Hi @wiremonkey, dual homing was tested during the SLB Beta, but has not yet been tested on the final released boards or been re-introduced in firmware. This was meant to be a feature instriduce by now but there has been many other requests for SLB that since launch we’ve just been trying to address the most requested items first as we slowly make our way down the list. I’m in the process of trying to work with Terje the maintainer of grblHAL to get the SLB into his firmware web builder but it’ll take some time. The good news is that it’s worked before and the hardware supports it, so it should be something that anyone can upgrade to once it’s ready to go 
2 Likes