SimuCUBE pinouts and wiring

External connectors

Overview of external SimuCUBE connectors.

Legend

Color
Supply pin
Input pin
Output pin

X1 - Motor & E-stop connector

Pin number	Signal name	Usage
1	U / PH1	Motor phase 1 / Servo U
2	V / PH2	Motor phase 2 / Servo V
3	W / PH3	Motor phase 3 / Servo W
4	PH4	Motor phase 4
5	GND	Ground voltage (0 V) of the SimuCUBE, shield
6	E-Stop / STO	External stop / Safe Torque Off input pin (active high)
7	+5 V	5 V supply voltage

X16 - Motor position sensor connector

A, B, and C indicate the quadrature encoder differential signals.

Pin #	Pin name	Quadrature encoder	SinCos encoder	BiSS-C encoder
Shell	GND	Earth / 0 V	Earth / 0 V	Earth / 0 V
1	HALL_W	Hall sensor digital input W	Hall sensor digital input W
2	HALL_V	Hall sensor digital input V	Hall sensor digital input V
3	HALL_U	Hall sensor digital input U	Hall sensor digital input U
4	GND	Encoder supply ground / 0 V	Encoder supply ground / 0 V	Encoder supply ground / 0 V
5	B-	Encoder differential input B-	SinCos input B-
6	B+	Encoder differential input B+	SinCos input B+
7	A-	Encoder differential input A-	SinCos input A-
8	A+	Encoder differential input A+	SinCos input A+
9	5V_OUT	Encoder supply +5 V output	Encoder supply +5 V output	Encoder supply +5 V output
10	GND	Encoder supply ground / 0 V	Encoder supply ground / 0 V	Encoder supply ground / 0 V
11	GPI3	IONI GPI3 input		Clock- / MA-
12	GPI2	IONI GPI2 input		Clock+ / MA+
13	GPI1	IONI GPI1 input
14	C-	Encoder differential input C- (index channel)	Encoder differential input C- (index channel)	Data- / SLO-
15	C+	Encoder differential input C+ (index channel)	Encoder differential input C+ (index channel)	Data+ / SLO+

X12-upper

Pin 1 is the right-most. These are active-low with an internal 3.3 kOhm pull-up resistor.
Use with a RJ45 (8P8C) modular connector. Can be used with straight unshielded or shielded CAT3/5/5e cables (don't use crossover cables!)

Pin number	Signal name	STM32F407 pin	Usage
1	Button 1	PC11	Digital input for button
2	Button 2	PC6	Digital input for button
3	Button 3	PC7	Digital input for button
4	Button 4	PC8	Digital input for button
5	Button 5	PC9	Digital input for button
6	Button 6	PE5	Digital input for button
7	Button 7	PC10	Digital input for button
8	GND / 0 V		Ground

X12-lower

Pin 1 is the left-most. These are active-low with an internal 3.3 kOhm pull-up resistor.
Use with a RJ45 (8P8C) modular connector. Can be used with straight unshielded or shielded CAT3/5/5e cables (don't use crossover cables!)

Pin number	Signal name	STM32F407 pin	Usage
1	Button 8	PE2	Digital input for button
2	Button 9	PE3	Digital input for button
3	Button 10	PE1	Digital input for button
4	Button 11	PE0	Digital input for button
5	Button 12	PC12	Digital input for button
6	Button 13	PC13	Digital input for button
7	Button 14	PC14	Digital input for button
8	GND / 0 V		Ground

X11-upper

Pin 1 is the right-most.
Use with a RJ45 (8P8C) modular connector. Can be used with straight unshielded or shielded CAT3/5/5e cables (don't use crossover cables!) Note: These analog inputs are 3.3 V tolerant. Do not connect 5 V signals.

Pin number	Signal name	STM32F407 pin	Usage
1	ADC12_IN9	PB1	ADC input for brake pedal
2	ADC12_IN8	PB0	ADC input for throttle pedal
3	ADC12_IN14	PC5	ADC input
4	VCC_OUT		+3.3 V supply
5	ADC12_IN4	PC4	ADC input for clutch pedal
6	ADC12_IN7	PA7	ADC input
7	HX711_CLKOUT	PE12	Reserved for future use
8	GND / 0 V		Ground

X11-lower

Pin 1 is the left-most.
Use with a RJ45 (8P8C) modular connector. Can be used with straight unshielded or shielded CAT3/5/5e cables (don't use crossover cables!) Note: These analog inputs are 3.3 V tolerant. Do not connect 5 V signals.

Pin number	Signal name	STM32F407 pin	Usage
1	Button 15	PC15	Digital input for button
2	ADC123_IN13	PC3	ADC input
3	ADC123_IN3	PA3	ADC input
4	VCC_OUT		+3.3 V supply
5	ADC12_IN4 / DAC1	PA4	ADC input (/ DAC output)
6	ADC12_IN5 / DAC2	PA5	ADC input (/ DAC output)
7	ADC12_IN6	PA6	ADC input
8	GND / 0 V		Ground

USB Connectors

Connector	Usage	Notes
X3	USB connector for the STM32F4
X4	USB connector for the IONI

Basic wiring scheme

SimuCUBE basic wiring scheme. Please see the motor position sensor table for the DB15 connector pinout.

RJ45 connector wiring examples

Example of how to wire buttons and analog signals to SimuCUBE.

Easiest way to wire the rj45 connectors are through a terminal block adapter such as this. Items like this can be obtained for example from eBay (try this search).

Internal connector pinouts

SimuCUBE internal connectors.

External resistor connection

For SimuCUBE Hardware Revision 2 (1r005 printed on the PCB), it is possible to use an external regenerative braking resistor. Suitable external resistor should have resistance of 2.5 Ohm and rated power of at least 25 Watts. We recommend 50 Watts.

Please note, that if, for whatever reason, the internal resistor on the SimuCUBE has cracked, the steps listed SimuCUBE troubleshooting should be performed to analyze the health of the MOSFET transistor.

On SimuCUBE 1r005, the pinout of the external resistor connection has changed compared to the above image. Please refer to the markings on the SimuCUBE board.

Internal/External resistor in use	Pins connected in the screw terminal	Default from factory
Internal	Resistor Input and Internal Resistor connected via a jumper block	Default
External	Remove jumper and connect external resistor between Resistor Input and HV BUS Output

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