4 layers

Moco rc1

Q: What parts does the Moco rc1 use?

89 parts, built around the STSPIN32F0A, TCAN4550-Q1, FDMD8240LET40 and MBR180S1. 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.

Q: Where can I download the Moco rc1 KiCad files?

From the ziteh/moco repository on GitHub, at the commit this page was made from: the board is hardware/moco-rc1/moco-rc1.kicad_pcb and its schematic hardware/moco-bkd8316/moco-bkd8316.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Q: Can I use the Moco rc1 design in my own project?

Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

ziteh/moco24

PMSM/BLDC motor controller/driver PCBs

Open in PCBKit

Copper layers: 4
Thickness: 1.6 mm
Parts: 89
Nets: 82
Pads: 380
Tracks, vias: 0, 6
Routed: Not yet
KiCad: KiCad 8.0 (file 20240108)
Created: 7 Dec 2022
Updated: 18 May 2024

Overview

Moco rc1 is an open-source printed circuit board by ziteh, from the ziteh/moco repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board with 89 parts on 82 nets.

It is built around the STSPIN32F0A, TCAN4550-Q1 and FDMD8240LET40, with the MBR180S1 among its other parts. Its parts include 30 resistors, 27 capacitors, 7 connectors, 4 diodes and 3 ICs. It belongs with the robots and motor control boards and the STM32 boards of this library.

Main components

README

hardware/moco-rd321/readme.md

moco-RD321

6.7V~35V, 12A
3-Phase low-side current sensing. OP-Amp Gain=6.74, Shunt resistor=20mΩ
Overcurrent detection. Ith=30A @ OC_COMPth=500mV
Input voltage sensing
32x32mm square PCB, 4xM2 mounting holes
STSPIN32F0A 3-phase gate driver with embdded MCU SiP
- STM32F031C6 48MHz, 4KB SRAM, 32KB Flash
- 600mA sink/source gate drivers, integrated bootstrap diodes
- 12V LDO and 3.3V buck
SiZ250DT Dual N-MOSFET, 60V, 38A, 3.3x3.3mm
MA702 magnetic encoder, SPI
2x04 2.54mm Pin header for debug, JST SM03B-SRSS-TB 1x03 for Serial and I2C

Pinmap

Description	Analog IC	STM32	STM32 Func
High-side U	HS1	PA8	TIM1_CH1
High-side V	HS2	PA9	TIM1_CH2
High-side W	HS3	PA10	TIM1_CH3
Low-side U	LS1	PB13	TIM1_CH1N
Low-side V	LS2	PB14	TIM1_CH2N
Low-side W	LS3	PB15	TIM1_CH3N
OC threshold select 1	OC_TH_STBY1	PF7	Push-pull output
OC threshold select 2	OC_TH_STBY2	PF6	Push-pull output
OC protection selection	OC_SEL	PA11	Push-pull output
OC comparator output	OC_COMP_INT	PB12	TIM1_BKIN
OC comparator output	OC_COMP_INT2	PA12	TIM1_ETR
Current sense U	OP3O	PA0	ADC_IN0
Current sense V	OP2O	PA1	ADC_IN1
Current sense W	OP1O	PB1	ADC_IN9
VM sense	--	PA4	ADC_IN4
SPI SCLK	--	PA5	SPI1
SPI MISO	--	PA6	SPI1
SPI MOSI	--	PA7	SPI1
SPI nCS MA702	--	PA15
USART Tx	--	PA2	USART1
USART Rx	--	PA3	USART1
I2C SCL	--	PB6	I2C1
I2C SDA	--	PB7	I2C1
SWDIO	--	PA13
SWCLK	--	PA14
Connected to GND	--	BOOT0
User LED (Red)	--	PF0	Active HIGH
12V indicator LED (Blue)	--	--

Unused GPIOs inside the package should be config to output low: PB0, PB2, PB3, PB4, PB5, PB8, PB9, PB10, PB11, PC13, PC14, PC15.

OC_TH_STBY1 and OC_TH_STBY2 should be HIGH for 500mV OC threshold.

For analog IC, the GPIO input config without pull-up or -down is always allowed.

PCB

Jumper

If input voltage (i.e. VM)<15V then close SB1 to connect VM pin and VREG12 pin.

Board Characteristics

Copper layer count: 4
Board overall dimensions: 32 x 32 mm
Min track/spacing: 0.13 mm / 0.13 mm
Min hole diameter: 0.3 mm
Castellated pads: No
Edge card connectors: No
Plated board edge: No
1oz copper

SPI

MA702 encoder SPI:

Mode:
- 0 (CPOL=0, CPHA=0) or 1 (CPOL=1, CPHA=1)
- Data sampled on first edge
16-bit data frame
MSB first
nCS pin active low
25MHz clock

MCU

STSPIN32x	F0	F0A	F0B
Operating voltage	8~45V	6.7~45V	6.7~45V
OP-Amps	4	3	1
GPIOs	15	16	20
BOOT0 pin	--	Yes	Yes
3FG decoding logic for Hall sensors	Yes	--	--
Comparator	OCP	OCP and current control	OCP and current control
Package	QFN 7x7mm 1EP	QFN 7x7mm 1EP	QFN 7x7mm 1EP

Solved: STSPIN32F0 vs STSPIN32F0A vs STSPIN32F0B - STMicroelectronics Community

Reference

qwertpas/O32controller: Miniature closed-loop controller for brushless DC motors
STspin32G4 support - hardware support - SimpleFOC Community
ST AN5397 "Current Sensing in motion control applications"
ST AN4999 "STSPIN32F0/F0A/F0B overcurrent protection"
ST DB3364 "STEVAL-SPIN3202: STSPIN32F0A advanced 3-phase BLDC driver with embedded STM32 MCU single shunt evaluation board"
ST DB4049 "EVALKIT-ROBOT-1: Compact reference design kit for robotics and automation based on STSPIN32F0A"
ST DB3798 "STEVAL-ESC002V1: Electronic Speed Controller reference design based on STSPIN32F0A"
TI SLUA887 "Bootstrap Circuitry Selection for Half-Bridge Configurations"
Diodes DN1156 "Gate Drivers in BLDC Motors"

Parts

Qty	Value	Footprint	References
6	1.78k	Resistor_SMD:R_0402_1005Metric	R4, R5, R18, R19, R25, R26
6	10R	Resistor_SMD:R_0402_1005Metric	R1, R2, R15, R16, R22, R23
6	24k	Resistor_SMD:R_0402_1005Metric	R3, R6, R17, R20, R24, R27
6	NetTie_2	NetTie:NetTie-2_SMD_Pad0.5mm	NT1, NT2, NT3, NT4, NT5, NT6
5	100nF	Capacitor_SMD:C_0402_1005Metric	C8, C10, C11, C15, C16
4	10k	Resistor_SMD:R_0402_1005Metric	R8, R9, R14, R30
3	100nF/50V	Capacitor_SMD:C_0402_1005Metric	C1, C23, C26
3	10uF/50V	Capacitor_SMD:C_0805_2012Metric	C3, C20, C21
3	12k	Resistor_SMD:R_0402_1005Metric	R7, R21, R28
3	1nF	Capacitor_SMD:C_0402_1005Metric	C2, C24, C27
3	20mΩ/3W	Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder	RS1, RS2, RS3
3	220nF/50V	Capacitor_SMD:C_0402_1005Metric	C19, C22, C25
3	FDMD8240LET40	moco:PQFN-12	Q1, Q2, Q3
3	MountingHole	MountingHole:MountingHole_2.2mm_M2_ISO7380	H1, H2, H3
2	10nF	Capacitor_SMD:C_0402_1005Metric	C4, C14
2	10uF	Capacitor_SMD:C_0402_1005Metric	C9, C13
2	12pF	Capacitor_SMD:C_0402_1005Metric	C5, C6
2	4.7k	Resistor_SMD:R_0402_1005Metric	R12, R13
2	60R	Resistor_SMD:R_0402_1005Metric	R10, R11
2	TVS	Diode_SMD:D_SOD-323_HandSoldering	D2, D3
1	100nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C18
1	18uH	Inductor_SMD:L_Neosid_SMS-ME3015	L1
1	300nF	Capacitor_SMD:C_0402_1005Metric	C12
1	4.7nF	Capacitor_SMD:C_0402_1005Metric	C17
1	40MHz	Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	47uF	Capacitor_SMD:C_0805_2012Metric	C7
1	68k	Resistor_SMD:R_0402_1005Metric	R29
1	AS5600	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U3
1	CAN	Connector_JST:JST_GH_SM03B-GHS-TB_1x03-1MP_P1.25mm_Horizontal	J7
1	Conn_02x03_Odd_Even	Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical	J4
1	LED	LED_SMD:LED_0603_1608Metric	D4
1	MBR180S1	Diode_SMD:D_SOD-123F	D1
1	OUT_U	moco:Conn_1x1_3.7_1.5	J1
1	OUT_V	moco:Conn_1x1_3.7_1.5	J2
1	OUT_W	moco:Conn_1x1_3.7_1.5	J3
1	RESET	Button_Switch_SMD:SW_SPST_B3U-1000P	SW1
1	STSPIN32F0A	moco:VFQFN-48_7x7_EP2.8mm_Pitch0.5mm	U1
1	TCAN4550	moco:VQFN-20_3.5_3.5_0.5p	U2
1	VM+	moco:Conn_1x1_3.7_1.5	J5
1	VM-	moco:Conn_1x1_3.7_1.5	J6

Questions

What parts does the Moco rc1 use?

89 parts, built around the STSPIN32F0A, TCAN4550-Q1, FDMD8240LET40 and MBR180S1. 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 Moco rc1 KiCad files?

From the ziteh/moco repository on GitHub, at the commit this page was made from: the board is hardware/moco-rc1/moco-rc1.kicad_pcb and its schematic hardware/moco-bkd8316/moco-bkd8316.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Moco rc1 design in my own project?

Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Robots and motor control STM32

Topics

bldc-driver hardware kicad oshw arduino-foc stm32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/ziteh-moco-moco-rc1" title="Moco rc1 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/ziteh-moco-moco-rc1.jpg" alt="Moco rc1" width="1200" height="900">

A picture that opens the board, for a README

[![Moco rc1](https://pcbkit.io/embed/boards/ziteh-moco-moco-rc1.jpg?size=s)](https://pcbkit.io/boards/ziteh-moco-moco-rc1)

Source

Repository: ziteh/moco
Board file: hardware/moco-rc1/moco-rc1.kicad_pcb
Commit: e0caae5
Licence: CERN-OHL-P-2.0

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