Yak40 main

kuriki-sasa·Yak40·pcb/yak40_main/yak40_main.kicad_pcb

About the Yak40 main PCB

Yak40 main is an open source RP2040/RP2350 PCB design by kuriki-sasa, published on GitHub under the Custom license license. It is a 2-layer board measuring 285 × 93.5 mm, with 133 components from 23 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the XC6206PXXXMR and W25Q128JVS. By type, the board carries 55 switches, 46 diodes, 18 capacitors, 8 resistors, 3 ICs and 1 transistor.

It belongs with the keyboards designs in this gallery.

From the project

The Yak40 is an Alice-style Keyboard

Main components on the Yak40 main

XC6206PXXXMR RP2040 W25Q128JVS

Yak40 main bill of materials (BOM)

133 components, 23 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	XC6206PXXXMR XC6206PxxxMR	SOT-23-3	U1
1	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U2
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U3
1	BSS138	SOT-23	Q1
1	12MHZ 12MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	CONN_01X04 Conn_01x04	Molex_Pico-EZmate_78171-0004_1x04-1MP_P1.20mm_Vertical	J1
35	SW_Push	MX-Hotswap-1U	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +27
3	SW_Push	MX-Hotswap-2U	SW14, SW44, SW47
5	SW_Push	MX-Hotswap-1.25U	SW15, SW38, SW41, SW43, SW48
2	SW_Push	MX-Hotswap-1.75U	SW26, SW27
4	SW_Push	MX-Hotswap-1.5U	SW42, SW49, SW50, SW53
2	RotaryEncoder_Switch	SW_Cherry_MX_1.00u_Kailh_EC12	SW45, SW46
2	SW_Push	MX-Hotswap-2.75U	SW51, SW52
2	SW_Push	SW_Push_1P1T_XKB_TS-1187A	SW54, SW55
46	C81598 DIODE	D_SOD-123	D1, D2, D3, D4, D5, D6, D7, D8 +38
11	100N 100n	C_0402_1005Metric	C1, C2, C3, C4, C5, C6, C7, C8 +3
2	1u	C_0402_1005Metric	C9, C10
3	2.2U 2.2u	C_0402_1005Metric	C13, C14, C16
2	22P 22p	C_0402_1005Metric	C17, C18
4	1k	R_0402_1005Metric	R1, R5, R6, R7

Show 3 more

Qty	Part	Footprint	Refs
2	27	R_0402_1005Metric	R2, R3
1	10K 10k	R_0402_1005Metric	R4
1	560	R_0603_1608Metric	R8

Yak40 main design files

The KiCad project lives in the kuriki-sasa/Yak40 repository on GitHub; these links point at the commit this page was built from.

Yak40 main: common questions

What microcontroller does the Yak40 main use?

The Yak40 main is built around the RP2040, from the RP2040/RP2350 family.

How big is the Yak40 main PCB?

The Yak40 main measures 285 × 93.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Yak40 main?

133 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 Yak40 main design files?

From the kuriki-sasa/Yak40 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 Yak40 main design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Yak40 main 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.