I’m well on the way now to implementing MS2-Extra support. Still a lot of coding to do but it’s starting to take shape and, hopefully, will be running sometime in the next week or so.
I’ve had a couple of queries regarding MS3 support. I’ve not got the necessary hardware to test it but it SHOULD work OK. The iPhone, however, cannot be hooked directly to the Megasquirt 3’s built in USB port, it will still need to use a Serial to WiFi adaptor as described on the hardware page.