Simucube Wireless Wheel 2

Wireless Wheel 2 Module
Configurable inputs
Digital	96
Analog	4
Antenna
Type	External (not included)
Connector	U.FL
Frequency (Center/Band)	2.4 GHz
Gain (max)	2.14 dBi
Electrical specifications
Rechargeable version:
Charger input voltage/current	5.0V / 450mA
Supported battery chemistry	Li-Ion or Li-Po
Battery voltage	2.5V – 4.2V
Non-rechargeable version:
Input voltage	2.0V – 3.8V

The Simucube Wireless Wheel 2 Module is an upgraded version of the Simucube Wireless wheel module. The new module offers more digital inputs, 4 analog axes, and in-build battery charger, and a voltage regulator.

Digital inputs

Wireless Wheel 2 Module has a total of 98 digital input pins in which 96 inputs are fully configurable by wheel manufacturers. 2 pins are reserved for shifter paddles. Shifter paddles are only mandatory devices, and the rest of the pins can be used as needed. Paddles are mandatory because they are used to connect and disconnect the wheel from Simucube. Each configurable IO pin can be used multiple times with different device types. Most of the input devices can also be configured with enable pins. These enable pins can be used to multiplex encoders. For example, one encoder can be configured as 12 different encoders with a rotary switch controlling which encoder is used at the time.

Possible digital input device types:
Button: Regular button, game controller holds signal high if pressed.
Encoder: Each detent is shown as a pulse. Pulsed game controller signal depends on turning direction.
Rotary switch: Maximum of 12 positions. Changing switch position will pulse corresponding output. The rotary switch can also be configured as buttons if the pulsing output is not needed or wanted.

Analog inputs

SLEEP pin with transistors can be used to turn external devices on and off

The wireless module offers AVCC output for analog devices. Output in AVCC is pulsed for lower power consumption and output is on only when the ADC module is sampling inputs. Output pulses are 2ms long and frequency is 100Hz, this means that AVCC is on 20% of the time. 2ms pulses work great with potentiometers, but Hall-effect sensors might not work with pulsed AVCC if Hall-sensor power-on time is too long. One option to provide VCC for Hall-sensor is to power it from Wireless Wheel 2 VDD pin and use MOSFETs connected to SLEEP pin so Hall-sensor can be powered off while Wireless Wheel 2 isn’t connected. SLEEP pin is high when Wireless Wheel 2 is connected to Simucube.

Battery connections

Wireless Wheel 2 Module has multiple VIN, GND, BATT, and SW_IN pins. The module will work when using only one of each, but it is recommended to connect pins together in the wheel circuit board. Pins should be tied together to ensure a reliable connection with the M.2 connector in case of mechanical shock or shaking.

Rechargeable version

Rechargeable example

Wireless Wheel 2 Module for rechargeable batteries has an in-built charger circuit and DC-DC converter to regulate battery voltage to 3.0V. The charger is connected to VIN and should be provided with 5.0V +- 5% with a minimum of 450mA for charging. BATT pins are charger output and the battery should be connected between these and GND. SW_IN is unregulated voltage input for the Wireless Wheel 2 Module and will provide voltage to the in-built DC-DC converter. The power switch can be connected between SW_IN pins and a positive battery terminal. installing power switch between SW_IN and BATT enable charging when the wheel is turned off.

Non-rechargeable version

Non-rechargeable example

Wireless Wheel 2 Module version for non-rechargeable batteries does not have a charger nor DC-DC converter. Due to a non-existing DC-DC converter, the VDD output is not regulated, and voltage will be the same as battery voltage. Even though it is possible to connect batteries straight to SW_IN pins to power this version, it is recommended to connect battery positive lead to VIN instead, since it has reverse polarity protection. VIN is internally connected to BATT pins in a non-rechargeable version. If a power switch is needed, it can be installed on battery leads or between BATT and SW_IN pins. If the power switch is not connected between mentioned pins, BATT pins should be connected to WS_IN pins to ensure power for the module.

Pinout

Wireless Wheel 2 Module uses M.2 connectors to fit all the I/O pins in a compact, low-profile packet. All LED pins include a 220 Ohm current limiter resistor.

Left M.2 connector

Bottom side			Top side
Function	Signal	Pin		Signal	Function
GND	GND	66	67	AVCC	3.0 V OUTPUT to analog circuitry Max. 100 mA including VDD current.
GND	GND	64	65	AN0	ADC CH0 INPUT 0 .. 3.0 V voltage range
GND	GND	62	63	AN1	ADC CH1 INPUT 0 .. 3.0 V voltage range
GND	GND	60	61	AN2	ADC CH2 INPUT 0 .. 3.0 V voltage range
Input	BTN64	58	59	AN3	ADC CH3 INPUT 0 .. 3.0 V voltage range
Input	BTN63	56	57	BTN1	Input
Input	BTN62	54	55	BTN2	Input
Input	BTN61	52	53	BTN3	Input
Input	BTN60	50	51	BTN4	Input
Input	BTN89	48	49	BTN5	Input
Input	BTN58	46	47	BTN6	Input
Input	BTN57	44	45	BTN7	Input
Input	BTN56	42	43	BTN8	Input
Input	BTN55	40	41	BTN9	Input
Input	BTN54	38	39	BTN10	Input
Input	BTN53	36	37	BTN11	Input
Input	BTN52	34	35	BTN12	Input
Input	BTN51	32	33	BTN13	Input
Input	BTN50	30	31	BTN14	Input
Input	BTN49	28	29	BTN15	Input
GND	GND	26	27	BTN16	Input
Input	BTN80	24	25	GND	GND
Input	BTN78	22	23	BTN79	Input
Input	BTN76	20	21	BTN77	Input
Input	BTN74	18	19	BTN75	Input
Input	BTN72	16	17	BTN73	Input
Input	BTN70	14	15	BTN71	Input
Input	BTN68	12	13	BTN69	Input
Input	BTN66	10	11	BTN67	Input
Input	BTN17	8	9	BTN65	Input
Input	BTN19	6	7	BTN18	Input
Input	BTN32	4	5	LED1	3.0 V status LED OUTPUT through 220 Ohm series resistor
Input	BTN30	2	3	BTN20	Input
-	-	-	1	BTN31	Input

Right M.2 connector

Bottom side			Top side
Function	Signal	Pin		Signal	Function
Input	BTN28	66	67	BTN29	Input
Input	BTN26	64	65	BTN27	Input
Input	BTN22	62	63	BTN25	Input
Input	BTN24	60	61	BTN21	Input
Do not connect	-	58	59	BTN23	Input
Do not connect	-	56	57	-	Do not connect
Input	BTN96	54	55	-	Do not connect
Input	BTN95	52	53	-	Do not connect
Input	BTN94	50	51	-	Do not connect
Input	BTN93	48	49	-	Do not connect
Input	BTN92	46	47	SLEEP	BP2 module sleep status Active LOW (BP2 sleeps)
Input	BTN91	44	45	TX	LEUART TX signal OUTPUT
Input	BTN90	42	43	RX	LEUART RX signal INPUT
Input	BTN89	40	41	LED2	2nd indicator LED OUTPUT 3.0 V through 220 Ohm resistor
Input	BTN88	38	39	PADDLE1	Paddle input 1 (left)
Input	BTN87	36	37	PADDLE2	Paddle input 2 (right)
Input	BTN86	34	35	GND	GND
Input	BTN85	32	33	VDD	+3.0 V OUTPUT Max. 100 mA including AVCC current.
Input	BTN84	30	31	BTN33	Input
Input	BTN83	28	29	BTN34	Input
Input	BTN82	26	27	BTN35	Input
Input	BTN81	24	25	BTN36	Input
GND	GND	22	23	BTN37	Input
GND	GND	20	21	BTN38	Input
LED indicator for battery charging Connect LED Anode to BATT	LED_CHG	18	19	BTN39	Input
SWITCH_IN operating voltage input	SW_IN	16	17	BTN40	Input
	SW_IN	14	15	BTN41	Input
LiPO/Ion/battery positive terminal	BATT	12	13	BTN42	Input
	BATT	10	11	BTN43	Input
GND	GND	8	9	BTN44	Input
	GND	6	7	BTN45	Input
Voltage INPUT terminal 5.0 V ± 5 %	VIN	4	5	BTN46	Input
	VIN	2	3	BTN47	Input
-	-	-	1	BTN48	Input

Resources

Eagle library

Eagle library of Wireless Wheel 2 Module

3D-model

Wireless Wheel 2 Module 3D model file (.step)

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