4 layers21 × 51 mm Shen, the printed circuit board in 3D

Shen

Size: 21 × 51 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 47
Nets: 74
Pads: 320
Tracks, vias: 547, 79
Pours: 5
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 19 Aug 2026
Updated: 21 Aug 2026

Overview

Shen is an open-source printed circuit board by Keyaan-07, from the Keyaan-07/shen repository on GitHub. It is a 4-layer board of 21 × 51 mm with 47 parts on 74 nets, routed with 547 tracks and 79 vias.

It is built around the RP2350A and W25Q32JVZPIQ. Its parts include 19 capacitors, 14 resistors, 4 ICs, 4 connectors and 2 switches. It belongs with the RP2350 boards of this library.

Main components

README

README.md

SHEN

Shen is a low-cost pico-sized RP2350A development board along with the raspberry pi RM2, in a small 21mmx51mm form factor, with USB-C support. It is a 4 layer stackup with 1.0mm thickness.

Check out the PCB online on KiCanvas

Features

WiFi and Bluetooth support
dual-core
4MiB Flash storage(expandable upto 16MiB)
User-LED
High efficiency sychronous buck converter
USB Boot
Curvy Traces

3d render
pcb schematic

BOM

Some parts(such as those in quantities of 50 and 100) are chosen because of the MOQ.

Designator	Function	Value	Footprint	Quantity	Price	Amount	Link
PCB	PCB		21x51	5+1	2.1+3.07	5.17	https://jlcpcb.com/
C1, C2, C4	Capacitor	4.7u	603	50	0.0048	0.24	https://robu.in/product/tcc0603x5r475m160ct-cctc-smt-ceramic-capacitors-0603-x5r-475m4-7%c2%b5f%c2%b120-rated-voltage16v-thickness0-80mm-tape/
C10, C11, C12, C13, C14, C18, C20, C5, C6, C7, C8, C9	Capacitor	100n	201	100	0.0011	0.11	https://robu.in/product/cl03a104ko3nnnc-samsang-16v-100nf-x5r-%c2%b110-0201-multilayer-ceramic-capacitors-mlcc-smd-smt-rohs/
C15, C16	Capacitor	22p	201	50	0.004	0.2	https://robu.in/product/grm0335c1h220ja01d-murata-cap-ceramic-22pf-50v-c0g-5-pad-smd-0201-125c-automotive-t-r/
C17, C19	Capacitor	10u	603	4	0.03	0.12	https://www.lcsc.com/product-detail/C7393892.html
D1	LED	LED	402	4	0.01	0.04	https://www.lcsc.com/product-detail/C7496805.html
J4	USB-C	USB_C_Receptacle_USB2.0_16P	USB_C_Receptacle_XKB_U262-16XN-4BVC11	2	0.06	0.12	https://www.lcsc.com/product-detail/C393939.html
L1	Inductor	3.3u	IND-SMD_L2.0-W1.6_AOTA-B201610S3R3-101-T	2	0.28	0.56	https://www.lcsc.com/product-detail/C42411119.html
L2	Inductor	1u	805	5	0.13	0.65	https://robu.in/product/mlp2012h1r0mt0s1-tdk-1-1a-1uh-%c2%b120-120m%cf%89-0805-inductors-smd-rohs/
R1, R2	Resistor	27	201	50	0.0038	0.19	https://robu.in/product/rc0201fr-0727rl-yageo-smd-chip-resistor-27-ohm-%C2%B1-1-50-mw-0201-0603-metric-thick-film-general-purpose/
R9	Resistor	63.4k	201	100	0.0011	0.11	https://robu.in/product/rc0201fr-0763k4l-yageo-50mw-thick-film-resistors-25v-%c2%b11-%c2%b1200ppm-%e2%84%83-63-4k%cf%89-0201-chip-resistor-surface-mount-rohs/
R11	Resistor	470	201	50	0.0038	0.19	https://robu.in/product/0201wmj0471tee-uniohm-royal-ohm-50mw-thick-film-resistors-25v-%c2%b15-%c2%b1200ppm-%e2%84%83-470%cf%89-0201-chip-resistor-surface-mount-rohs/
R10, R12	Resistor	10k	201	50	0.0038	0.19	https://robu.in/product/0201wmf1002tee-uniohm-royal-ohm-50mw-thick-film-resistors-25v-%c2%b11-%c2%b1200ppm-%e2%84%83-10k%cf%89-0201-chip-resistor-surface-mount-rohs/
R13, R14	Resistor	5.1k	201	50	0.0038	0.19	https://robu.in/product/0201wmf5101tee-uniohm-royal-ohm-50mw-thick-film-resistors-25v%c2%b11%c2%b1200ppm-%e2%84%83-5-1k%cf%89-0201-chip-resistor-surface-mount-rohs/
R3, R5, R6, R7, R8	Resistor	1K	201	50	0.0038	0.19	https://robu.in/product/0201wmf1001tee-uniohm-royal-ohm-50mw-thick-film-resistors-25v%c2%b11%c2%b1200ppm-%e2%84%83-1k%cf%89-0201-chip-resistor-surface-mount-rohs/
R4	Resistor	33	201	50	0.0038	0.19	https://robu.in/product/0201wmf330jtee-uniohm-royal-ohm-50mw-thick-film-resistors-25v%c2%b11%c2%b1200ppm-%e2%84%83-33%cf%89-0201-chip-resistor-surface-mount-rohs/
SW1, SW2	Switch	SW_Push	SW_SPST_PTS810	5	0.27	1.35	https://robu.in/product/pts810sjm250smtrlfs-ck-3-2mm-2-5mm-round-button-50ma-standing-paste-4-2mm-spst-160gf-16v-smd-tactile-switches-rohs/
U1	MCU	RP2350A	QFN-60-1EP_7x7mm_P0.4mm_EP3.4x3.4mm	3	1.14	3.42	https://robu.in/product/raspberry-pi-rp2350a-microcontroller-ic/
U2	Flash Storage	W25Q32JVZP	WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm	2	0.96	1.92	https://robu.in/product/w25q32jwzpiq-tr-winbond-elec-32mbit-spi-133mhz-wson-8-ep5x6-nor-flash-rohs/
U3	RF module	RPI-RM2	RPI_RM2	2	6.99	13.98	https://robu.in/product/raspberry-pi-radio-module-rmc20452t/
U4	Buck	TLV62084DSGx	WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm	3	0.31	0.93	https://robu.in/product/1-month-warranty-565/
Y1	Crystal	12MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	5	0.19	0.95	https://robu.in/product/ysx321sl-12mhz-10pf-10ppm-4pins-smd-smt-metal-surface-quartz-crystal-pack-of-2/

					Subtotal	31.01
					PCB Shipping	12
					Total Cost	43.01

Name

Shen is taken from the chinese letter '参' which primarily means "to participate," "to join," "to take part in,"

Category and platform

RP2350

Project files

Show this board on your page

https://pcbkit.io/boards/Keyaan-07/shen

The board's own page, for a message or a post.

Source

Repository: Keyaan-07/shen
Board file: hardware/shen.kicad_pcb
Commit: fa6e04e
Licence: Not stated

Parts

Qty	Value	Footprint	References
12	100n	Capacitor_SMD:C_0201_0603Metric	C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C18, C20
4	1k	Resistor_SMD:R_0201_0603Metric	R5, R6, R7, R8
3	4.7u	Capacitor_SMD:C_0603_1608Metric	C1, C2, C4
2	10k	Resistor_SMD:R_0201_0603Metric	R10, R12
2	10u	Capacitor_SMD:C_0603_1608Metric	C17, C19
2	22p	Capacitor_SMD:C_0201_0603Metric	C15, C16
2	27	Resistor_SMD:R_0201_0603Metric	R1, R2
2	5.1k	Resistor_SMD:R_0201_0603Metric	R13, R14
2	Conn_01x20_Pin	Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical	J1, J2
2	SW_Push	Button_Switch_SMD:SW_SPST_PTS810	SW1, SW2
1	12MHz	Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	1K	Resistor_SMD:R_0201_0603Metric	R3
1	1u	Inductor_SMD:L_0805_2012Metric	L2
1	3.3u	easyeda2kicad:IND-SMD_L2.0-W1.6_AOTA-B201610S3R3-101-T	L1
1	33	Resistor_SMD:R_0201_0603Metric	R4
1	470	Resistor_SMD:R_0201_0603Metric	R11
1	63.4k	Resistor_SMD:R_0201_0603Metric	R9
1	Conn_01x03_Pin	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J3
1	LED	LED_SMD:LED_0402_1005Metric	D1
1	RP2350A	Package_DFN_QFN:QFN-60-1EP_7x7mm_P0.4mm_EP3.4x3.4mm	U1
1	RPI-RM2	easyeda2kicad:RPI_RM2	U3
1	TLV62084DSGx	Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm	U4
1	USB_C_Receptacle_USB2.0_16P	Connector_USB:USB_C_Receptacle_XKB_U262-16XN-4BVC11	J4
1	W25Q32JVZP	Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm	U2

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Questions

How big is the Shen PCB?

It measures 21 × 51 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Shen use?

47 parts, built around the RP2350A and W25Q32JVZPIQ. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Shen KiCad files?

From the Keyaan-07/shen repository on GitHub, at the commit this page was made from: the board is hardware/shen.kicad_pcb and its schematic hardware/shen.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Shen design in my own project?

Its repository states no licence, so its author keeps all rights: ask Keyaan-07 before reusing the design.