Raii

unspecworks·raii·pcb/raii020.kicad_pcb

About the Raii PCB

Raii is an open source RP2040/RP2350 PCB design by unspecworks, published on GitHub under the SHL-2.1 license. It is a 2-layer board measuring 236.9 × 86.9 mm, with 208 components from 24 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the XC6206PXXXMR, SRV05-4, W25Q128JVS, SN74LVC1T45DRL and INA138. By type, the board carries 76 capacitors, 38 switches, 34 LEDs, 28 resistors, 12 ICs and 10 diodes.

From the project

splay sweep with ferris

If you plan to solder the hotswap sockets yourself, orient the socket so that the rectangular portion faces the center of the switch (the switch center hole). This orientation is recommended for proper case compatibility.

Raii, from the project README — From the project README

Main components on the Raii

RP2040 XC6206PXXXMR SRV05-4 W25Q128JVS SN74LVC1T45DRL INA138

Raii bill of materials (BOM)

208 components, 24 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
2	RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U1, U5
2	XC6206PXXXMR XC6206PxxxMR	SOT-23-3	U2, U7
2	SRV05-4	SOT-23-6-routable	U3, U6
2	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U4, U8
2	SN74LVC1T45DRL	SOT-563	U9, U10
2	INA138	SOT-23-5	U11, U12
2	CRYSTAL_GND24 Crystal_GND24	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1, Y2
4	USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1, J3, J4, J5
2	CONN_01X08_MOUNTINGPIN Conn_01x08_MountingPin	TE_0-1734839-8_1x08-1MP_P0.5mm_Horizontal	J6, J8
2	500MA 500mA	Fuse_1206_3216Metric	F1, F2
34	SW_Push	Chocv1_sweep	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +26
4	C231329 SW_Pusha	SW_SPST_B3U-1000P	SW35, SW36, SW37, SW38
34	CHOC_SK6812MINI-E choc_SK6812MINI-E	LED_choc_6028R	LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +26
2	LED	LED_0603_1608Metric	D1, D2
8	WS2812B	LED_WS2812B-Mini_PLCC4_3.5x3.5mm	D3, D4, D5, D6, D7, D8, D9, D10
10	1u	C_0402_1005Metric	C1, C2, C4, C6, C12, C13, C16, C20 +2
2	10U 10u	C_0603_1608Metric	C3, C15
60	100N 100n	C_0402_1005Metric	C5, C7, C8, C9, C14, C17, C18, C19 +52
4	22P 22p	C_0402_1005Metric	C10, C11, C21, C22
14	5.1K 5.1k	R_0402_1005Metric	R1, R2, R3, R8, R9, R12, R13, R14 +6

Show 4 more

Qty	Part	Footprint	Refs
4	27	R_0402_1005Metric	R4, R5, R10, R11
4	1k	R_0402_1005Metric	R6, R7, R15, R16
2	0.005	R_1206_3216Metric	R23, R26
4	75K 75k	R_0402_1005Metric	R24, R25, R27, R28

Raii design files

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

Raii: common questions

What microcontroller does the Raii use?

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

How big is the Raii PCB?

The Raii measures 236.9 × 86.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Raii?

208 components, from 24 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 Raii design files?

From the unspecworks/raii 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 Raii design in my own project?

It is published under SHL-2.1, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Raii 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.