CANchecked CFE18

CANbus Switch Modul for e.g. Motorsport steering wheels

CANchecked add-on module, which has 18 ports

Mit den CANchecked Displays haben Sie alle relevanten Werte im Blick.

CFE18 stands for "Can Bus Function Extension" or colloquially also "Can Switch Board" - why is this module needed?
Can bus connections in the vehicle sometimes pose great challenges for our customers. Especially in motorsport applications, when electronics have to be accommodated in the steering wheel and information from adjustment buttons (trimpots) or push buttons is then to be transmitted via Can Bus.
CANchecked now offers a small additional module with 18 connections: 9 for push buttons and 9 for analog inputs (0-5V signal). A voltage converter to ensure connection to a 12V vehicle board network is also already integrated.

With only 29x27mm, the board is kept very compact and can be placed anywhere. The pin spacing is 2.54mm - for the power supply, for safety reasons, 3.81mm. Holes for fastening are made, which can be used as a screw connection..

One use case would be a motorsport steering wheel. In the picture 4 you can see the approximate size, whereby the steering wheel hub is 50mm in diameter. With just 4 connections via a spiral cable, a wide variety of inputs can be transmitted via Can Bus. Switches and trimpots (adjustment buttons) can be connected to the CFE18. But sensors such as oil pressure, fuel pressure, boost pressure, exhaust back pressure and integration in a separate housing would also be conceivable.

18 - Can Bus Termination
A solder jumper is attached to the circuit board. f you close this, the Can Bus termination with 120 ohms is active. By default the solder jumper is OPEN .

Anschlüsse:

• 12V / GND (up) Voltage supply 6-22V (verpolungssicher)
• A0-A8 9 analog input (0-5V)
• D0-D8 9 digital input(max 5V) (internal Pullup 20-50K)
• 5V/SGND Voltage supply analog sensors or sensor ground
• CANL/CANH Can Bus connection (Can Low, Can High)
• CAN 2.0 A/B - 125, 250, 500, 1000 kbps
• AUX1-3* Low side outputs 0.5A maximum - *from board v0.8
• RX/TX/DTR/GND optional: for possible updates (additional hardware required)

- CFE18 connector / Default Can Bus Stream -
The input data is queried and transmitted every 50ms (100Hz - variable from 1Hz to approx. 300Hz - depending on the smoothing ). The data is transmitted as "unsigned big endian". As soon as 12V and ground are connected, the green status LED on the front lights up and the Can Bus data is transmitted. Can Bus ID: 0x700 (Base Data CAN ID – änderbar)

Byte	0	1	2	3	4	5	6	7
Base ID	AIN0 0-1023		AIN1 0-1023		AIN2 0-1023		AIN3 0-1023
Base ID +1	AIN4 0-1023		AIN5 0-1023		AIN6 0-1023		AIN7 0-1023
Base ID +2	AIN8 0-1023		bit masked DIN0-7	bit masked DOUT1-3			internalTemp	version