FOC

nordstream3·FOC·source/foc.kicad_pcb

FOC PCB layout, top view — open source STM32 board by nordstream3

About the FOC PCB

FOC is an open source STM32 PCB design by nordstream3, published on GitHub. It is a 4-layer board measuring 75.2 × 99.5 mm, with 238 components from 66 distinct parts.

Its main chip is the STM32F401CCU6_Blackpill, from the STM32 family. Other key parts include the TJA1051T/3/1J, BMI270, AMS1117-3.3, IRS21867S and XL1509-5.0E1. By type, the board carries 95 resistors, 75 capacitors, 19 connectors, 16 transistors, 14 ICs and 11 diodes.

It belongs with the robotics & motion and sensors designs in this gallery.

From the project

Date | Manufacturer | amount | includes | shipping & tax | price | -------- | -------- | -------- | -------- | -------- | -------- | 2024-01-17 | JLCPCB | 10 boards | All assembled excl fets and caps | YES, to EU | $241.08

An open-source motor controller board based on a JLCPCB friendly VESC6 75V/300A so-called "driverless" design with individual gate drivers for all three phases. It is powered by an STM32F405 MCU and is capable of running FOC at high power and voltages.

FOC, from the project README — From the project README

Main components on the FOC

TJA1051T/3/1J BMI270 AMS1117-3.3 IRS21867S XL1509-5.0E1 TX4130L/PW2902 MS8311 STM32F401CCU6_Blackpill STM32F405RGT6

FOC bill of materials (BOM)

238 components, 66 distinct parts.

Qty	Part	Footprint	Refs
1	TJA1051T/3/1J	SOIC-8_3.9x4.9mm_P1.27mm	U1
1	BMI270	Bosch_LGA-14_3x2.5mm_P0.5mm	U2
1	AMS1117-3.3	SOT-223-3_TabPin2	U3
3	IRS21867S	SOIC-8_3.9x4.9mm_P1.27mm	U4, U6, U7
1	XL1509-5.0E1	SOP-8_3.9x4.9mm_P1.27mm	U5
1	TX4130L/PW2902	TX4130L_ESOP-8	U8
3	MS8311	TSOT-23-5	U9, U10, U11
2	STM32F401CCU6_Blackpill	Blackpill_STM32F401CEU6	U12, U13
1	STM32F405RGT6	LQFP-64_10x10mm_P0.5mm	U14
1	AO3401A	SOT-23	Q1
3	SS8050	SOT-23	Q2, Q3, Q16
12	CRST030N10N	TO-220-3_Vertical_bend	Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11 +4
1	8MHz Crystal Resonator, X50328MSB2GI	Crystal_SMD_5032-2Pin_5.0x3.2mm	Y1
1	Conn_01x02_Male	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J1
1	Conn_01x06	JST_PH_B6B-PH-K_1x06_P2.00mm_Vertical	J2
1	communication	JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical	J3
1	on/off	JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical	J4
1	servo	JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical	J5
1	TYPE-C-31-M-12	HRO_TYPE-C-31-M-12	J6
12	SWD	PinHeader_1x01_P2.54mm_Vertical	P1, P2, P3, P4, P5, P6, P7, P8 +4

Show 46 more

Qty	Part	Footprint	Refs
1	SWD	PinHeader_1x05_P2.54mm_Vertical	P11
2	68uH	L_6.6x7.2_H5.0_CYA0650_68UH	CYA0650-68UH1, CYA0650-68UH2
2	SW_SPDT	SolderJumper-3_P1.3mm_Bridged2Bar12_Pad1.0x1.5mm	SW1, SW4
2	SW_SPST	SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm	SW2, SW3
4	US1M	D_SMA	D1, D2, D4, D7
1	1N5819	D_SOD-323	D3
1	1N4148WS	D_SOD-323	D5
1	MM1W18 1W18V zener	D_SOD-123	D6
1	SS210	D_SMA	D8
1	RED	LED_0805_2012Metric	D9
1	GREEN	LED_0805_2012Metric	D10
1	WHT	LED_0603_1608Metric	D11
1	10n	L_0805_2012Metric	L1
7	4.7n	C_0603_1608Metric	C1, C40, C41, C50, C51, C59, C60
5	100p	C_0603_1608Metric	C2, C3, C12, C18, C22
15	2.2u	C_0603_1608Metric	C4, C7, C11, C15, C16, C19, C25, C27 +7
15	100n	C_0603_1608Metric	C5, C6, C10, C21, C34, C43, C53, C61 +7
3	100u@6.3V	C_1206_3216Metric	C8, C13, C23
4	10u	CP_EIA-3216-10_Kemet-I	C9, C17, C24, C32
4	10u	C_0603_1608Metric	C14, C20, C28, C75
13	4.7u 100V	C_1210_3225Metric	C26, C36, C37, C38, C39, C46, C47, C48 +5
2	10n	C_0603_1608Metric	C30, C70
1	22u	C_0805_2012Metric	C31
3	1n	C_0603_1608Metric	C35, C44, C54
1	1u	C_0603_1608Metric	C68
2	12p	C_0603_1608Metric	C71, C73
8	2k	R_0603_1608Metric	R1, R2, R3, R11, R15, R17, R19, R28
3	100R	R_0603_1608Metric	R4, R5, R85
5	5.1k	R_0603_1608Metric	R6, R13, R26, R86, R87
5	10k	R_0603_1608Metric	R7, R10, R50, R88, R89
2	75k	R_0603_1608Metric	R8, R9
1	470k	R_0603_1608Metric	R12
12	56k @ 75V	R_0603_1608Metric	R14, R16, R18, R22, R23, R27, R38, R41 +4
1	82k @ 150V	R_0805_2012Metric	R20
2	1k8	R_0603_1608Metric	R21, R24
1	0.1R	R_1206_3216Metric	R25
3	150R	R_0603_1608Metric	R29, R47, R67
3	30k	R_0603_1608Metric	R30, R49, R68
18	10R	R_0603_1608Metric	R31, R32, R43, R44, R45, R46, R51, R52 +10
3	56k	R_0603_1608Metric	R33, R92, R93
8	1k	R_0603_1608Metric	R34, R35, R54, R55, R72, R73, R96, R97
12	4.7R	R_0603_1608Metric	R36, R37, R39, R40, R56, R57, R59, R60 +4
3	0.25mR	R_2512_6332Metric	R42, R62, R80
1	NTC 10k	R_0603_1608Metric	R48
3	6.2k	R_0603_1608Metric	R53, R71, R91
1	20k	R_0603_1608Metric	R90

FOC design files

The KiCad project lives in the nordstream3/FOC repository on GitHub; these links point at the commit this page was built from.

Layoutsource/foc.kicad_pcb
Schematicsource/foc.kicad_sch

FOC: common questions

What microcontroller does the FOC use?

The FOC is built around the STM32F401CCU6_Blackpill, from the STM32 family.

How big is the FOC PCB?

The FOC measures 75.2 × 99.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the FOC?

238 components, from 66 distinct parts. The full bill of materials is listed on this page.

Where can I download the FOC design files?

From the nordstream3/FOC repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the FOC design in my own project?

The repository has no license, so all rights stay with nordstream3. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the FOC 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.

FOC

About the FOC PCB

Main components on the FOC

FOC bill of materials (BOM)

FOC design files

FOC: common questions

What microcontroller does the FOC use?

How big is the FOC PCB?

How many components are on the FOC?

Where can I download the FOC design files?

Can I use the FOC design in my own project?

Can I test firmware for the FOC without the hardware?

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