Claas CMotion handle help

Hello, i have a claas 660 arion which hasnt got any GPS fitted and is not steer ready. I have started to make my own system and would like to use the button on the joystick to activate the gps. Does abybody know how i would connected to the button as i cant seem to get into the stick itself or is there a plug i can use that wouldnt be connected on a non steer ready model. I would like to avoid using canbus if possible.

Many thanks
Joel

Curious, why would you want to avoid CANBUS?

Depends what’s inside the joystick if not I guess - but bear in mind any switching you might incur, might upset the controller that could end up diagnosing it as a fault?

You can connect to the button but you have to open the armrest and splice into the button signal wire and run wire out of armrest. The signal switches between about 1.5v released and 3.something volt pressed. I have used a voltage switch relay module set at 1.8v for this purpose. Picture attached of the wire spliced into.

If 3.3v when pressed, can one of the extra A-inputs on the AIO board be used?

No reason why it couldn’t be used. Would need to double check the voltage as I think it may be above 3.3.

Maybe use a diode so that the button can only “pull” down on the teensy (diode pointed away from Teensy). Use an analog input with pinmode “input_pullup” to pull up to 3.3v when pressing the button and when not pressing you should get 1.5v + diode drop.

It says on the pinout that it needs to connect to ground, when you say that you are using a relay is the 3.something volts opening a relay with the main power connectors both connected to ground? If not im not sure i understand what you mean. I will open the armrest tomorrow to try and find this cable. Hopefully my wires are the same and i can connect to the same purple cable.

Many thanks
Joel

Id like to avoid canbus as i dont understand it at all, i wouldnt know where to start and if i can just connect a wire that is a bit more my style as its much simpler. If you know how to do it via canbus and could explain it simply that could be the eaiser option as opening the armrest itself is a bit of a puzzle!

Many thanks
Joel

I put a video up on how to work out canbus codes. It’s pretty simple, check the CANBUS section