Been fitting up autosteer to my combine, and have wired the enable line into the handle’s currently redundant autosteer button.
I’ve attached an excel file of the pin mapping for the DB25 connector. There is a common +5v rail, most buttons are push-to-make, except header ‘soft stop’ which is push-to-break, I guess for safety.
LED+ is 5v, LED- and GND are common.
There are 3 special buttons which I believe exist on later versions of the handle (units with touchscreen Cebis), function unkown. See below photo with contacts marked SA, SB and SC.
Hopefully someone finds this useful, theoretically one could add machine automation too by injecting signals to the buttons…
cmotion handle pinmap.xlsx (9.1 KB)