Eugeo

About the Eugeo PCB

Eugeo is an open source RP2040/RP2350 PCB design by konifar, published on GitHub under the MIT license. It is a 2-layer board measuring 284.9 × 75.4 mm, with 131 components from 23 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVSSIQ, MCP1700-3302E and USBLC6-2SC6. By type, the board carries 48 diodes, 15 capacitors, 9 resistors, 4 ICs, 2 switches and 2 LEDs.

It belongs with the keyboards designs in this gallery.

From the project

6x4x2 through-hole ortholinear hot-swap keyboard derived from Lumberjack

6 キー × 4 行 × 2 ブロック（48 キー）のスルーホール・オーソリニア 40% キーボード PCB です。 Lumberjack（Paul James 作、MIT License）をベースに、行を 1 段減らし、Kailh の MX 用ホットスワップソケットに対応させました。

組み上がりの画像のスイッチとキーキャップは、大きさと位置の目安として置いた簡易形状です（scripts/previewmodels.py`）。

マイコンまわりの表面実装部品（RP2040、フラッシュ、0402 のコンデンサなど）は JLCPCB に実装してもらい、それ以外はスルーホール部品のまま残しています。水晶（HC49）、セラミック・電解コンデンサ、LDO（TO-92）、アキシャル抵抗、タクトスイッチ、LED、ダイオード列が中央に並ぶ、Lumberjack の「部品を見せる」見た目を踏襲しています。

Eugeo, from the project README — From the project README

Main components on the Eugeo

RP2040 W25Q16JVSSIQ MCP1700-3302E USBLC6-2SC6

Eugeo bill of materials (BOM)

131 components, 23 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	W25Q16JVSSIQ	SOIC-8_5.3x5.3mm_P1.27mm	U2
1	MCP1700-3302E	TO-92_Inline_Wide	U3
1	USBLC6-2SC6	SOT-23-6	U4
1	12MHz	Crystal_HC49-4H_Vertical	Y1
1	USB-C	TYPE-C-31-M-12	J1
1	100mA	Fuse_Bourns_MF-RHT100	F1
48	C41430893 MX	MX_Hotswap_Kailh	MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +40
1	RESET	SW_PUSH_6mm	SW1
1	BOOT	SW_PUSH_6mm	SW2
1	RED	LED_D3.0mm	LED1
1	GREEN	LED_D3.0mm	LED2
48	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +40
2	22p	C_Disc_D3.0mm_W1.6mm_P2.50mm	C1, C2
1	10u	CP_Radial_D4.0mm_P1.50mm	C3
2	1u	C_Disc_D3.0mm_W2.0mm_P2.50mm	C6, C7
8	100N 100n	C_0402_1005Metric	C10, C11, C12, C13, C14, C15, C20, C22
2	1u	C_0402_1005Metric	C17, C18
2	27R	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R2, R3
2	5.1k	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R5, R6

Show 3 more

Qty	Part	Footprint	Refs
3	1k	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R7, R8, R10
1	10k	R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal	R9
1	1k	R_0402_1005Metric	R11

Eugeo design files

The KiCad project lives in the konifar/eugeo repository on GitHub; these links point at the commit this page was built from.

Eugeo: common questions

What microcontroller does the Eugeo use?

The Eugeo is built around the RP2040, from the RP2040/RP2350 family.

How big is the Eugeo PCB?

The Eugeo measures 284.9 × 75.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Eugeo?

131 components, from 23 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 Eugeo design files?

From the konifar/eugeo 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 Eugeo design in my own project?

Yes, under the terms of its MIT license, which konifar chose for the repository.

Can I test firmware for the Eugeo 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.