u_PCB | SW25 |
| 1 | 9 | SW_Cherry_MX_1.00u_PCB | SW26 |
| 1 | 0 | SW_Cherry_MX_1.00u_PCB | SW27 |
| 1 | DASH | SW_Cherry_MX_1.00u_PCB | SW28 |
| 1 | EQUALS | SW_Cherry_MX_1.00u_PCB | SW29 |
| 1 | BKSPACE | SW_Cherry_MX_2.00u_PCB | SW30 |
| 1 | HOME | SW_Cherry_MX_1.00u_PCB | SW31 |
| 1 | TAB | SW_Cherry_MX_1.50u_PCB | SW32 |
| 1 | Q | SW_Cherry_MX_1.00u_PCB | SW33 |
| 1 | W | SW_Cherry_MX_1.00u_PCB | SW34 |
| 1 | E | SW_Cherry_MX_1.00u_PCB | SW35 |
| 1 | R | SW_Cherry_MX_1.00u_PCB | SW36 |
| 1 | T | SW_Cherry_MX_1.00u_PCB | SW37 |
| 1 | Y | SW_Cherry_MX_1.00u_PCB | SW38 |
| 1 | U | SW_Cherry_MX_1.00u_PCB | SW39 |
| 1 | I | SW_Cherry_MX_1.00u_PCB | SW40 |
| 1 | O | SW_Cherry_MX_1.00u_PCB | SW41 |
| 1 | P | SW_Cherry_MX_1.00u_PCB | SW42 |
| 1 | LSQBRKT | SW_Cherry_MX_1.00u_PCB | SW43 |
| 1 | RSQBRKT | SW_Cherry_MX_1.00u_PCB | SW44 |
| 1 | BACKSLASH | SW_Cherry_MX_1.50u_PCB | SW45 |
| 1 | PGUP | SW_Cherry_MX_1.00u_PCB | SW46 |
| 1 | CAPSLK | SW_Cherry_MX_1.75u_PCB | SW47 |
| 1 | A | SW_Cherry_MX_1.00u_PCB | SW48 |
| 1 | S | SW_Cherry_MX_1.00u_PCB | SW49 |
| 1 | D | SW_Cherry_MX_1.00u_PCB | SW50 |
| 1 | F | SW_Cherry_MX_1.00u_PCB | SW51 |
| 1 | G | SW_Cherry_MX_1.00u_PCB | SW52 |
| 1 | H | SW_Cherry_MX_1.00u_PCB | SW53 |
| 1 | J | SW_Cherry_MX_1.00u_PCB | SW54 |
| 1 | K | SW_Cherry_MX_1.00u_PCB | SW55 |
| 1 | L | SW_Cherry_MX_1.00u_PCB | SW56 |
| 1 | SEMICOLON | SW_Cherry_MX_1.00u_PCB | SW57 |
| 1 | QUOTE | SW_Cherry_MX_1.00u_PCB | SW58 |
| 1 | RETURN | SW_Cherry_MX_2.25u_PCB | SW59 |
| 1 | PGDN | SW_Cherry_MX_1.00u_PCB | SW60 |
| 1 | LSHIFT | SW_Cherry_MX_2.25u_PCB | SW61 |
| 1 | Z | SW_Cherry_MX_1.00u_PCB | SW62 |
| 1 | X | SW_Cherry_MX_1.00u_PCB | SW63 |
| 1 | C | SW_Cherry_MX_1.00u_PCB | SW64 |
| 1 | V | SW_Cherry_MX_1.00u_PCB | SW65 |
| 1 | B | SW_Cherry_MX_1.00u_PCB | SW66 |
| 1 | N | SW_Cherry_MX_1.00u_PCB | SW67 |
| 1 | M | SW_Cherry_MX_1.00u_PCB | SW68 |
| 1 | COMMA | SW_Cherry_MX_1.00u_PCB | SW69 |
| 1 | PERIOD | SW_Cherry_MX_1.00u_PCB | SW70 |
| 1 | FWDSLASH | SW_Cherry_MX_1.00u_PCB | SW71 |
| 1 | RSHIFT | SW_Cherry_MX_1.75u_PCB | SW72 |
| 1 | UP | SW_Cherry_MX_1.00u_PCB | SW73 |
| 1 | END | SW_Cherry_MX_1.00u_PCB | SW74 |
| 1 | LCTRL | SW_Cherry_MX_1.25u_PCB | SW75 |
| 1 | LWIN | SW_Cherry_MX_1.25u_PCB | SW76 |
| 1 | LALT | SW_Cherry_MX_1.25u_PCB | SW77 |
| 1 | SPACE | SW_Cherry_MX_6.25u_PCB | SW78 |
| 1 | RALT | SW_Cherry_MX_1.00u_PCB | SW79 |
| 1 | FN | SW_Cherry_MX_1.00u_PCB | SW80 |
| 1 | RCTRL | SW_Cherry_MX_1.00u_PCB | SW81 |
| 1 | LEFT | SW_Cherry_MX_1.00u_PCB | SW82 |
| 1 | DOWN | SW_Cherry_MX_1.00u_PCB | SW83 |
| 1 | RIGHT | SW_Cherry_MX_1.00u_PCB | SW84 |
| 84 | D | D_SOD-323F | D1, D2, D3, D4, D5, D6, D7, D8 +76 |
| 1 | 1uH | L_1008_2520Metric | L1 |
| 2 | 4.7uF | C_0402_1005Metric | C1, C2 |
| 10 | 100nF | C_0402_1005Metric | C3, C4, C5, C6, C7, C8, C9, C11 +2 |
| 2 | 1uF | C_0402_1005Metric | C10, C13 |
| 1 | 10k | R_0402_1005Metric | R5 |
| 2 | 1k | R_0402_1005Metric | R6, R8 |
| 2 | 5.1k | R_0402_1005Metric | R7, R9 |
| 2 | 27 | R_0402_1005Metric | R10, R11 |
Dev board design files
The KiCad project lives in the sammaclennan/dev-board repository on GitHub; these links point at the commit this page was built from.
- Layoutdevboard.kicad_pcb
- Schematicdevboard.kicad_sch
Dev board: common questions
What microcontroller does the Dev board use?
The Dev board is built around the RP2040, from the RP2040/RP2350 family.
How big is the Dev board?
The Dev board measures 310 × 125 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Dev board?
197 components, from 100 distinct parts. The full bill of materials is listed on this page.
Where can I download the Dev board design files?
From the sammaclennan/dev-board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Dev board design in my own project?
The repository has no license, so all rights stay with sammaclennan. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Dev board 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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