Barebones

nzevh·barebones·hardware/motherboard/barebones.kicad_pcb

About the Barebones PCB

Barebones is an open source STM32 PCB design by nzevh, published on GitHub under the CERN-OHL-S-2.0 license. It is a 8-layer board measuring 354 × 150 mm, with 1026 components from 191 distinct parts.

Its main chip is the STM32U083MCT6, from the STM32 family. Other key parts include the RK3588, W25Q16JVUXIQ_TR, TLV75533PDBVR, TPS56837RPAR and 1N5819WT. By type, the board carries 671 capacitors, 204 resistors, 50 ICs, 26 inductors, 23 connectors and 18 diodes.

It belongs with the power & battery and dev boards & breakouts designs in this gallery.

From the project

fully open source laptop based on the RK3588 Soc

barebones is a work-in-progress open-source laptop motherboard project built around the Rockchip RK3588 platform. It is designed as a high-performance, modular laptop mainboard with dual DDR4 memory slots, hierarchical subsystem schematics, and a full laptop-oriented power, I/O, audio, and control architecture.

barebones is intended to be a complete laptop motherboard platform rather than a small breakout or development board. The design is organized into multiple schematic sheets that separate major functional blocks such as power delivery, memory, high-speed I/O, embedded control, audio…

Barebones bill of materials (BOM)

1026 components, 191 distinct parts.

Qty	Part	Footprint	Refs
1	RK3588	BGA1088C65P34X34_2300X2300X204N	U1
1	W25Q16JVUXIQ_TR	IC_W25Q16JVUXIQ_TR	U2
1	TLV75533PDBVR	SOT95P280X145-5N	U3
1	TPS56837RPAR	CONV_TPS56837RPAR	U4
1	1N5819WT HXY MOSFET(华轩阳电子)	SOD-523_L1.2-W0.8-LS1.6-RD	U9
2	PCA9306DCTR	SOP65P400X130-8N	U11, U20
1	RK806-1 Rockchip(瑞芯微)	QFN-68_L7.0-W7.0-P0.35-BL-EP5.5	U12
1	STM32U083MCT6 ST(意法半导体)	TQFP-80_L12.0-W12.0-P0.50-LS14.0-BL	U13
1	BQ25731RSNR	QFN40P400X400X80-33N	U14
3	TPS22919DCK	SOT-363_SC-70-6	U15, U16, U17
2	RK860-2 Rockchip(瑞芯微)	WLCSP-20_L2.0-W1.6-R5-C4-P0.40-TL	U18, U19
1	DF40C-30DP-0.4V51	HIROSE_DF40C-30DP-0.4V-58	U21
1	RK860-3 Rockchip(瑞芯微)	WLCSP-20_L2.0-W1.6-R5-C4-P0.40-TL	U22
1	KLMCG4JETD-B041	BGA-153_L13.0-W11.5-P0.50-TL_KLM8G1GEME-B041	U23
1	TPS56C215RNNR	QFN50P350X350X100-18N	U24
1	TPS61170DRVR	SON65P200X200X80-7N	U26
1	TPS61160ADRVT	SON65P200X200X80-7N	U28
5	TPS62933DRLR	SOTFL50P160X60-8N	U29, U39, U40, U42, U44
1	W25Q256JWEIQ Winbond(华邦)	WSON-8_L8.0-W6.0-P1.27-TL-EP-1	U30
1	PCF85063ATL/1,118	10-DFN_2.6X2.6_	U31

Show 171 more

Qty	Part	Footprint	Refs
2	K4UCE3Q4AA-MGCL SAMSUNG(三星半导体)	BGA-200_L15.0-W10.0_K4F8E304HB-MGCJ	U32, U33
1	ES8316 Everest-semi(顺芯)	QFN-32_L4.0-W4.0-P0.40-BL-EP2.7	U34
1	TS3A227EYFFR	BGA16N40P4X4_175X175X62N	U35
1	STM32F411CEU6	QFN50P700X700X60-49N	U36
1	TPA2012D2RTJT	QFN50P400X400X80-21N270X270	U37
1	TPS65988DHRSHR	IC_TPS65987DDHRSHR	U38
2	TPD4E004DRYR	PSON50P145X100X60-6N	U41, U54
1	9FGV0641AKILFT RENESAS(瑞萨)/IDT	WQFN-40_L5.0-W5.0-P0.40-TL-EP3.5	U43
1	TPS54628DDAR	VREG_LM5017MR_NOPB	U53
7	2N7002KW	SOT323	U65, U67, U68, U69, U70, U74, U77
1	DRV5032DUDBZR TI(德州仪器)	SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR	U71
1	USB5744_2G	QFN40P700X700X100-57N	U79
2	TPS2557DRBR	SON65P300X300X100-9N	U85, U86
3	BSS138	SOT-23	Q1, Q3, Q5
4	CSD25402Q3A	TRANS_CSD25402Q3A	Q2, Q7, Q8, Q9
1	MMBT3904	SOT-23	Q4
4	CSD18543Q3A	VSON-8_3.3x3.3mm_P0.65mm_NexFET	Q11, Q12, Q13, Q14
1	C3E-24.000-12-3030-X-R	XTAL_C3E-24.000-12-3030-X-R	Y1
3	C2E-25.000-10-1530-X-R	XTAL_C2E-25.000-10-1530-X-R	Y3, Y7, Y8
2	ABS07-32.768KHZ-T	XTAL_ABS07-32.768KHZ-T	Y5, Y6
1	DF40C-34DP-0.4V_58_	HIROSE_DF40C-34DP-0.4V_58_	J1
2	1-2199119-5	TE_1-2199119-5	J2, J3
2	SJ3-350114B	SAMESKY_SJ3-350114B	J4, J8
2	SM04B-SRSS-TB_LF__SN_	JST_SM04B-SRSS-TB_LF__SN_	J5, J16
1	2199119-4	TE_2199119-4	J6
1	5034801200	CON_5034801200_MOL	J7
1	20455-040E-76	IPEX_20455-040E-76	J9
2	54-00007	TENSILITY_54-00007	J10, J11
1	10067847-001RLF	AMPHENOL_10067847-001RLF	J12
1	BM04B-SRSS-TB_LF__SN_	JST_BM04B-SRSS-TB_LF__SN_	J13
1	S2B-PH-K-S_LF__SN_	JST_S2B-PH-K-S_LF__SN_	J15
1	2200981671	CONN_2200980000-SD_16_MOL	J17
1	G45AA1912100B1EU	AMPHENOL_G45AA1912100B1EU	J18
1	SM06B-SRSS-TB_LF__SN_	JST_SM06B-SRSS-TB_LF__SN_	J19
1	5055671571	CONN_505567_15_MOL	J20
2	10137062-00021LF	AMPHENOL_10137062-00021LF	J23, J26
1	FH12-30S-0.5SH_55_	HIROSE_FH12-30S-0.5SH_55_	J24
1	F33X-1AAJ1-E8951	AMPHENOL_F33X-1AAJ1-E8951	J25
1	BK-912-G	BAT_BK-912-G	BT1
3	BLM18PG121SZ1D	BEADC1608X95N	FL1, FL2, FL3
6	TL3342F160QG	SW_TL3342F160QG	S1, S2, S3, S4, S5, S6
1	1571983-4	SW_1571983-4	S7
1	1-1571983-0	SW_1-1571983-0	S8
2	EC05E1220401 ALPSALPINE(阿尔卑斯阿尔派)	SW-SMD_EC05E1220401	SW1, SW2
1	TPS7A7002DDAR	VREG_TPS7A7002DDAR	VR1
1	SK6812SIDE-A 欧思科光电	LED-SMD_4P-L4.0-W1.6-L	LED1
2	SMAJ15CA	D_SMA	D1, D17
2	SMAJ22A	D_SMA	D2, D12
1	B0530W-7-F	SOD3715X145N	D3
1	TPD1E05U06DPYR	DIO_TPD1E05U06DPYR	D5
6	TPD4E02B04DQAR	DIO_TPD4E02B04DQAR	D6, D7, D8, D9, D14, D15
3	TPD6E05U06RVZR	SON50P135X350X55-14N	D10, D11, D19
2	SD103AWS-E3-08	SOD2713X115N	D13, D20
1	BAT54CW	SOT-323_SC-70	D16
4	FDSD0420-H-2R2M=P3	IND_FDSD0420-H-2R2M=P3	L1, L2, L4, L6
2	DFEG7030D-4R7M=P3	IND_DFEG7030D-4R7M=P3	L3, L20
1	XFL4015-471MEC Coilcraft(线艺)	IND-SMD_L4.0-W4.0_XFL4020-102MEB	L5
1	FDSD0420-H-2R2M=P3	IND_XAL6030-332MEC	L7
1	XAL7030-152MEC	INDDFN750X750X310-2N	L8
7	DFE252010F-R22M=P2 muRata(村田)	IND-SMD_L2.5-W2.0_MHCD252012B-2R2M-A8L	L9, L10, L12, L13, L16, L18, L19
6	DFE201610E-R47M=P2	INDC2016X100N	L11, L21, L22, L23, L24, L25
1	LQH5BPN100MT0L	IND_LQH5BPN100MT0L	L14
1	LQH32PH220MNCL	IND_LQH32PH220MNCL	L15
1	XAL7030-472MEB	IND_XAL7030-472MEB	L17
1	XAL6030-332MEC	IND_XAL6030-332MEC	L26
66	10uF	C_0603_1608Metric	C1, C7, C18, C26, C114, C115, C122, C123 +58
56	1uF	C_0402_1005Metric	C2, C3, C8, C9, C21, C22, C23, C24 +48
188	0.1uF	C_0201_0603Metric	C4, C5, C6, C10, C11, C12, C15, C16 +180
4	4.7uF	C_0603_1608Metric	C19, C27, C55, C69
2	18pF	C_0201_0603Metric	C36, C49
22	1uF	C_0201_0603Metric	C48, C137, C140, C158, C159, C161, C163, C221 +14
1	10pF	C_0201_0603Metric	C70
21	4.7uF	C_0402_1005Metric	C72, C74, C86, C87, C148, C155, C186, C194 +13
4	2.2uF	C_0402_1005Metric	C75, C243, C272, C372
61	22uF	C_0805_2012Metric	C89, C90, C91, C92, C164, C177, C178, C187 +53
2	4.7uF	C_0201_0603Metric	C141, C419
2	100pF	C_0402_1005Metric	C176, C204
14	10uF	C_0805_2012Metric	C179, C202, C275, C276, C324, C337, C468, C503 +6
20	2.2uF	C_0603_1608Metric	C182, C191, C197, C205, C206, C210, C217, C230 +12
7	1uF	C_0603_1608Metric	C211, C229, C263, C278, C279, C619, C620
1	10nF	C_0603_1608Metric	C227
1	1nF	C_0603_1608Metric	C228
4	33nF	C_0402_1005Metric	C231, C232, C591, C686
2	10nF	C_0402_1005Metric	C235, C266
2	47nF	C_0603_1608Metric	C237, C238
2	100pF	C_0201_0603Metric	C240, C241
1	1uF	C_0805_2012Metric	C242
2	47uF	C_0805_2012Metric	C249, C335
7	0.1uF	C_0805_2012Metric	C251, C254, C343, C512, C513, C609, C612
1	47nF	C_0402_1005Metric	C273
2	47uF	C_0603_1608Metric	C285, C289
22	22uF	C_0603_1608Metric	C286, C287, C288, C292, C293, C296, C297, C298 +14
67	0.1uF	C_0402_1005Metric	C314, C321, C322, C323, C345, C347, C352, C373 +59
6	10uF	C_1210_3225Metric	C325, C326, C328, C329, C341, C342
1	47nF	C_0201_0603Metric	C344
1	150pF	C_0402_1005Metric	C346
4	22uF	C_1210_3225Metric	C348, C349, C676, C678
1	56pF	C_0402_1005Metric	C363
10	47uF	C_1210_3225Metric	C366, C369, C371, C374, C375, C381, C384, C385 +2
1	0.047uF	C_0402_1005Metric	C386
2	12.5pF	C_0402_1005Metric	C395, C397
2	10uF	C_0201_0603Metric	C396, C466
7	0.1uF	C_0603_1608Metric	C411, C504, C518, C588, C607, C685, C690
4	100nF	C_0402_1005Metric	C432, C433, C436, C440
8	220nF	C_0402_1005Metric	C442, C444, C445, C446, C447, C448, C450, C451
4	12pF	C_0402_1005Metric	C463, C464, C595, C596
8	220nF	C_0201_0603Metric	C531, C532, C533, C534, C535, C536, C537, C538
4	10uF	C_0402_1005Metric	C552, C568, C699, C700
2	20pF	C_0201_0603Metric	C555, C622
1	4.7nF	C_0201_0603Metric	C556
1	680pF	C_0201_0603Metric	C557
1	15pF	C_0201_0603Metric	C558
1	33pF	C_0201_0603Metric	C559
4	220pF	C_0402_1005Metric	C561, C562, C565, C566
2	12pF	C_0201_0603Metric	C602, C623
4	10uF	C_1206_3216Metric	C604, C617, C679, C688
3	33nF	C_0201_0603Metric	C674, C694, C702
4	22uF	C_1206_3216Metric	C680, C681, C684, C687
1	150uF	CP_EIA-7343-20_Kemet-V	C752
37	10k	R_0201_0603Metric	R5, R26, R36, R38, R39, R40, R42, R43 +29
7	22R	R_0201_0603Metric	R6, R8, R9, R10, R59, R222, R223
1	510k	R_0402_1005Metric	R7
12	200R	R_0201_0603Metric	R11, R12, R13, R14, R15, R16, R19, R20 +4
9	4.7k	R_0201_0603Metric	R17, R18, R82, R229, R230, R231, R232, R233 +1
4	100k	R_0201_0603Metric	R22, R23, R141, R187
2	120k	R_0201_0603Metric	R24, R25
4	8.2k	R_0201_0603Metric	R28, R29, R31, R35
5	100	R_0402_1005Metric	R32, R33, R49, R50, R60
1	110k	R_0402_1005Metric	R34
15	100k	R_0402_1005Metric	R37, R52, R58, R64, R143, R165, R168, R174 +7
2	200k	R_0402_1005Metric	R41, R44
2	CSRN2512FK10L0	RESC6331X70N	R51, R68
1	150k	R_0402_1005Metric	R53
2	4.99	R_0402_1005Metric	R54, R56
1	191k	R_0201_0603Metric	R57
30	10k	R_0402_1005Metric	R61, R62, R120, R121, R122, R145, R147, R152 +22
4	47k	R_0201_0603Metric	R63, R194, R195, R199
2	10R	R_0201_0603Metric	R65, R178
1	30k	R_0201_0603Metric	R66
1	380k	R_0201_0603Metric	R67
1	220k	R_0201_0603Metric	R72
2	10R	R_0402_1005Metric	R73, R74
1	40.2k	R_0201_0603Metric	R75
2	15k	R_0201_0603Metric	R76, R175
3	100R	R_0402_1005Metric	R92, R93, R94
1	22R	R_0402_1005Metric	R118
4	2.2k	R_0201_0603Metric	R131, R136, R148, R149
4	4.7k	C_0201_0603Metric	R132, R156, R157, R158
4	240R	R_0201_0603Metric	R133, R135, R138, R140
4	1k	R_0201_0603Metric	R134, R137, R139, R142
1	43k	R_0402_1005Metric	R144
1	56k	R_0402_1005Metric	R146
1	2.2R	R_0402_1005Metric	R163
3	31.3k	R_0402_1005Metric	R167, R172, R252
1	12k	R_0201_0603Metric	R173
2	1M	R_0805_2012Metric	R184, R185
1	30.1k	R_0201_0603Metric	R190
1	49.9k	R_0402_1005Metric	R191
1	49.9k	R_0201_0603Metric	R197
1	1.2k	R_0402_1005Metric	R198
2	27k	R_0201_0603Metric	R200, R201
2	57.6k	R_0402_1005Metric	R203, R213
8	499R	R_0201_0603Metric	R204, R205, R206, R207, R208, R209, R210, R211
1	1k	R_0402_1005Metric	R212
1	3.74k	R_0402_1005Metric	R218
1	140k	R_0402_1005Metric	R225
1	1.5k	R_0402_1005Metric	R226
1	52.3k	R_0402_1005Metric	R235
2	20k	R_0402_1005Metric	R256, R258
2	1.8k	R_0201_0603Metric	R262, R263
1	200k	R_0201_0603Metric	R264

Barebones design files

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

Layouthardware/motherboard/barebones.kicad_pcb
Schematichardware/motherboard/barebones.kicad_sch

Barebones: common questions

What microcontroller does the Barebones use?

The Barebones is built around the STM32U083MCT6, from the STM32 family.

How big is the Barebones PCB?

The Barebones measures 354 × 150 mm, has 8 copper layers and is 1.6 mm thick.

How many components are on the Barebones?

1026 components, from 191 distinct parts. The full bill of materials is listed on this page.

Where can I download the Barebones design files?

From the nzevh/barebones repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Barebones design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which nzevh chose for the repository.

Can I test firmware for the Barebones without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

More boards in barebones

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Barebones

About the Barebones PCB

Main components on the Barebones

Barebones bill of materials (BOM)

Barebones design files

Barebones: common questions

What microcontroller does the Barebones use?

How big is the Barebones PCB?

How many components are on the Barebones?

Where can I download the Barebones design files?

Can I use the Barebones design in my own project?

Can I test firmware for the Barebones without the hardware?

More boards in barebones

Battery

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